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GOLUB CAPITAL BDC, Inc. – ‘10-K’ for 9/30/23 – ‘EX-101.LAB’

On: Monday, 11/20/23, at 4:07pm ET · For: 9/30/23 · Accession #: 1476765-23-77 · File #: 814-00794

Previous ‘10-K’: ‘10-K’ on 11/21/22 for 9/30/22 · Latest ‘10-K’: This Filing · 32 References:

  As Of               Filer                 Filing    For·On·As Docs:Size

11/20/23  GOLUB CAPITAL BDC, Inc.           10-K        9/30/23   99:74M

Annual Report — Form 10-K

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML  27.56M 
 2: EX-4.7      Instrument Defining the Rights of Security Holders  HTML     52K 
 3: EX-14.1     Code of Ethics                                      HTML     64K 
 4: EX-14.2     Code of Ethics                                      HTML     95K 
 5: EX-21.1     Subsidiaries List                                   HTML     29K 
 6: EX-23.1     Consent of Expert or Counsel                        HTML     27K 
10: EX-97.1     Clawback Policy re: Recovery of Erroneously         HTML     43K 
                Awarded Compensation                                             
11: EX-99.1     Miscellaneous Exhibit                               HTML     32K 
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     30K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     31K 
 9: EX-32.1     Certification -- §906 - SOA'02                      HTML     29K 
17: R1          Cover                                               HTML     98K 
18: R2          Consolidated Statements of Financial Condition      HTML    261K 
19: R3          Consolidated Statements of Financial Condition      HTML     55K 
                (Parenthetical)                                                  
20: R4          Consolidated Statements of Operations               HTML    173K 
21: R5          Consolidated Statements of Changes in Net Assets    HTML    101K 
22: R6          Consolidated Statements of Cash Flows               HTML    162K 
23: R7          Consolidated Statements of Cash Flows               HTML     29K 
                (Parenthetical)                                                  
24: R8          Consolidated Schedule of Investments                HTML  10.09M 
25: R9          Consolidated Schedule of Investments                HTML   6.65M 
                (Parenthetical)                                                  
26: R10         Organization                                        HTML     32K 
27: R11         Significant Accounting Policies and Recent          HTML     66K 
                Accounting Updates                                               
28: R12         Related Party Transactions                          HTML     57K 
29: R13         Investments                                         HTML    306K 
30: R14         Forward Currency Contracts                          HTML    156K 
31: R15         Fair Value Measurements                             HTML    179K 
32: R16         Borrowings                                          HTML    309K 
33: R17         Federal Income Tax Matters                          HTML     76K 
34: R18         Commitments and Contingencies                       HTML     34K 
35: R19         Financial Highlights                                HTML    124K 
36: R20         Earnings Per Share                                  HTML     38K 
37: R21         Common Stock Transactions                           HTML     53K 
38: R22         Dividends and Distributions                         HTML     83K 
39: R23         Subsequent Events                                   HTML     31K 
40: R24         Pay vs Performance Disclosure                       HTML     39K 
41: R25         Insider Trading Arrangements                        HTML     33K 
42: R26         N-2                                                 HTML   1.24M 
43: R27         Significant Accounting Policies and Recent          HTML    115K 
                Accounting Updates (Policies)                                    
44: R28         Investments (Tables)                                HTML    310K 
45: R29         Forward Currency Contracts (Tables)                 HTML    161K 
46: R30         Fair Value Measurements (Tables)                    HTML    173K 
47: R31         Borrowings (Tables)                                 HTML    267K 
48: R32         Federal Income Tax Matters (Tables)                 HTML     73K 
49: R33         Financial Highlights (Tables)                       HTML    123K 
50: R34         Earnings Per Share (Tables)                         HTML     38K 
51: R35         Common Stock Transactions (Tables)                  HTML     47K 
52: R36         Dividends and Distributions (Tables)                HTML     83K 
53: R37         Significant Accounting Policies and Recent          HTML    101K 
                Accounting Updates - Narrative (Details)                         
54: R38         Related Party Transactions - Narrative (Details)    HTML     83K 
55: R39         Investments - Fair Value, Assets Measured on        HTML     61K 
                Recurring Basis (Details)                                        
56: R40         Investments - Schedules of Portfolio Composition    HTML    137K 
                by Geographic Region at Amortization Cost and Fair               
                Value (Details)                                                  
57: R41         Investments - Schedule of Portfolio Composition by  HTML    332K 
                Industry at Amortization Cost and Fair Value                     
                (Details)                                                        
58: R42         Forward Currency Contracts - Open Forward Foreign   HTML    120K 
                Currency Contract (Details)                                      
59: R43         Forward Currency Contracts - Schedule of Forward    HTML     53K 
                Currency Contract, Fair Value (Details)                          
60: R44         Forward Currency Contracts - Schedule of Realized   HTML     40K 
                and Unrealized Gain (Loss) on Forward Currency                   
                Contract (Details)                                               
61: R45         Forward Currency Contracts - Summary of Average     HTML     33K 
                Outstanding Daily Volume for Forward Currency                    
                Contract (Details)                                               
62: R46         Fair Value Measurements - Schedule of Fair Value,   HTML     75K 
                Assets and Liabilities Measured on Recurring Basis               
                (Details)                                                        
63: R47         Fair Value Measurements - Narrative (Details)       HTML     33K 
64: R48         Fair Value Measurements - Fair Value, Assets        HTML     84K 
                Measured on Recurring Basis, Unobservable Input                  
                Reconciliation (Details)                                         
65: R49         Fair Value Measurements - Fair Value Measurement    HTML    112K 
                Inputs and Valuation Techniques (Details)                        
66: R50         Fair Value Measurements - Schedule of Carrying      HTML     32K 
                Values and Estimated Fair Values of Debt                         
                Instruments (Details)                                            
67: R51         Borrowings - Narrative (Details)                    HTML     31K 
68: R52         Borrowings - 2018 Debt Securitization (Narrative)   HTML     87K 
                (Details)                                                        
69: R53         Borrowings - Schedule of Debt Securitization        HTML    112K 
                (Details)                                                        
70: R54         Borrowings - Schedule of Interest Rate and          HTML     65K 
                Interest Differential Analysis (Details)                         
71: R55         Borrowings - GCIC 2018 Debt Securitization          HTML     94K 
                (Narrative) (Details)                                            
72: R56         Borrowings - 2020 Debt Securitization (Narrative)   HTML     60K 
                (Details)                                                        
73: R57         Borrowings - SBA Debentures (Narrative) (Details)   HTML     45K 
74: R58         Borrowings - MS Credit Facility II (Narrative)      HTML     55K 
                (Details)                                                        
75: R59         Borrowings - Wells Fargo Credit Facility            HTML     48K 
                (Narrative) (Details)                                            
76: R60         Borrowings - DB Credit Facility (Narrative)         HTML     57K 
                (Details)                                                        
77: R61         Borrowings - JPM Credit Facility (Narrative)        HTML     70K 
                (Details)                                                        
78: R62         Borrowings - 2024 Notes (Narrative) (Details)       HTML     52K 
79: R63         Borrowings - 2026 Notes (Narrative) (Details)       HTML     52K 
80: R64         Borrowings - 2027 Notes (Narrative) (Details)       HTML     51K 
81: R65         Borrowings - Adviser Revolver (Narrative)           HTML     49K 
                (Details)                                                        
82: R66         Borrowings - Schedule of Maturities of Long-Term    HTML     71K 
                Debt (Details)                                                   
83: R67         Federal Income Tax Matters - Schedule of            HTML     31K 
                Reclassification Taxable Income (Details)                        
84: R68         Federal Income Tax Matters - Reconciliation of      HTML     53K 
                Taxable Income Increase (Decrease) in Net Assets                 
                from Operation (Details)                                         
85: R69         Federal Income Tax Matters - Schedule of Tax        HTML     32K 
                Character of Distributions Paid (Details)                        
86: R70         Federal Income Tax Matters - Schedule of            HTML     40K 
                Accumulated Earnings (Deficit) Book Basis, Income                
                Tax (Details)                                                    
87: R71         Federal Income Tax Matters - Narrative (Details)    HTML     51K 
88: R72         Commitments and Contingencies (Details)             HTML     33K 
89: R73         Financial Highlights - Schedule of Investment       HTML    138K 
                Company, Financial Highlights (Details)                          
90: R74         Earnings Per Share - Schedule of Earnings Per       HTML     57K 
                Share, Basic and Diluted (Details)                               
91: R75         Common Stock Transactions - Narrative (Details)     HTML     38K 
92: R76         Common Stock Transactions - Schedule of Stock       HTML     42K 
                Repurchase Program (Details)                                     
93: R77         Dividends and Distributions - Summary of Dividends  HTML     48K 
                Declarations and Distributions (Details)                         
94: R78         Subsequent Events - Narrative (Details)             HTML     46K 
97: XML         IDEA XML File -- Filing Summary                      XML    172K 
95: XML         XBRL Instance -- gbdc-20230930_htm                   XML  42.11M 
96: EXCEL       IDEA Workbook of Financial Report Info              XLSX   1.18M 
13: EX-101.CAL  XBRL Calculations -- gbdc-20230930_cal               XML    221K 
14: EX-101.DEF  XBRL Definitions -- gbdc-20230930_def                XML   1.42M 
15: EX-101.LAB  XBRL Labels -- gbdc-20230930_lab                     XML   2.58M 
16: EX-101.PRE  XBRL Presentations -- gbdc-20230930_pre              XML   1.71M 
12: EX-101.SCH  XBRL Schema -- gbdc-20230930                         XSD    347K 
98: JSON        XBRL Instance as JSON Data -- MetaLinks              732±  1.05M 
99: ZIP         XBRL Zipped Folder -- 0001476765-23-000077-xbrl      Zip   1.90M

‘EX-101.LAB’ — XBRL Labels — gbdc-20230930_lab

This Exhibit is an XBRL File.

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<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>

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<link:loc xlink:type="locator" xlink:label="loc_gbdc_SignificantCostRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SignificantCostRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SignificantCostRiskMember" xlink:to="lab_gbdc_SignificantCostRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FederalIncomeTaxNoteTable_9fa23fc2-4b5e-4f74-bccb-7f60885afb5c_terseLabel_en-US" xlink:label="lab_us-gaap_FederalIncomeTaxNoteTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Federal Income Tax Note [Table] </link:label>

<link:label id="lab_us-gaap_FederalIncomeTaxNoteTable_label_en-US" xlink:label="lab_us-gaap_FederalIncomeTaxNoteTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Federal Income Tax Note [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalIncomeTaxNoteTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FederalIncomeTaxNoteTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalIncomeTaxNoteTable" xlink:to="lab_us-gaap_FederalIncomeTaxNoteTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTable_72c279c4-1efe-4fa6-bc4a-2e85cfb0a382_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Table] </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTable_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialHighlightsTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialHighlightsTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialHighlightsTable" xlink:to="lab_us-gaap_InvestmentCompanyFinancialHighlightsTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_cfb68a4b-331a-45ff-b840-8bf7bacb27ba_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred income tax liabilities, net </link:label>

<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred Income Tax Liabilities, Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdministratorMember_1656b0fa-e128-4585-acc4-51597c205e4b_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdministratorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Administrator </link:label>

<link:label id="lab_gbdc_InvestmentAdministratorMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdministratorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Administrator [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdministratorMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdministratorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Administrator </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdministratorMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdministratorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdministratorMember" xlink:to="lab_gbdc_InvestmentAdministratorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DiversifiedFinancialServicesSectorMember_13e8854d-bd1c-4566-83a4-112553d40700_terseLabel_en-US" xlink:label="lab_gbdc_DiversifiedFinancialServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Financial Services </link:label>

<link:label id="lab_gbdc_DiversifiedFinancialServicesSectorMember_label_en-US" xlink:label="lab_gbdc_DiversifiedFinancialServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Financial Services Sector [Member] </link:label>

<link:label id="lab_gbdc_DiversifiedFinancialServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_DiversifiedFinancialServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Financial Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DiversifiedFinancialServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_DiversifiedFinancialServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DiversifiedFinancialServicesSectorMember" xlink:to="lab_gbdc_DiversifiedFinancialServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_c01ed13a-d384-4294-b5cd-900b4d6aa05d_periodStartLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value, beginning of period </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_98bcdd78-fa21-44e0-8f69-9c0720879fef_periodEndLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value, end of period </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio_abd57d54-79ad-4726-8442-82f0895d4157_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of net investment income - after tax to average net assets </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Investment Income (Loss) Ratio </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyInvestmentIncomeLossRatio"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio" xlink:to="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossRatio" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_InsiderTradingPoliciesProcLineItems_label_en-US" xlink:label="lab_ecd_InsiderTradingPoliciesProcLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Policies and Procedures [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_InsiderTradingPoliciesProcLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:to="lab_ecd_InsiderTradingPoliciesProcLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_Rule10b51ArrTrmntdFlag_terseLabel_en-US" xlink:label="lab_ecd_Rule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rule 10b5-1 Arrangement Terminated </link:label>

<link:label id="lab_ecd_Rule10b51ArrTrmntdFlag_label_en-US" xlink:label="lab_ecd_Rule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rule 10b5-1 Arrangement Terminated [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_Rule10b51ArrTrmntdFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_Rule10b51ArrTrmntdFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_Rule10b51ArrTrmntdFlag" xlink:to="lab_ecd_Rule10b51ArrTrmntdFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CanadianDollarOfferedRateMember_f6bc3852-c189-40e7-8a90-a519331884b8_terseLabel_en-US" xlink:label="lab_gbdc_CanadianDollarOfferedRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Canadian Dollar Offered Rate </link:label>

<link:label id="lab_gbdc_CanadianDollarOfferedRateMember_label_en-US" xlink:label="lab_gbdc_CanadianDollarOfferedRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Canadian Dollar Offered Rate [Member] </link:label>

<link:label id="lab_gbdc_CanadianDollarOfferedRateMember_documentation_en-US" xlink:label="lab_gbdc_CanadianDollarOfferedRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Canadian Dollar Offered Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CanadianDollarOfferedRateMember" xlink:href="gbdc-20230930.xsd#gbdc_CanadianDollarOfferedRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CanadianDollarOfferedRateMember" xlink:to="lab_gbdc_CanadianDollarOfferedRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock_terseLabel_en-US" xlink:label="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement does not require Recovery </link:label>

<link:label id="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock_label_en-US" xlink:label="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement Does Not Require Recovery [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_RestatementDoesNotRequireRecoveryTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:to="lab_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7d685e9d-1a86-490d-964c-102669e72c7a_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock Transactions </link:label>

<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubordinatedDebtMember_1d04b87e-ffcf-42c7-bbaa-badfc017b454_terseLabel_en-US" xlink:label="lab_us-gaap_SubordinatedDebtMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subordinated debt </link:label>

<link:label id="lab_us-gaap_SubordinatedDebtMember_label_en-US" xlink:label="lab_us-gaap_SubordinatedDebtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subordinated Debt [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubordinatedDebtMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubordinatedDebtMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubordinatedDebtMember" xlink:to="lab_us-gaap_SubordinatedDebtMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentUnaffiliatedIssuerMember_62175f3f-0814-4e7b-8bab-a85d218937f7_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentUnaffiliatedIssuerMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-controlled/non-affiliate company investments </link:label>

<link:label id="lab_us-gaap_InvestmentUnaffiliatedIssuerMember_label_en-US" xlink:label="lab_us-gaap_InvestmentUnaffiliatedIssuerMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Unaffiliated Issuer [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentUnaffiliatedIssuerMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentUnaffiliatedIssuerMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentUnaffiliatedIssuerMember" xlink:to="lab_us-gaap_InvestmentUnaffiliatedIssuerMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member_8c984f7d-4efa-4de0-97c7-e77a58c14f0e_terseLabel_en-US" xlink:label="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> London Interbank Offered Rate (LIBOR) 1 [Member] </link:label>

<link:label id="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member_639a3b64-f775-475a-afcf-9866568a2b6f_verboseLabel_en-US" xlink:label="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> LIBOR </link:label>

<link:label id="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member_label_en-US" xlink:label="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> London Interbank Offered Rate (LIBOR) 1 [Member] </link:label>

<link:label id="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member_documentation_en-US" xlink:label="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> London Interbank Offered Rate (LIBOR) 1 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:href="gbdc-20230930.xsd#gbdc_LondonInterbankOfferedRateLIBOR1Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:to="lab_gbdc_LondonInterbankOfferedRateLIBOR1Member" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain_ebc0dfcf-61e7-4945-ba5b-5ba3afab22e1_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Capital Gains </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distribution, Long-Term Capital Gain </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributionLongTermCapitalGain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain" xlink:to="lab_us-gaap_InvestmentCompanyDistributionLongTermCapitalGain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PreferredStockValue_ab80de1c-8e73-4f48-a757-6b4a48185c2d_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred stock, par value $0.001 per share, 1,000,000 shares authorized, zero shares issued and outstanding as of September 30, 2023 and September 30, 2022 </link:label>

<link:label id="lab_us-gaap_PreferredStockValue_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred Stock, Value, Issued </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockValue" xlink:to="lab_us-gaap_PreferredStockValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventTypeDomain_747f638a-962d-48d1-bad7-37171d93109b_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event Type [Domain] </link:label>

<link:label id="lab_us-gaap_SubsequentEventTypeDomain_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain" xlink:to="lab_us-gaap_SubsequentEventTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_534f9ef4-5fae-42fc-afbc-190950c53213_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributions paid </link:label>

<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EarningsPerShareDiluted_f82648eb-d306-427f-92ad-f1ec02e13edf_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diluted earnings per common share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_EarningsPerShareDiluted_3f142287-1b1e-4515-bc3c-b339eab9ab18_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diluted earnings per share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_EarningsPerShareDiluted_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings Per Share, Diluted </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareDiluted"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted" xlink:to="lab_us-gaap_EarningsPerShareDiluted" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_e1b1779b-ce21-4f43-b4a0-a4c2b45157dd_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward currency contracts </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign Currency Contracts, Liability, Fair Value Disclosure </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:to="lab_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ValuationYieldAnalysisApproachMember_f837a522-af99-46a5-8958-4a3dbe385f5e_terseLabel_en-US" xlink:label="lab_gbdc_ValuationYieldAnalysisApproachMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Yield analysis </link:label>

<link:label id="lab_gbdc_ValuationYieldAnalysisApproachMember_label_en-US" xlink:label="lab_gbdc_ValuationYieldAnalysisApproachMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Yield Analysis Approach [Member] </link:label>

<link:label id="lab_gbdc_ValuationYieldAnalysisApproachMember_documentation_en-US" xlink:label="lab_gbdc_ValuationYieldAnalysisApproachMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Yield Analysis Approach </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ValuationYieldAnalysisApproachMember" xlink:href="gbdc-20230930.xsd#gbdc_ValuationYieldAnalysisApproachMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ValuationYieldAnalysisApproachMember" xlink:to="lab_gbdc_ValuationYieldAnalysisApproachMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax_a51a71e1-3d13-4a70-9728-e55c218035a7_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) </link:label>

<link:label id="lab_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax_label_en-US" xlink:label="lab_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Derivative and Foreign Currency Transaction Price Change, Operating, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax" xlink:to="lab_us-gaap_DerivativeAndForeignCurrencyTransactionPriceChangeUnrealizedGainLossOperatingBeforeTax" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OilGasAndConsumableFuelsSectorMember_9618c2d5-e4e5-47ed-b19c-75ac45e40422_terseLabel_en-US" xlink:label="lab_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas and Consumable Fuels </link:label>

<link:label id="lab_gbdc_OilGasAndConsumableFuelsSectorMember_label_en-US" xlink:label="lab_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas And Consumable Fuels Sector [Member] </link:label>

<link:label id="lab_gbdc_OilGasAndConsumableFuelsSectorMember_documentation_en-US" xlink:label="lab_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas And Consumable Fuels Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_OilGasAndConsumableFuelsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:to="lab_gbdc_OilGasAndConsumableFuelsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LineOfCreditMember_00c9b60b-4608-4ca9-b12d-250f454dea7f_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit </link:label>

<link:label id="lab_us-gaap_LineOfCreditMember_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditMember" xlink:to="lab_us-gaap_LineOfCreditMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_TradingSymbol_1da4b235-15a8-4bd2-ac32-322f9af9bf13_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Symbol </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_TradingSymbol" xlink:to="lab_dei_TradingSymbol" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AdministrativeFeesExpense_ab22043a-5267-4f97-918f-8f33cbb76589_terseLabel_en-US" xlink:label="lab_us-gaap_AdministrativeFeesExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administrative service fee </link:label>

<link:label id="lab_us-gaap_AdministrativeFeesExpense_label_en-US" xlink:label="lab_us-gaap_AdministrativeFeesExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administrative Fees Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdministrativeFeesExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdministrativeFeesExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdministrativeFeesExpense" xlink:to="lab_us-gaap_AdministrativeFeesExpense" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DependentUponAdvisorsRiskMember_label_en-US" xlink:label="lab_gbdc_DependentUponAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dependent Upon Advisors Risk [Member] </link:label>

<link:label id="lab_gbdc_DependentUponAdvisorsRiskMember_documentation_en-US" xlink:label="lab_gbdc_DependentUponAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dependent Upon Advisors Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DependentUponAdvisorsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DependentUponAdvisorsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DependentUponAdvisorsRiskMember" xlink:to="lab_gbdc_DependentUponAdvisorsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtSecuritiesMember_e29fe972-19f6-45ed-91ab-71acbc67db91_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Investments </link:label>

<link:label id="lab_us-gaap_DebtSecuritiesMember_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtSecuritiesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtSecuritiesMember" xlink:to="lab_us-gaap_DebtSecuritiesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueDisclosuresAbstract_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosures [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosuresAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_Notes2027Member_label_en-US" xlink:label="lab_gbdc_Notes2027Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2027 [Member] </link:label>

<link:label id="lab_gbdc_Notes2027Member_documentation_en-US" xlink:label="lab_gbdc_Notes2027Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2027 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_Notes2027Member" xlink:href="gbdc-20230930.xsd#gbdc_Notes2027Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_Notes2027Member" xlink:to="lab_gbdc_Notes2027Member" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1e4ad224-30ea-4d8b-90df-ecc8002e51bb_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounting Standards Update and Change in Accounting Principle [Table] </link:label>

<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounting Standards Update and Change in Accounting Principle [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MeasurementInputMarketInterestRateMember_f035ffe5-2c3f-4e0c-916d-26c1525b24ce_terseLabel_en-US" xlink:label="lab_gbdc_MeasurementInputMarketInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Market interest rate </link:label>

<link:label id="lab_gbdc_MeasurementInputMarketInterestRateMember_label_en-US" xlink:label="lab_gbdc_MeasurementInputMarketInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input, Market Interest Rate [Member] </link:label>

<link:label id="lab_gbdc_MeasurementInputMarketInterestRateMember_documentation_en-US" xlink:label="lab_gbdc_MeasurementInputMarketInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input, Market Interest Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MeasurementInputMarketInterestRateMember" xlink:href="gbdc-20230930.xsd#gbdc_MeasurementInputMarketInterestRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MeasurementInputMarketInterestRateMember" xlink:to="lab_gbdc_MeasurementInputMarketInterestRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FacilityFees_5cfffd4c-ddda-4992-8a18-e945f618d89e_terseLabel_en-US" xlink:label="lab_gbdc_FacilityFees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Facility fees </link:label>

<link:label id="lab_gbdc_FacilityFees_label_en-US" xlink:label="lab_gbdc_FacilityFees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Facility Fees </link:label>

<link:label id="lab_gbdc_FacilityFees_documentation_en-US" xlink:label="lab_gbdc_FacilityFees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Facility Fees </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FacilityFees" xlink:href="gbdc-20230930.xsd#gbdc_FacilityFees"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FacilityFees" xlink:to="lab_gbdc_FacilityFees" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_b347b0d2-9c1b-4f7a-9f0f-583b5b464328_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of debt premium </link:label>

<link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of Debt Discount (Premium) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDebtDiscountPremium" xlink:to="lab_us-gaap_AmortizationOfDebtDiscountPremium" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_WestRegionMember_af2216c2-6cbc-4ed8-9818-ceb65fd7fd0b_terseLabel_en-US" xlink:label="lab_us-gaap_WestRegionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> West </link:label>

<link:label id="lab_us-gaap_WestRegionMember_label_en-US" xlink:label="lab_us-gaap_WestRegionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US West Region [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WestRegionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WestRegionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WestRegionMember" xlink:to="lab_us-gaap_WestRegionMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockholdersEquityAbstract_85b0c9db-f65b-4eaf-b9a8-622610378b47_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Assets </link:label>

<link:label id="lab_us-gaap_StockholdersEquityAbstract_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity, Attributable to Parent [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract" xlink:to="lab_us-gaap_StockholdersEquityAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentIssuedPrincipal_9271f52c-536d-47c1-975a-7b3251cae229_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentIssuedPrincipal" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, issued, principal </link:label>

<link:label id="lab_us-gaap_DebtInstrumentIssuedPrincipal_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentIssuedPrincipal" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Issued, Principal </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentIssuedPrincipal" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentIssuedPrincipal"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentIssuedPrincipal" xlink:to="lab_us-gaap_DebtInstrumentIssuedPrincipal" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_f3f632ef-9b35-47d3-a983-f3e1214c9b8d_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Earnings Per Share, Basic and Diluted </link:label>

<link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NonHoldingControllingEquityInterestRiskMember_label_en-US" xlink:label="lab_gbdc_NonHoldingControllingEquityInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-holding Controlling Equity Interest Risk [Member] </link:label>

<link:label id="lab_gbdc_NonHoldingControllingEquityInterestRiskMember_documentation_en-US" xlink:label="lab_gbdc_NonHoldingControllingEquityInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-holding Controlling Equity Interest Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NonHoldingControllingEquityInterestRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_NonHoldingControllingEquityInterestRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NonHoldingControllingEquityInterestRiskMember" xlink:to="lab_gbdc_NonHoldingControllingEquityInterestRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LitigationOrRegulatoryInvestigationsRiskMember_label_en-US" xlink:label="lab_gbdc_LitigationOrRegulatoryInvestigationsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Litigation Or Regulatory Investigations Risk [Member] </link:label>

<link:label id="lab_gbdc_LitigationOrRegulatoryInvestigationsRiskMember_documentation_en-US" xlink:label="lab_gbdc_LitigationOrRegulatoryInvestigationsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Litigation Or Regulatory Investigations Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LitigationOrRegulatoryInvestigationsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LitigationOrRegulatoryInvestigationsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LitigationOrRegulatoryInvestigationsRiskMember" xlink:to="lab_gbdc_LitigationOrRegulatoryInvestigationsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ExecutiveCategoryAxis_terseLabel_en-US" xlink:label="lab_ecd_ExecutiveCategoryAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Executive Category: </link:label>

<link:label id="lab_ecd_ExecutiveCategoryAxis_label_en-US" xlink:label="lab_ecd_ExecutiveCategoryAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Executive Category [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ExecutiveCategoryAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ExecutiveCategoryAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ExecutiveCategoryAxis" xlink:to="lab_ecd_ExecutiveCategoryAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetAssetValuePerShare_76e78c88-a445-4d65-8d9c-410255924dc7_terseLabel_en-US" xlink:label="lab_us-gaap_NetAssetValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net asset value per common share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_NetAssetValuePerShare_2c1e2a4e-28e4-4bd1-9e50-80d8e7f452d5_periodStartLabel_en-US" xlink:label="lab_us-gaap_NetAssetValuePerShare" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net asset value at beginning of period (in dollars per share) </link:label>

<link:label id="lab_us-gaap_NetAssetValuePerShare_84771d59-cc27-46d2-8f3a-97ebe0c88b0b_periodEndLabel_en-US" xlink:label="lab_us-gaap_NetAssetValuePerShare" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net asset value at end of period (in dollars per share) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetAssetValuePerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetAssetValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetAssetValuePerShare" xlink:to="lab_us-gaap_NetAssetValuePerShare" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_f5eb3711-6c56-4d3f-86cd-c71fd272a46f_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions_60e134fc-142e-408f-8923-cce646b4f32f_totalLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Taxable income before deductions for distributions </link:label>

<link:label id="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Taxable Income Before Deductions for Distributions </link:label>

<link:label id="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Taxable Income Before Deductions for Distributions </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:to="lab_gbdc_InvestmentCompanyTaxableIncomeBeforeDeductionsForDistributions" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock_2b228d8b-329b-4eec-b775-9d33238a6a78_terseLabel_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract </link:label>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock_label_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OpenForwardForeignCurrencyContractTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock" xlink:to="lab_us-gaap_OpenForwardForeignCurrencyContractTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueInputsLevel1Member_eca1b252-b979-484a-8925-ef6cba547784_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Level 1 </link:label>

<link:label id="lab_us-gaap_FairValueInputsLevel1Member_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Inputs, Level 1 [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel1Member" xlink:to="lab_us-gaap_FairValueInputsLevel1Member" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassDGCIC2018NotesMember_9fff8776-02d9-4138-b689-11baf2cee0fe_terseLabel_en-US" xlink:label="lab_gbdc_ClassDGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class D GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassDGCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_ClassDGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class D GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_ClassDGCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_ClassDGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class D GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassDGCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassDGCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassDGCIC2018NotesMember" xlink:to="lab_gbdc_ClassDGCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementEquityComponentsAxis_d2c1fde3-c9e7-4628-90ce-14b6808e3cd9_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Components [Axis] </link:label>

<link:label id="lab_us-gaap_StatementEquityComponentsAxis_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Components [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis" xlink:to="lab_us-gaap_StatementEquityComponentsAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_59b989a2-5a35-4a05-908b-ceca38ee7faa_terseLabel_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financial Instruments [Domain] </link:label>

<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_label_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financial Instruments [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_Additional402vDisclosureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_Additional402vDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional 402(v) Disclosure </link:label>

<link:label id="lab_ecd_Additional402vDisclosureTextBlock_label_en-US" xlink:label="lab_ecd_Additional402vDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional 402(v) Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_Additional402vDisclosureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_Additional402vDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_Additional402vDisclosureTextBlock" xlink:to="lab_ecd_Additional402vDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentsAtAmortizedCostMember_1410e5ea-7e8d-4967-b96a-0ff4d5672f27_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentsAtAmortizedCostMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, at Amortized Cost </link:label>

<link:label id="lab_gbdc_InvestmentsAtAmortizedCostMember_label_en-US" xlink:label="lab_gbdc_InvestmentsAtAmortizedCostMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, At Amortized Cost [Member] </link:label>

<link:label id="lab_gbdc_InvestmentsAtAmortizedCostMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentsAtAmortizedCostMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, At Amortized Cost </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentsAtAmortizedCostMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentsAtAmortizedCostMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentsAtAmortizedCostMember" xlink:to="lab_gbdc_InvestmentsAtAmortizedCostMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentTypeAxis_7541cba1-a018-4bf3-a007-effa5071d3f5_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Type [Axis] </link:label>

<link:label id="lab_us-gaap_InvestmentTypeAxis_label_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentTypeAxis" xlink:to="lab_us-gaap_InvestmentTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProfessionalServicesSectorMember_e46a0f1f-bbf7-45fc-a02f-96f8623ad6d0_terseLabel_en-US" xlink:label="lab_gbdc_ProfessionalServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Professional Services </link:label>

<link:label id="lab_gbdc_ProfessionalServicesSectorMember_label_en-US" xlink:label="lab_gbdc_ProfessionalServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Professional Services Sector [Member] </link:label>

<link:label id="lab_gbdc_ProfessionalServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_ProfessionalServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Professional Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProfessionalServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_ProfessionalServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProfessionalServicesSectorMember" xlink:to="lab_gbdc_ProfessionalServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntitySmallBusiness_381e0a79-310d-4410-852c-e4786d2a3797_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Small Business </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntitySmallBusiness"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitySmallBusiness" xlink:to="lab_dei_EntitySmallBusiness" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentTypeCategorizationMember_f65f3618-153a-4fa9-a4ae-160ea9c5259b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments [Domain] </link:label>

<link:label id="lab_us-gaap_InvestmentTypeCategorizationMember_label_en-US" xlink:label="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentTypeCategorizationMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember" xlink:to="lab_us-gaap_InvestmentTypeCategorizationMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_LocalPhoneNumber_879086c2-52ab-466a-977e-973a56fb71dc_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Local Phone Number </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LocalPhoneNumber" xlink:to="lab_dei_LocalPhoneNumber" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedPercentOfNetAssets_4fd0d833-467c-4191-89c6-f0d1485ad9af_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Percentage of Net Assets </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedPercentOfNetAssets_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Net Assets, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedPercentOfNetAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedPercentOfNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedPercentOfNetAssets" xlink:to="lab_us-gaap_InvestmentOwnedPercentOfNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2e3e088a-95a1-4dda-9889-f3d53d81e31e_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Translation of assets and liabilities in foreign currencies </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_5d27869c-ca8b-4fca-8972-202675239636_negatedLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized (appreciation) depreciation on translation of assets and liabilities in foreign currencies </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Foreign Currency Transaction, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:to="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_RecoveryOfErrCompDisclosureLineItems_label_en-US" xlink:label="lab_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Recovery of Erroneously Awarded Compensation Disclosure [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_RecoveryOfErrCompDisclosureLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="lab_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LetterOfCreditMember_7c7416d1-8e63-464b-ae0c-ce4744829e3b_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Letter of Credit </link:label>

<link:label id="lab_us-gaap_LetterOfCreditMember_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Letter of Credit [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LetterOfCreditMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember" xlink:to="lab_us-gaap_LetterOfCreditMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MarineSectorMember_41693d67-f694-424c-85cf-1b451fd0042c_terseLabel_en-US" xlink:label="lab_gbdc_MarineSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Marine </link:label>

<link:label id="lab_gbdc_MarineSectorMember_label_en-US" xlink:label="lab_gbdc_MarineSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Marine Sector [Member] </link:label>

<link:label id="lab_gbdc_MarineSectorMember_documentation_en-US" xlink:label="lab_gbdc_MarineSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Marine Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MarineSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_MarineSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MarineSectorMember" xlink:to="lab_gbdc_MarineSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedAtCost_90f1a206-8af7-4d15-906b-48e1d60933ea_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortized Cost </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedAtCost_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Cost </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedAtCost" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedAtCost"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedAtCost" xlink:to="lab_us-gaap_InvestmentOwnedAtCost" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Violation of Home Country Law, Amount </link:label>

<link:label id="lab_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Violation of Home Country Law, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:to="lab_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DifficultyPayingRequiredDistributionsRiskMember_label_en-US" xlink:label="lab_gbdc_DifficultyPayingRequiredDistributionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Difficulty Paying Required Distributions Risk [Member] </link:label>

<link:label id="lab_gbdc_DifficultyPayingRequiredDistributionsRiskMember_documentation_en-US" xlink:label="lab_gbdc_DifficultyPayingRequiredDistributionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Difficulty Paying Required Distributions Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DifficultyPayingRequiredDistributionsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DifficultyPayingRequiredDistributionsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DifficultyPayingRequiredDistributionsRiskMember" xlink:to="lab_gbdc_DifficultyPayingRequiredDistributionsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments_ac642c93-a561-4cfb-8876-1085adbcb490_terseLabel_en-US" xlink:label="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Incentive fee </link:label>

<link:label id="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments_label_en-US" xlink:label="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Incentive Fee Expense, Net Of Adjustments </link:label>

<link:label id="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments_documentation_en-US" xlink:label="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Incentive Fee Expense, Net Of Adjustments </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:href="gbdc-20230930.xsd#gbdc_IncentiveFeeExpenseNetOfAdjustments"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:to="lab_gbdc_IncentiveFeeExpenseNetOfAdjustments" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAClassB2018NotesMember_66358f07-55e6-410a-9f07-53d20940a59f_terseLabel_en-US" xlink:label="lab_gbdc_AAClassB2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2018 Notes </link:label>

<link:label id="lab_gbdc_AAClassB2018NotesMember_label_en-US" xlink:label="lab_gbdc_AAClassB2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAClassB2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAClassB2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAClassB2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAClassB2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAClassB2018NotesMember" xlink:to="lab_gbdc_AAClassB2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DistributorsSectorMember_ff3fc746-6971-498f-91c8-192d3b3a3038_terseLabel_en-US" xlink:label="lab_gbdc_DistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributors </link:label>

<link:label id="lab_gbdc_DistributorsSectorMember_label_en-US" xlink:label="lab_gbdc_DistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributors Sector [Member] </link:label>

<link:label id="lab_gbdc_DistributorsSectorMember_documentation_en-US" xlink:label="lab_gbdc_DistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributors Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DistributorsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_DistributorsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DistributorsSectorMember" xlink:to="lab_gbdc_DistributorsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity_cd5f853d-a49a-4a43-a5b3-9f06acbcd729_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from principal payments and sales of portfolio investments </link:label>

<link:label id="lab_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from Disposition of Investment, Operating Activity </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity" xlink:to="lab_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ManagementFeeExpense_610fe361-fe78-4260-959f-4af5adb3cb70_terseLabel_en-US" xlink:label="lab_us-gaap_ManagementFeeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Base management fee </link:label>

<link:label id="lab_us-gaap_ManagementFeeExpense_label_en-US" xlink:label="lab_us-gaap_ManagementFeeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management Fee Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementFeeExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ManagementFeeExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ManagementFeeExpense" xlink:to="lab_us-gaap_ManagementFeeExpense" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_GCIC2018DebtSecuritizationMember_77812fc7-33a1-47e0-af46-a89f09c5a300_terseLabel_en-US" xlink:label="lab_gbdc_GCIC2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> GCIC 2018 Debt Securitization </link:label>

<link:label id="lab_gbdc_GCIC2018DebtSecuritizationMember_label_en-US" xlink:label="lab_gbdc_GCIC2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> GCIC 2018 Debt Securitization [Member] </link:label>

<link:label id="lab_gbdc_GCIC2018DebtSecuritizationMember_documentation_en-US" xlink:label="lab_gbdc_GCIC2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> GCIC 2018 Debt Securitization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_GCIC2018DebtSecuritizationMember" xlink:href="gbdc-20230930.xsd#gbdc_GCIC2018DebtSecuritizationMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_GCIC2018DebtSecuritizationMember" xlink:to="lab_gbdc_GCIC2018DebtSecuritizationMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NonSeniorLoanFundMember_3fa1f7e5-937b-4be9-ade9-c745c3710266_terseLabel_en-US" xlink:label="lab_gbdc_NonSeniorLoanFundMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Senior Loan Fund </link:label>

<link:label id="lab_gbdc_NonSeniorLoanFundMember_label_en-US" xlink:label="lab_gbdc_NonSeniorLoanFundMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Senior Loan Fund [Member] </link:label>

<link:label id="lab_gbdc_NonSeniorLoanFundMember_documentation_en-US" xlink:label="lab_gbdc_NonSeniorLoanFundMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Senior Loan Fund </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NonSeniorLoanFundMember" xlink:href="gbdc-20230930.xsd#gbdc_NonSeniorLoanFundMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NonSeniorLoanFundMember" xlink:to="lab_gbdc_NonSeniorLoanFundMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestExpenseDebt_80c9d42f-8afc-48f8-9a20-8c06d8a5b5fd_totalLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseDebt" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total interest and other debt financing expenses </link:label>

<link:label id="lab_us-gaap_InterestExpenseDebt_label_en-US" xlink:label="lab_us-gaap_InterestExpenseDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Expense, Debt </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpenseDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseDebt" xlink:to="lab_us-gaap_InterestExpenseDebt" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrSecuritiesAggAvailAmt_terseLabel_en-US" xlink:label="lab_ecd_TrdArrSecuritiesAggAvailAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aggregate Available </link:label>

<link:label id="lab_ecd_TrdArrSecuritiesAggAvailAmt_label_en-US" xlink:label="lab_ecd_TrdArrSecuritiesAggAvailAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement, Securities Aggregate Available Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrSecuritiesAggAvailAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrSecuritiesAggAvailAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrSecuritiesAggAvailAmt" xlink:to="lab_ecd_TrdArrSecuritiesAggAvailAmt" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_terseLabel_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Policies and Procedures Not Adopted </link:label>

<link:label id="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock_label_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Policies and Procedures Not Adopted [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:to="lab_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AwardTypeAxis_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Type </link:label>

<link:label id="lab_us-gaap_AwardTypeAxis_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis" xlink:to="lab_us-gaap_AwardTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember_label_en-US" xlink:label="lab_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Related To Other Arrangement With Advisors Risk [Member] </link:label>

<link:label id="lab_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember_documentation_en-US" xlink:label="lab_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Related To Other Arrangement With Advisors Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember" xlink:to="lab_gbdc_ConflictRelatedToOtherArrangementWithAdvisorsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EffectOfLeverageRiskMember_label_en-US" xlink:label="lab_gbdc_EffectOfLeverageRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Effect Of Leverage Risk [Member] </link:label>

<link:label id="lab_gbdc_EffectOfLeverageRiskMember_documentation_en-US" xlink:label="lab_gbdc_EffectOfLeverageRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Effect Of Leverage Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EffectOfLeverageRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_EffectOfLeverageRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EffectOfLeverageRiskMember" xlink:to="lab_gbdc_EffectOfLeverageRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_9694987a-3875-4bae-97e5-d1a92ae888b9_verboseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock issued in connection with dividend reinvestment plan (in shares) </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_a30ca0a9-02e5-468f-ad5c-eda437dcb6d3_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DRIP shares issued (in shares) </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued During Period, Shares, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_69a64967-79e2-4806-a75c-b03d2051490b_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Hierarchy and NAV [Domain] </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Hierarchy and NAV [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="arc" order="1"/>

<link:label id="lab_dei_IcfrAuditorAttestationFlag_7c05dd8e-aa01-45ee-906d-d8e13c77dbc7_terseLabel_en-US" xlink:label="lab_dei_IcfrAuditorAttestationFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> ICFR Auditor Attestation Flag </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_IcfrAuditorAttestationFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_IcfrAuditorAttestationFlag" xlink:to="lab_dei_IcfrAuditorAttestationFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAClassA22020NotesMember_910dc8e4-e8d1-4519-a6da-d3a80a4dc7bb_terseLabel_en-US" xlink:label="lab_gbdc_AAAClassA22020NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 2020 Notes </link:label>

<link:label id="lab_gbdc_AAAClassA22020NotesMember_label_en-US" xlink:label="lab_gbdc_AAAClassA22020NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 2020 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAAClassA22020NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAAClassA22020NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 2020 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAClassA22020NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAClassA22020NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAClassA22020NotesMember" xlink:to="lab_gbdc_AAAClassA22020NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember_label_en-US" xlink:label="lab_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest Between Advisors' Obligation Risk [Member] </link:label>

<link:label id="lab_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember_documentation_en-US" xlink:label="lab_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest Between Advisors' Obligation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember" xlink:to="lab_gbdc_ConflictOfInterestBetweenAdvisorsObligationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DividendsDeclaredTableTextBlock_0c41695d-9f52-4345-8afc-1cd9bc5fd7ca_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsDeclaredTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Summary of Dividends Declarations and Distributions </link:label>

<link:label id="lab_us-gaap_DividendsDeclaredTableTextBlock_label_en-US" xlink:label="lab_us-gaap_DividendsDeclaredTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends Declared [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsDeclaredTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsDeclaredTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsDeclaredTableTextBlock" xlink:to="lab_us-gaap_DividendsDeclaredTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_922b8973-1243-4f7c-9167-5c457c54040f_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transactions </link:label>

<link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transactions Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:to="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyContractualFeeWaived_2692929c-e580-476a-958d-5bbbc196e034_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyContractualFeeWaived" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Base management fee waived (Note 3) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyContractualFeeWaived_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyContractualFeeWaived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Contractual Fee Waived </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyContractualFeeWaived" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyContractualFeeWaived"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyContractualFeeWaived" xlink:to="lab_us-gaap_InvestmentCompanyContractualFeeWaived" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeoActuallyPaidCompAmt_terseLabel_en-US" xlink:label="lab_ecd_PeoActuallyPaidCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Actually Paid Compensation Amount </link:label>

<link:label id="lab_ecd_PeoActuallyPaidCompAmt_label_en-US" xlink:label="lab_ecd_PeoActuallyPaidCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Actually Paid Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeoActuallyPaidCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeoActuallyPaidCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoActuallyPaidCompAmt" xlink:to="lab_ecd_PeoActuallyPaidCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet_df7c4e27-7c0f-452b-b51e-ba9f89aad048_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, increase (decrease), net </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit Facility, Increase (Decrease), Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet" xlink:to="lab_us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ITServicesSectorMember_9b4cec49-4a59-4e0b-a2fc-4a8ed0adb268_terseLabel_en-US" xlink:label="lab_gbdc_ITServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> IT Services </link:label>

<link:label id="lab_gbdc_ITServicesSectorMember_label_en-US" xlink:label="lab_gbdc_ITServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> IT Services Sector [Member] </link:label>

<link:label id="lab_gbdc_ITServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_ITServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> IT Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ITServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_ITServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ITServicesSectorMember" xlink:to="lab_gbdc_ITServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_country_AU_e9d32b99-1bb1-4c8e-94a5-fc7cc99f2705_terseLabel_en-US" xlink:label="lab_country_AU" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Australia </link:label>

<link:label id="lab_country_AU_label_en-US" xlink:label="lab_country_AU" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AUSTRALIA </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_AU" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_AU"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_AU" xlink:to="lab_country_AU" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_GainLossOnSaleOfDerivatives_093d5b55-7cca-4dfa-b120-abf6cd167094_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfDerivatives" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward currency contracts </link:label>

<link:label id="lab_us-gaap_GainLossOnSaleOfDerivatives_0ad41824-7f10-4b73-a630-734c8ede6467_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfDerivatives" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized (gain) loss on forward currency contracts </link:label>

<link:label id="lab_us-gaap_GainLossOnSaleOfDerivatives_4a1b2cbc-4606-4858-9cb6-8ab7c036448f_verboseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfDerivatives" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized gain (loss) on forward currency contracts recognized in income </link:label>

<link:label id="lab_us-gaap_GainLossOnSaleOfDerivatives_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfDerivatives" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gain (Loss) on Sale of Derivatives </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfDerivatives" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfDerivatives"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfDerivatives" xlink:to="lab_us-gaap_GainLossOnSaleOfDerivatives" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_e06f194b-6059-4857-b593-057374c17d6c_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Estimated capital loss carryforward available for use </link:label>

<link:label id="lab_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred Tax Assets, Capital Loss Carryforwards </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:to="lab_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember_label_en-US" xlink:label="lab_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Structurally Subordinated To The Obligation Of Subsidiaries Risk [Member] </link:label>

<link:label id="lab_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember_documentation_en-US" xlink:label="lab_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Structurally Subordinated To The Obligation Of Subsidiaries Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember" xlink:to="lab_gbdc_StructurallySubordinatedToTheObligationOfSubsidiariesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeAssetNotionalAmount_a52df1f0-a775-4964-bfe4-3a0d2daf919e_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssetNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Currency to be purchased </link:label>

<link:label id="lab_us-gaap_DerivativeAssetNotionalAmount_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset, Notional Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotionalAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetNotionalAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssetNotionalAmount" xlink:to="lab_us-gaap_DerivativeAssetNotionalAmount" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentInterestRate_2746a552-bece-48d2-8222-107623ec81c8_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment interest rate </link:label>

<link:label id="lab_us-gaap_InvestmentInterestRate_label_en-US" xlink:label="lab_us-gaap_InvestmentInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Interest Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentInterestRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentInterestRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentInterestRate" xlink:to="lab_us-gaap_InvestmentInterestRate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PrivatePlacementMember_0b8354de-ef81-4b45-a14c-cacb7f659a25_terseLabel_en-US" xlink:label="lab_us-gaap_PrivatePlacementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Private Placement </link:label>

<link:label id="lab_us-gaap_PrivatePlacementMember_label_en-US" xlink:label="lab_us-gaap_PrivatePlacementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Private Placement [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivatePlacementMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrivatePlacementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrivatePlacementMember" xlink:to="lab_us-gaap_PrivatePlacementMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_StkPrcOrTsrEstimationMethodTextBlock_terseLabel_en-US" xlink:label="lab_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Price or TSR Estimation Method </link:label>

<link:label id="lab_ecd_StkPrcOrTsrEstimationMethodTextBlock_label_en-US" xlink:label="lab_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Price or TSR Estimation Method [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_StkPrcOrTsrEstimationMethodTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:to="lab_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_f91003eb-74e8-4f52-ab58-75b14c0dc880_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, commitment fee percentage </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit Facility, Commitment Fee Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:to="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:type="arc" order="1"/>

<link:label id="lab_dei_SecurityExchangeName_a4518854-6658-440d-8706-9c1150080961_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Security Exchange Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_SecurityExchangeName" xlink:to="lab_dei_SecurityExchangeName" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract_497de655-cd6f-43c5-aea6-b48cf217c2af_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net gain (loss) on investment transactions </link:label>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract_label_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract" xlink:to="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTaxAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation_6eadbd4c-1703-4eb6-ba24-44806c64895e_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net unrealized appreciation (depreciation) on investments </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distributable Earnings (Loss), Accumulated Appreciation (Depreciation) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation" xlink:to="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedAppreciationDepreciation" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EmployeeStockOptionMember_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Employee Stock Option </link:label>

<link:label id="lab_us-gaap_EmployeeStockOptionMember_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Employee Stock Option [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember" xlink:to="lab_us-gaap_EmployeeStockOptionMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_0c9f7fcb-2757-4d14-9ea5-bf622d4ab146_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward Currency Contracts </link:label>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentPolicyTextBlock_b4d56d84-2972-4ed7-beb5-111fe2368cf7_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment transactions </link:label>

<link:label id="lab_us-gaap_InvestmentPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentPolicyTextBlock" xlink:to="lab_us-gaap_InvestmentPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets_057f9846-0a21-4f47-9ef9-d51fc137f044_negatedTerseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of management fee waiver to average net assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Management Fee Waiver To Average Net Assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Management Fee Waiver To Average Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:to="lab_gbdc_InvestmentCompanyManagementFeeWaiverToAverageNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_fc589dc5-d7d5-48d2-891b-676e223e2035_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward currency contracts </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign Currency Contract, Asset, Fair Value Disclosure </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:to="lab_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember_label_en-US" xlink:label="lab_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technological Innovations And Industry Disruptions Risk [Member] </link:label>

<link:label id="lab_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember_documentation_en-US" xlink:label="lab_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technological Innovations And Industry Disruptions Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember" xlink:to="lab_gbdc_TechnologicalInnovationsAndIndustryDisruptionsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentRepurchasedFaceAmount_200b3aac-52ea-4ff7-9941-967dbe3caef9_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, repurchased face amount </link:label>

<link:label id="lab_us-gaap_DebtInstrumentRepurchasedFaceAmount_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Repurchased Face Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentRepurchasedFaceAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:to="lab_us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:type="arc" order="1"/>

<link:label id="lab_srt_MaximumMember_3f5e3f53-b84b-49b3-98d6-53b48ce7c03f_terseLabel_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Maximum </link:label>

<link:label id="lab_srt_MaximumMember_label_en-US" xlink:label="lab_srt_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Maximum [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember" xlink:to="lab_srt_MaximumMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentType_a80e15bf-d544-47da-a9f0-71d178f33af9_terseLabel_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Type </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType" xlink:to="lab_dei_DocumentType" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassA2GCIC2018NotesMember_ab782b4d-5074-42b8-99be-245056745563_terseLabel_en-US" xlink:label="lab_gbdc_ClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassA2GCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_ClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2 GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_ClassA2GCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_ClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2 GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassA2GCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassA2GCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassA2GCIC2018NotesMember" xlink:to="lab_gbdc_ClassA2GCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_1af04906-d706-4f0b-a831-13ec5e84691e_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, interest rate during period </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit Facility, Interest Rate During Period </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:to="lab_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_GeographicConcentrationRiskMember_344cfa4c-02e8-417a-a084-26323c28f5d0_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographic Concentration Risk </link:label>

<link:label id="lab_us-gaap_GeographicConcentrationRiskMember_label_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographic Concentration Risk [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicConcentrationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeographicConcentrationRiskMember" xlink:to="lab_us-gaap_GeographicConcentrationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TabularListTableTextBlock_terseLabel_en-US" xlink:label="lab_ecd_TabularListTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tabular List, Table </link:label>

<link:label id="lab_ecd_TabularListTableTextBlock_label_en-US" xlink:label="lab_ecd_TabularListTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tabular List [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TabularListTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TabularListTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TabularListTableTextBlock" xlink:to="lab_ecd_TabularListTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_GovernmentInterventionInCreditMarketsRiskMember_label_en-US" xlink:label="lab_gbdc_GovernmentInterventionInCreditMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Government Intervention In Credit Markets Risk [Member] </link:label>

<link:label id="lab_gbdc_GovernmentInterventionInCreditMarketsRiskMember_documentation_en-US" xlink:label="lab_gbdc_GovernmentInterventionInCreditMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Government Intervention In Credit Markets Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_GovernmentInterventionInCreditMarketsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_GovernmentInterventionInCreditMarketsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_GovernmentInterventionInCreditMarketsRiskMember" xlink:to="lab_gbdc_GovernmentInterventionInCreditMarketsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SystemFailureRiskMember_label_en-US" xlink:label="lab_gbdc_SystemFailureRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> System Failure Risk [Member] </link:label>

<link:label id="lab_gbdc_SystemFailureRiskMember_documentation_en-US" xlink:label="lab_gbdc_SystemFailureRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> System Failure Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SystemFailureRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SystemFailureRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SystemFailureRiskMember" xlink:to="lab_gbdc_SystemFailureRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_3683048a-0a99-4d84-9174-49964af04bb4_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basis of presentation </link:label>

<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basis of Accounting, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BuildingProductsSectorMember_e9288a42-f2e2-4c51-acac-3feee88bed98_terseLabel_en-US" xlink:label="lab_gbdc_BuildingProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Building Products </link:label>

<link:label id="lab_gbdc_BuildingProductsSectorMember_label_en-US" xlink:label="lab_gbdc_BuildingProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Building Products Sector [Member] </link:label>

<link:label id="lab_gbdc_BuildingProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_BuildingProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Building Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BuildingProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_BuildingProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BuildingProductsSectorMember" xlink:to="lab_gbdc_BuildingProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue_d583bd7d-18da-4a15-aa2f-6e3c41d7b36c_totalLabel_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total investment owned, at cost and money market funds, at carrying value </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue_label_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, At Cost And Money Market Funds, At Carrying Value </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue_documentation_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, At Cost And Money Market Funds, At Carrying Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:to="lab_gbdc_InvestmentOwnedAtCostAndMoneyMarketFundsAtCarryingValue" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyPerShareDataAbstract_81dcefd6-8db7-43a9-ada1-621bd29dcfb5_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Per Share Data </link:label>

<link:label id="lab_gbdc_InvestmentCompanyPerShareDataAbstract_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company Per Share Data [Abstract] </link:label>

<link:label id="lab_gbdc_InvestmentCompanyPerShareDataAbstract_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company Per Share Data </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyPerShareDataAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:to="lab_gbdc_InvestmentCompanyPerShareDataAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EURIBORMember_5b6263f7-1978-4d57-bff4-5b3b3c3b6aa4_terseLabel_en-US" xlink:label="lab_gbdc_EURIBORMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> EURIBOR </link:label>

<link:label id="lab_gbdc_EURIBORMember_label_en-US" xlink:label="lab_gbdc_EURIBORMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> EURIBOR [Member] </link:label>

<link:label id="lab_gbdc_EURIBORMember_documentation_en-US" xlink:label="lab_gbdc_EURIBORMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> EURIBOR </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EURIBORMember" xlink:href="gbdc-20230930.xsd#gbdc_EURIBORMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EURIBORMember" xlink:to="lab_gbdc_EURIBORMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentSinkingFundPayment_7c2ac238-9006-4401-938a-73199a5ab900_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentSinkingFundPayment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, sinking fund payment </link:label>

<link:label id="lab_us-gaap_DebtInstrumentSinkingFundPayment_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentSinkingFundPayment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Sinking Fund Payment </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentSinkingFundPayment" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentSinkingFundPayment"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentSinkingFundPayment" xlink:to="lab_us-gaap_DebtInstrumentSinkingFundPayment" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedBalancePrincipalAmount_cfbbe45f-98ed-4629-a126-d6ac5495b42b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment owned, balance, principal amount </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedBalancePrincipalAmount_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Balance, Principal Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedBalancePrincipalAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:to="lab_us-gaap_InvestmentOwnedBalancePrincipalAmount" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PersonalProductsSectorMember_907c5b28-b5d7-4b74-bcff-1c688fd9574f_terseLabel_en-US" xlink:label="lab_gbdc_PersonalProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Personal Products </link:label>

<link:label id="lab_gbdc_PersonalProductsSectorMember_label_en-US" xlink:label="lab_gbdc_PersonalProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Personal Products Sector [Member] </link:label>

<link:label id="lab_gbdc_PersonalProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_PersonalProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Personal Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PersonalProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_PersonalProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PersonalProductsSectorMember" xlink:to="lab_gbdc_PersonalProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_VariableRateAxis_753cff6c-ba2f-499b-8707-17ba8de15d04_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Variable Rate [Axis] </link:label>

<link:label id="lab_us-gaap_VariableRateAxis_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Variable Rate [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableRateAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis" xlink:to="lab_us-gaap_VariableRateAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_ed908382-59e1-43a1-8b81-d1beeb6eb88d_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounts payable and other liabilities </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Accounts Payable and Accrued Liabilities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_0b1ada32-e8ea-441f-ba09-219325c32140_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of incentive fees to average net assets </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Incentive Fee to Average Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets" xlink:to="lab_us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ChangesInInterestRatesRiskMember_label_en-US" xlink:label="lab_gbdc_ChangesInInterestRatesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changes In Interest Rates Risk [Member] </link:label>

<link:label id="lab_gbdc_ChangesInInterestRatesRiskMember_documentation_en-US" xlink:label="lab_gbdc_ChangesInInterestRatesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changes In Interest Rates Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ChangesInInterestRatesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ChangesInInterestRatesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ChangesInInterestRatesRiskMember" xlink:to="lab_gbdc_ChangesInInterestRatesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetInvestmentIncome_e00ee912-3af1-4c3b-acac-b235cdf32c89_totalLabel_en-US" xlink:label="lab_us-gaap_NetInvestmentIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net investment income - before tax </link:label>

<link:label id="lab_us-gaap_NetInvestmentIncome_label_en-US" xlink:label="lab_us-gaap_NetInvestmentIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Investment Income </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetInvestmentIncome"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetInvestmentIncome" xlink:to="lab_us-gaap_NetInvestmentIncome" xlink:type="arc" order="1"/>

<link:label id="lab_dei_Security12bTitle_5e986baf-8720-48fb-81ed-9eabb85ca066_terseLabel_en-US" xlink:label="lab_dei_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Title of 12(b) Security </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_Security12bTitle" xlink:to="lab_dei_Security12bTitle" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock_a43c0270-9f8e-4a52-86ca-f4c14cea000b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financial Highlights </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialHighlightsTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock" xlink:to="lab_us-gaap_InvestmentCompanyFinancialHighlightsTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyDomain_7fb6d6e1-e686-443e-af55-3373126a8d98_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party [Domain] </link:label>

<link:label id="lab_us-gaap_RelatedPartyDomain_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party, Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain" xlink:to="lab_us-gaap_RelatedPartyDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockholdersEquityPolicyTextBlock_460a5cda-52a2-4c43-a22a-d0602deea23a_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Share repurchase plan </link:label>

<link:label id="lab_us-gaap_StockholdersEquityPolicyTextBlock_a3c11a60-62af-4edf-8bcc-ec841a449c08_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred offering costs </link:label>

<link:label id="lab_us-gaap_StockholdersEquityPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stockholders' Equity, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityPolicyTextBlock" xlink:to="lab_us-gaap_StockholdersEquityPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FoodAndBeverageSectorMember_04c34b61-0168-48c9-95ae-1a3943684a04_terseLabel_en-US" xlink:label="lab_us-gaap_FoodAndBeverageSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beverages </link:label>

<link:label id="lab_us-gaap_FoodAndBeverageSectorMember_label_en-US" xlink:label="lab_us-gaap_FoodAndBeverageSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food and Beverage Sector [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FoodAndBeverageSectorMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FoodAndBeverageSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FoodAndBeverageSectorMember" xlink:to="lab_us-gaap_FoodAndBeverageSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AggtErrCompNotYetDeterminedTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aggregate Erroneous Compensation Not Yet Determined </link:label>

<link:label id="lab_ecd_AggtErrCompNotYetDeterminedTextBlock_label_en-US" xlink:label="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aggregate Erroneous Compensation Not Yet Determined [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AggtErrCompNotYetDeterminedTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:to="lab_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ValuationCollateralAnalysisMember_f7554967-f9c2-41c0-971e-96e31680d84f_terseLabel_en-US" xlink:label="lab_gbdc_ValuationCollateralAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Collateral analysis </link:label>

<link:label id="lab_gbdc_ValuationCollateralAnalysisMember_label_en-US" xlink:label="lab_gbdc_ValuationCollateralAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Collateral Analysis [Member] </link:label>

<link:label id="lab_gbdc_ValuationCollateralAnalysisMember_documentation_en-US" xlink:label="lab_gbdc_ValuationCollateralAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Collateral Analysis </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ValuationCollateralAnalysisMember" xlink:href="gbdc-20230930.xsd#gbdc_ValuationCollateralAnalysisMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ValuationCollateralAnalysisMember" xlink:to="lab_gbdc_ValuationCollateralAnalysisMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan_2a33bb07-e663-43e9-bf45-74ed8dd0daed_terseLabel_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DRIP shares purchase (in shares) </link:label>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan_label_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Purchased During Period, Shares, Dividend Reinvestment Plan </link:label>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan_documentation_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Purchased During Period, Shares, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:href="gbdc-20230930.xsd#gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:to="lab_gbdc_StockPurchasedDuringPeriodSharesDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAClassA2GCIC2018NotesMember_3bdd4efc-fbcf-4c08-9ef0-cff9839df2f1_terseLabel_en-US" xlink:label="lab_gbdc_AAAClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_AAAClassA2GCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_AAAClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAAClassA2GCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAAClassA2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-2 GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAClassA2GCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAClassA2GCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAClassA2GCIC2018NotesMember" xlink:to="lab_gbdc_AAAClassA2GCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Expense of Enforcement, Amount </link:label>

<link:label id="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Expense of Enforcement, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:to="lab_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Share-Based Payment Arrangement [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityTaxIdentificationNumber_96bff269-1ce6-4ea4-bb78-0a66c276182d_terseLabel_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Tax Identification Number </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityTaxIdentificationNumber" xlink:to="lab_dei_EntityTaxIdentificationNumber" xlink:type="arc" order="1"/>

<link:label id="lab_srt_RangeAxis_ed9fdc02-7503-49a7-b597-3681e578bf73_terseLabel_en-US" xlink:label="lab_srt_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>

<link:label id="lab_srt_RangeAxis_label_en-US" xlink:label="lab_srt_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis" xlink:to="lab_srt_RangeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CompetitiveMarketRiskMember_label_en-US" xlink:label="lab_gbdc_CompetitiveMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Competitive Market Risk [Member] </link:label>

<link:label id="lab_gbdc_CompetitiveMarketRiskMember_documentation_en-US" xlink:label="lab_gbdc_CompetitiveMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Competitive Market Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CompetitiveMarketRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_CompetitiveMarketRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CompetitiveMarketRiskMember" xlink:to="lab_gbdc_CompetitiveMarketRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BalanceSheetLocationDomain_3f7276d9-946e-497a-a8f3-43df6fd201d2_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>

<link:label id="lab_us-gaap_BalanceSheetLocationDomain_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationDomain" xlink:to="lab_us-gaap_BalanceSheetLocationDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestExpenseDebtExcludingAmortization_d2cae849-673e-4f23-8c60-cad710e985f3_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseDebtExcludingAmortization" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stated interest expense </link:label>

<link:label id="lab_us-gaap_InterestExpenseDebtExcludingAmortization_label_en-US" xlink:label="lab_us-gaap_InterestExpenseDebtExcludingAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Expense, Debt, Excluding Amortization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebtExcludingAmortization" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpenseDebtExcludingAmortization"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseDebtExcludingAmortization" xlink:to="lab_us-gaap_InterestExpenseDebtExcludingAmortization" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HealthCareTechnologySectorMember_283d792a-905d-4824-ab1a-8bda519b3957_terseLabel_en-US" xlink:label="lab_gbdc_HealthCareTechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Technology </link:label>

<link:label id="lab_gbdc_HealthCareTechnologySectorMember_label_en-US" xlink:label="lab_gbdc_HealthCareTechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Technology Sector [Member] </link:label>

<link:label id="lab_gbdc_HealthCareTechnologySectorMember_documentation_en-US" xlink:label="lab_gbdc_HealthCareTechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Technology Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HealthCareTechnologySectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HealthCareTechnologySectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HealthCareTechnologySectorMember" xlink:to="lab_gbdc_HealthCareTechnologySectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDividendDistribution_e4e8dadb-f013-4b4b-9f26-3be8b16e71ba_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDividendDistribution" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributions from distributable earnings </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDividendDistribution_6abb7559-33cd-4122-bfd2-bdbfc6b77ee3_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDividendDistribution" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash Distribution </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDividendDistribution_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDividendDistribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Dividend Distribution </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDividendDistribution" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDividendDistribution"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDividendDistribution" xlink:to="lab_us-gaap_InvestmentCompanyDividendDistribution" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityInteractiveDataCurrent_fabe3868-5a4e-4f93-ab55-6f7ed099d01c_terseLabel_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Interactive Data Current </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityInteractiveDataCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityInteractiveDataCurrent" xlink:to="lab_dei_EntityInteractiveDataCurrent" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans_7d87c987-ad2b-4516-8cf8-b019158c583e_terseLabel_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fundings of (proceeds from) revolving loans, net </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans_label_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances (Settlements) Of Undrawn Portion Of Revolving Loans </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans_documentation_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances (Settlements) Of Undrawn Portion Of Revolving Loans </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:href="gbdc-20230930.xsd#gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:to="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuancesSettlementsOfUndrawnPortionOfRevolvingLoans" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax_8d5a43b2-54d1-4d8f-957d-040b324128aa_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income tax </link:label>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax_label_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Operating, Tax Expense (Benefit), Income Tax </link:label>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax_documentation_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Operating, Tax Expense (Benefit), Income Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:to="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitIncomeTax" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EnergyEquipmentAndServicesSectorMember_7759f225-d295-456e-816f-6dc8a6925414_terseLabel_en-US" xlink:label="lab_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Energy Equipment and Services </link:label>

<link:label id="lab_gbdc_EnergyEquipmentAndServicesSectorMember_label_en-US" xlink:label="lab_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Energy Equipment And Services Sector [Member] </link:label>

<link:label id="lab_gbdc_EnergyEquipmentAndServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Energy Equipment And Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_EnergyEquipmentAndServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:to="lab_gbdc_EnergyEquipmentAndServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassVotingRightRiskMember_label_en-US" xlink:label="lab_gbdc_ClassVotingRightRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class Voting Right Risk [Member] </link:label>

<link:label id="lab_gbdc_ClassVotingRightRiskMember_documentation_en-US" xlink:label="lab_gbdc_ClassVotingRightRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class Voting Right Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassVotingRightRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassVotingRightRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassVotingRightRiskMember" xlink:to="lab_gbdc_ClassVotingRightRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AutomobilesSectorMember_f1fddcbb-be53-4bdd-a46d-37960e9b7167_terseLabel_en-US" xlink:label="lab_gbdc_AutomobilesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Automobiles </link:label>

<link:label id="lab_gbdc_AutomobilesSectorMember_label_en-US" xlink:label="lab_gbdc_AutomobilesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Automobiles Sector [Member] </link:label>

<link:label id="lab_gbdc_AutomobilesSectorMember_documentation_en-US" xlink:label="lab_gbdc_AutomobilesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Automobiles Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AutomobilesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_AutomobilesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AutomobilesSectorMember" xlink:to="lab_gbdc_AutomobilesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TradeAtADiscountFromNetAssetValueRiskMember_label_en-US" xlink:label="lab_gbdc_TradeAtADiscountFromNetAssetValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trade At A discount From Net Asset Value Risk [Member] </link:label>

<link:label id="lab_gbdc_TradeAtADiscountFromNetAssetValueRiskMember_documentation_en-US" xlink:label="lab_gbdc_TradeAtADiscountFromNetAssetValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trade At A discount From Net Asset Value Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TradeAtADiscountFromNetAssetValueRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_TradeAtADiscountFromNetAssetValueRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TradeAtADiscountFromNetAssetValueRiskMember" xlink:to="lab_gbdc_TradeAtADiscountFromNetAssetValueRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityWellKnownSeasonedIssuer_28bad439-fd70-4335-a015-27419b2c8ecf_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Well-known Seasoned Issuer </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityWellKnownSeasonedIssuer"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityWellKnownSeasonedIssuer" xlink:to="lab_dei_EntityWellKnownSeasonedIssuer" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember_label_en-US" xlink:label="lab_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Operation Of Portfolio Company Upon Default Risk [Member] </link:label>

<link:label id="lab_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember_documentation_en-US" xlink:label="lab_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Operation Of Portfolio Company Upon Default Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember" xlink:to="lab_gbdc_OperationOfPortfolioCompanyUponDefaultRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver_13b28af1-11b5-4c33-95df-9ea454340c98_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Base management fee, net of waiver </link:label>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Management Fee Expense, After Reduction Of Fee Waiver </link:label>

<link:label id="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Management Fee Expense, After Reduction Of Fee Waiver </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:to="lab_gbdc_InvestmentCompanyManagementFeeExpenseAfterReductionOfFeeWaiver" xlink:type="arc" order="1"/>

<link:label id="lab_country_FI_cd4cfa0e-e371-410f-abea-3230484ec113_terseLabel_en-US" xlink:label="lab_country_FI" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Finland </link:label>

<link:label id="lab_country_FI_label_en-US" xlink:label="lab_country_FI" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> FINLAND </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_FI" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_FI"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_FI" xlink:to="lab_country_FI" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RaisingAdditionalCapitalExposureRiskMember_label_en-US" xlink:label="lab_gbdc_RaisingAdditionalCapitalExposureRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Raising Additional Capital Exposure Risk [Member] </link:label>

<link:label id="lab_gbdc_RaisingAdditionalCapitalExposureRiskMember_documentation_en-US" xlink:label="lab_gbdc_RaisingAdditionalCapitalExposureRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Raising Additional Capital Exposure Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RaisingAdditionalCapitalExposureRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_RaisingAdditionalCapitalExposureRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RaisingAdditionalCapitalExposureRiskMember" xlink:to="lab_gbdc_RaisingAdditionalCapitalExposureRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ContingentLiabilitiesRiskMember_label_en-US" xlink:label="lab_gbdc_ContingentLiabilitiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Contingent Liabilities Risk [Member] </link:label>

<link:label id="lab_gbdc_ContingentLiabilitiesRiskMember_documentation_en-US" xlink:label="lab_gbdc_ContingentLiabilitiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Contingent Liabilities Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ContingentLiabilitiesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ContingentLiabilitiesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ContingentLiabilitiesRiskMember" xlink:to="lab_gbdc_ContingentLiabilitiesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_MeasureAxis_terseLabel_en-US" xlink:label="lab_ecd_MeasureAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measure: </link:label>

<link:label id="lab_ecd_MeasureAxis_label_en-US" xlink:label="lab_ecd_MeasureAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measure [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_MeasureAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MeasureAxis" xlink:to="lab_ecd_MeasureAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_OutstandingRecoveryIndName_terseLabel_en-US" xlink:label="lab_ecd_OutstandingRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Name </link:label>

<link:label id="lab_ecd_OutstandingRecoveryIndName_label_en-US" xlink:label="lab_ecd_OutstandingRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Outstanding Recovery, Individual Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_OutstandingRecoveryIndName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OutstandingRecoveryIndName" xlink:to="lab_ecd_OutstandingRecoveryIndName" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput_f4a74ff2-5b1b-4583-94d5-b9b953f0efde_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment company, investment owned, measurement input </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Investment Owned, Measurement Input </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput" xlink:to="lab_us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityIncorporationStateCountryCode_93cc63f0-e863-4dc5-a68b-d7480b505a9e_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Incorporation, State or Country Code </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationStateCountryCode" xlink:to="lab_dei_EntityIncorporationStateCountryCode" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DistributionTypeDomain_5c209891-8b92-4d5f-b43b-44e1ecc247d5_terseLabel_en-US" xlink:label="lab_us-gaap_DistributionTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution Type [Domain] </link:label>

<link:label id="lab_us-gaap_DistributionTypeDomain_label_en-US" xlink:label="lab_us-gaap_DistributionTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DistributionTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DistributionTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DistributionTypeDomain" xlink:to="lab_us-gaap_DistributionTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AClassC22018NotesMember_060b0200-d57b-40bf-a99d-25eac4a7155c_terseLabel_en-US" xlink:label="lab_gbdc_AClassC22018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-2 2018 Notes </link:label>

<link:label id="lab_gbdc_AClassC22018NotesMember_label_en-US" xlink:label="lab_gbdc_AClassC22018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-2 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AClassC22018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AClassC22018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-2 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AClassC22018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AClassC22018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AClassC22018NotesMember" xlink:to="lab_gbdc_AClassC22018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_d4e412c6-816e-4575-9ed1-e4b91f867382_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Carrying Values and Estimated Fair Values of Debt Instruments </link:label>

<link:label id="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_cb03f5d2-1797-4eef-9554-9a60949314a6_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward currency contracts </link:label>

<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivatives, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativesPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesPolicyTextBlock" xlink:to="lab_us-gaap_DerivativesPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9233ce45-d185-4f92-9cd1-ab530417cf8e_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InsuranceSectorsMember_dcc548f9-05e3-4a88-bb3d-1c553a716d50_terseLabel_en-US" xlink:label="lab_gbdc_InsuranceSectorsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insurance </link:label>

<link:label id="lab_gbdc_InsuranceSectorsMember_label_en-US" xlink:label="lab_gbdc_InsuranceSectorsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insurance Sectors [Member] </link:label>

<link:label id="lab_gbdc_InsuranceSectorsMember_documentation_en-US" xlink:label="lab_gbdc_InsuranceSectorsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insurance Sectors </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InsuranceSectorsMember" xlink:href="gbdc-20230930.xsd#gbdc_InsuranceSectorsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InsuranceSectorsMember" xlink:to="lab_gbdc_InsuranceSectorsMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect_bc4ada2e-0447-48ac-b889-b28420525245_terseLabel_en-US" xlink:label="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax reclassification of stockholders' equity in accordance with generally accepted accounting principles </link:label>

<link:label id="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect_label_en-US" xlink:label="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Cuts and Jobs Act, Reclassification from APIC to Retained Earnings, Tax Effect </link:label>

<link:label id="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect_documentation_en-US" xlink:label="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Cuts and Jobs Act, Reclassification from APIC to Retained Earnings, Tax Effect </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:href="gbdc-20230930.xsd#gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:to="lab_gbdc_TaxCutsAndJobsActReclassificationFromAPICToRetainedEarningsTaxEffect" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions_50a4070d-491b-40e3-bf7c-df429bbe58cb_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross additions </link:label>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments in and Advances to Affiliates, at Fair Value, Gross Additions </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions" xlink:to="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockSharesOutstanding_601717fb-b50a-49e9-a8f7-c14271726cc7_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Number of common shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesOutstanding_0bd843ea-2fb1-492b-a36c-44fdc46bb8ce_verboseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common stock, shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesOutstanding_7ee70476-9a74-4f60-a7fd-82628bb916f9_periodStartLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beginning balance (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesOutstanding_d68d96fc-d9fc-4707-8662-b3e0c9ce7ad8_periodEndLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ending balance (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesOutstanding_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Shares, Outstanding </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding" xlink:to="lab_us-gaap_CommonStockSharesOutstanding" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeoMember_terseLabel_en-US" xlink:label="lab_ecd_PeoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO </link:label>

<link:label id="lab_ecd_PeoMember_label_en-US" xlink:label="lab_ecd_PeoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeoMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoMember" xlink:to="lab_ecd_PeoMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProceedsFromNonCashDividends_0d68f48e-7158-46be-ab0e-c6b3f56ed671_terseLabel_en-US" xlink:label="lab_gbdc_ProceedsFromNonCashDividends" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from non-cash dividends </link:label>

<link:label id="lab_gbdc_ProceedsFromNonCashDividends_label_en-US" xlink:label="lab_gbdc_ProceedsFromNonCashDividends" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Non-cash Dividends </link:label>

<link:label id="lab_gbdc_ProceedsFromNonCashDividends_documentation_en-US" xlink:label="lab_gbdc_ProceedsFromNonCashDividends" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Non-cash Dividends </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProceedsFromNonCashDividends" xlink:href="gbdc-20230930.xsd#gbdc_ProceedsFromNonCashDividends"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProceedsFromNonCashDividends" xlink:to="lab_gbdc_ProceedsFromNonCashDividends" xlink:type="arc" order="1"/>

<link:label id="lab_dei_AuditorLocation_1ccf0e31-2942-480b-8142-a66de56de042_terseLabel_en-US" xlink:label="lab_dei_AuditorLocation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auditor Location </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLocation" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AuditorLocation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorLocation" xlink:to="lab_dei_AuditorLocation" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HedgingTransactionsRiskMember_label_en-US" xlink:label="lab_gbdc_HedgingTransactionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hedging Transactions Risk [Member] </link:label>

<link:label id="lab_gbdc_HedgingTransactionsRiskMember_documentation_en-US" xlink:label="lab_gbdc_HedgingTransactionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hedging Transactions Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HedgingTransactionsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_HedgingTransactionsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HedgingTransactionsRiskMember" xlink:to="lab_gbdc_HedgingTransactionsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity1Through3Years_ce660c47-74c5-4123-acb9-1e472f85fc70_terseLabel_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 1 – 3 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity1Through3Years_label_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, 1 Through 3 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity1Through3Years_documentation_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, 1 Through 3 Years </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:href="gbdc-20230930.xsd#gbdc_LongTermDebtGrossMaturity1Through3Years"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:to="lab_gbdc_LongTermDebtGrossMaturity1Through3Years" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_0ca3fa41-1d30-4f5d-9292-86efd77ca58f_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common stock, par value (in dollars per share) </link:label>

<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_3e5ed150-b0a6-43d1-afc7-09b2e5fe563e_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of Stock [Axis] </link:label>

<link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_label_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of Stock [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis" xlink:to="lab_us-gaap_SubsidiarySaleOfStockAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_030734d9-d35c-4712-a3f1-e939eace4437_totalLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net investment income - after tax </link:label>

<link:label id="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_6a660457-131d-4fa7-9469-db4e278bb475_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net investment income after taxes </link:label>

<link:label id="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Operating, after Expense and Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:to="lab_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ProfessionalFees_b31c7ccf-d2f8-4f03-9565-5b2fce21dd81_terseLabel_en-US" xlink:label="lab_us-gaap_ProfessionalFees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Professional fees </link:label>

<link:label id="lab_us-gaap_ProfessionalFees_label_en-US" xlink:label="lab_us-gaap_ProfessionalFees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Professional Fees </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfessionalFees"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfessionalFees" xlink:to="lab_us-gaap_ProfessionalFees" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentAxis_9c3fffd5-af74-450d-837f-78a72157791d_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis" xlink:to="lab_us-gaap_DebtInstrumentAxis" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_OutstandingAggtErrCompAmt_terseLabel_en-US" xlink:label="lab_ecd_OutstandingAggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Outstanding Aggregate Erroneous Compensation Amount </link:label>

<link:label id="lab_ecd_OutstandingAggtErrCompAmt_label_en-US" xlink:label="lab_ecd_OutstandingAggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Outstanding Aggregate Erroneous Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingAggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_OutstandingAggtErrCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OutstandingAggtErrCompAmt" xlink:to="lab_ecd_OutstandingAggtErrCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RepaymentsOfDebt_10d9a002-a7ea-4e4a-904a-8954832cdaa4_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repayments of debt </link:label>

<link:label id="lab_us-gaap_RepaymentsOfDebt_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repayments of Debt </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfDebt" xlink:to="lab_us-gaap_RepaymentsOfDebt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdverseDevelopmentInCreditMarketRiskMember_label_en-US" xlink:label="lab_gbdc_AdverseDevelopmentInCreditMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Development In Credit Market Risk [Member] </link:label>

<link:label id="lab_gbdc_AdverseDevelopmentInCreditMarketRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdverseDevelopmentInCreditMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Development In Credit Market Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdverseDevelopmentInCreditMarketRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdverseDevelopmentInCreditMarketRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdverseDevelopmentInCreditMarketRiskMember" xlink:to="lab_gbdc_AdverseDevelopmentInCreditMarketRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage_612ef926-67c2-4d52-8d9c-a4267df4b7a9_terseLabel_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, non-usage fee, percentage </link:label>

<link:label id="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage_label_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line Of Credit Facility, Non-usage Fee, Percentage </link:label>

<link:label id="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage_documentation_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line Of Credit Facility, Non-usage Fee, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:href="gbdc-20230930.xsd#gbdc_LineOfCreditFacilityNonUsageFeePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:to="lab_gbdc_LineOfCreditFacilityNonUsageFeePercentage" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MeasurementInputTypeDomain_248dbe46-bdd5-455b-8837-89f4a534e783_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input Type [Domain] </link:label>

<link:label id="lab_us-gaap_MeasurementInputTypeDomain_label_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputTypeDomain" xlink:to="lab_us-gaap_MeasurementInputTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_e257d517-d9d0-4f42-b153-a5b027df2f1b_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt and equity securities, unrealized gain (loss) </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_bdc6d35c-8fe7-408a-b95a-9d9db7801f10_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized (appreciation) depreciation on investments </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt and Equity Securities, Unrealized Gain (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:to="lab_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss" xlink:type="arc" order="1"/>

<link:label id="lab_country_DK_c5ee9ae3-e845-4708-bebf-9e3c784feac8_terseLabel_en-US" xlink:label="lab_country_DK" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Denmark </link:label>

<link:label id="lab_country_DK_label_en-US" xlink:label="lab_country_DK" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DENMARK </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_DK" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_DK"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_DK" xlink:to="lab_country_DK" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CreditFacilityAxis_df08bee1-13fc-48e7-9479-e080eb60c614_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility [Axis] </link:label>

<link:label id="lab_us-gaap_CreditFacilityAxis_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityAxis" xlink:to="lab_us-gaap_CreditFacilityAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_2a0bbf7e-fa32-4e62-91d6-73a66d1a1ebb_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Maturities of Long-Term Debt </link:label>

<link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Maturities of Long-Term Debt [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_Liabilities_bd6be6d8-6939-4c2f-af0a-b78c0a6b7310_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Liabilities </link:label>

<link:label id="lab_us-gaap_Liabilities_label_en-US" xlink:label="lab_us-gaap_Liabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Liabilities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities" xlink:to="lab_us-gaap_Liabilities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CreditFacilityJPMMember_label_en-US" xlink:label="lab_gbdc_CreditFacilityJPMMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility JPM [Member] </link:label>

<link:label id="lab_gbdc_CreditFacilityJPMMember_documentation_en-US" xlink:label="lab_gbdc_CreditFacilityJPMMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility JPM </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CreditFacilityJPMMember" xlink:href="gbdc-20230930.xsd#gbdc_CreditFacilityJPMMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CreditFacilityJPMMember" xlink:to="lab_gbdc_CreditFacilityJPMMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets_2b1154d0-28f5-4bfa-be3f-bbeddd02bb60_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of excise tax to average net assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Excise Tax To Average Net Assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Excise Tax To Average Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyExciseTaxToAverageNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:to="lab_gbdc_InvestmentCompanyExciseTaxToAverageNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIncomeMember_d9b2bb46-9d0d-433f-9eb3-442605d94400_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> From net investment income - after tax </link:label>

<link:label id="lab_us-gaap_InvestmentIncomeMember_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeMember" xlink:to="lab_us-gaap_InvestmentIncomeMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable_bc590805-1493-4a8e-82d1-c503d88bee93_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and incentive fees payable </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Management and Incentive Fees Payable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable" xlink:to="lab_us-gaap_IncreaseDecreaseInManagementAndIncentiveFeesPayable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember_label_en-US" xlink:label="lab_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Board Of Director Changes Over Investment Objective Risk [Member] </link:label>

<link:label id="lab_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember_documentation_en-US" xlink:label="lab_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Board Of Director Changes Over Investment Objective Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember" xlink:to="lab_gbdc_BoardOfDirectorChangesOverInvestmentObjectiveRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonRule10b51ArrAdoptedFlag_terseLabel_en-US" xlink:label="lab_ecd_NonRule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Rule 10b5-1 Arrangement Adopted </link:label>

<link:label id="lab_ecd_NonRule10b51ArrAdoptedFlag_label_en-US" xlink:label="lab_ecd_NonRule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Rule 10b5-1 Arrangement Adopted [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonRule10b51ArrAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonRule10b51ArrAdoptedFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonRule10b51ArrAdoptedFlag" xlink:to="lab_ecd_NonRule10b51ArrAdoptedFlag" xlink:type="arc" order="1"/>

<link:label id="lab_country_CA_70460ae3-a549-4bdf-a3bf-8e43f5090716_terseLabel_en-US" xlink:label="lab_country_CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Canada </link:label>

<link:label id="lab_country_CA_label_en-US" xlink:label="lab_country_CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> CANADA </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_CA" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_CA"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_CA" xlink:to="lab_country_CA" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_5b028745-bf97-4076-b120-a2a6b4a34a07_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>

<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyTransactionDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain" xlink:to="lab_us-gaap_RelatedPartyTransactionDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventLineItems_91e56981-14b8-4151-afa1-c44841cd6c75_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event [Line Items] </link:label>

<link:label id="lab_us-gaap_SubsequentEventLineItems_label_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventLineItems" xlink:to="lab_us-gaap_SubsequentEventLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets_95ec9813-1920-4314-9692-c6def8eb25e4_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of net expenses (without incentive fees) to average net assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Net Expenses Before Incentive Fees To Average Net Assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Net Expenses Before Incentive Fees To Average Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:to="lab_gbdc_InvestmentCompanyNetExpensesBeforeIncentiveFeesToAverageNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts_0e2f9a4c-f149-492f-8b37-8059685f4f58_terseLabel_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest income, operating, accretion of discounts </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts_label_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Accretion Of Discounts </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts_documentation_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Accretion Of Discounts </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:href="gbdc-20230930.xsd#gbdc_InterestIncomeOperatingAccretionOfDiscounts"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:to="lab_gbdc_InterestIncomeOperatingAccretionOfDiscounts" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_a7a43387-5c5a-4c8d-938b-114f974e8040_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> General and administrative expenses </link:label>

<link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_label_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> General and Administrative Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeneralAndAdministrativeExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralAndAdministrativeExpense" xlink:to="lab_us-gaap_GeneralAndAdministrativeExpense" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LoansAssumed1_f6c0e3db-f31f-4063-a0d3-822a961af1f7_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAssumed1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from issuance of Class A-2-R GCIC 2018 Notes </link:label>

<link:label id="lab_us-gaap_LoansAssumed1_label_en-US" xlink:label="lab_us-gaap_LoansAssumed1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loans Assumed </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAssumed1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LoansAssumed1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAssumed1" xlink:to="lab_us-gaap_LoansAssumed1" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_f2f5e91b-55d1-4fbc-b499-51bee6513a05_terseLabel_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) on investments </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_label_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, And Foreign Currency Transaction Price Change, Operating, Before Tax [Member] </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_documentation_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, And Foreign Currency Transaction Price Change, Operating, Before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:href="gbdc-20230930.xsd#gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:to="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FoodProductsSectorMember_28665770-2b28-4fa5-8870-858ca22b6aba_terseLabel_en-US" xlink:label="lab_gbdc_FoodProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food Products </link:label>

<link:label id="lab_gbdc_FoodProductsSectorMember_label_en-US" xlink:label="lab_gbdc_FoodProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food Products Sector [Member] </link:label>

<link:label id="lab_gbdc_FoodProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_FoodProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FoodProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_FoodProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FoodProductsSectorMember" xlink:to="lab_gbdc_FoodProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscTableTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Awards Close in Time to MNPI Disclosures, Table </link:label>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscTableTextBlock_label_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Awards Close in Time to MNPI Disclosures [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardsCloseToMnpiDiscTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:to="lab_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassC12018NoteMember_96ca9a7c-e8ec-4e13-9ecb-f506a697f129_terseLabel_en-US" xlink:label="lab_gbdc_ClassC12018NoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C-1 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassC12018NoteMember_label_en-US" xlink:label="lab_gbdc_ClassC12018NoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C-1 2018 Note [Member] </link:label>

<link:label id="lab_gbdc_ClassC12018NoteMember_documentation_en-US" xlink:label="lab_gbdc_ClassC12018NoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C-1 2018 Note </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassC12018NoteMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassC12018NoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassC12018NoteMember" xlink:to="lab_gbdc_ClassC12018NoteMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract_7fd4b64a-d00a-4aac-89db-545ead1d2f24_negatedTerseLabel_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash collateral held at broker for forward currency contracts </link:label>

<link:label id="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract_label_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) In Deposit, Derivative Contract </link:label>

<link:label id="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract_documentation_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) In Deposit, Derivative Contract </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:href="gbdc-20230930.xsd#gbdc_IncreaseDecreaseInDepositDerivativeContract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:to="lab_gbdc_IncreaseDecreaseInDepositDerivativeContract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquitySecuritiesMember_f057c770-9f11-48aa-88de-f4313740e906_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Investments </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesMember_bd9c31d9-5150-4d8c-a111-955eb7db8e96_verboseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesMember_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Securities [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquitySecuritiesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesMember" xlink:to="lab_us-gaap_EquitySecuritiesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_60ad180d-40ae-4161-a1f3-068cfbedf9ad_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Supplemental disclosure of cash flow information: </link:label>

<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuritiesInvolveInAverageDegreeRiskMember_label_en-US" xlink:label="lab_gbdc_SecuritiesInvolveInAverageDegreeRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securities Involve In Average Degree Risk [Member] </link:label>

<link:label id="lab_gbdc_SecuritiesInvolveInAverageDegreeRiskMember_documentation_en-US" xlink:label="lab_gbdc_SecuritiesInvolveInAverageDegreeRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securities Involve In Average Degree Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuritiesInvolveInAverageDegreeRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuritiesInvolveInAverageDegreeRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuritiesInvolveInAverageDegreeRiskMember" xlink:to="lab_gbdc_SecuritiesInvolveInAverageDegreeRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_265548ba-d861-4b04-a574-4c569954bad6_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized and unrealized loss, investment and derivative, operating, tax (benefit) expense </link:label>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_label_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:to="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_8151a350-9a32-421f-abe0-f97d10a6187e_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repurchases of common stock, net of commission costs (in shares) </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_929ca16a-16f9-4643-8546-f3ce9cafebf3_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock repurchased during period, shares (in shares) </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_ebba6c1b-61fd-41d7-9d20-37111b7c3a2a_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Number of Shares Repurchased (in shares) </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchased During Period, Shares </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="lab_us-gaap_StockRepurchasedDuringPeriodShares" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_98064c1a-e074-4dec-9d7d-ec1cfd83d3a2_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration risk, percentage </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskPercentage1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity_1c3e4a3e-77d9-425c-972e-bfa771ce0d09_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fundings of investments </link:label>

<link:label id="lab_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity_label_en-US" xlink:label="lab_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payment for Purchase, Investment, Operating Activity </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity" xlink:to="lab_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization_c24a6b63-9791-44c8-980a-aea20bb2585c_totalLabel_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating, Net Of Amortization </link:label>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization_label_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating, Net Of Amortization </link:label>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization_documentation_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating, Net Of Amortization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:href="gbdc-20230930.xsd#gbdc_GrossInvestmentIncomeOperatingNetOfAmortization"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:to="lab_gbdc_GrossInvestmentIncomeOperatingNetOfAmortization" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_379e3c35-32f1-4247-bf5b-1da4b52eae88_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LongTermDebtAverageAmountOutstanding_6e03255d-28fc-4590-8857-81de766530ea_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average outstanding balance </link:label>

<link:label id="lab_us-gaap_LongTermDebtAverageAmountOutstanding_300f70fe-1cac-4a4b-80a0-684ecb36458a_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average debt outstanding </link:label>

<link:label id="lab_us-gaap_LongTermDebtAverageAmountOutstanding_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Average Amount Outstanding </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtAverageAmountOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:to="lab_us-gaap_LongTermDebtAverageAmountOutstanding" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember_label_en-US" xlink:label="lab_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> No Assurance Over Replicate Historical Results Risk [Member] </link:label>

<link:label id="lab_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember_documentation_en-US" xlink:label="lab_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> No Assurance Over Replicate Historical Results Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember" xlink:to="lab_gbdc_NoAssuranceOverReplicateHistoricalResultsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_58cb8658-8ede-4e26-9b32-303d82145d57_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net cash provided by (used in) operating activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_Notes2026Member_label_en-US" xlink:label="lab_gbdc_Notes2026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2026 [Member] </link:label>

<link:label id="lab_gbdc_Notes2026Member_documentation_en-US" xlink:label="lab_gbdc_Notes2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2026 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_Notes2026Member" xlink:href="gbdc-20230930.xsd#gbdc_Notes2026Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_Notes2026Member" xlink:to="lab_gbdc_Notes2026Member" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementClassOfStockAxis_7b153408-ed0d-46b4-8bb5-6d5e90f50d4a_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class of Stock [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementClassOfStockAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis" xlink:to="lab_us-gaap_StatementClassOfStockAxis" xlink:type="arc" order="1"/>

<link:label id="lab_country_IL_3cef858c-c9a1-44a7-b338-d9c25af165c7_terseLabel_en-US" xlink:label="lab_country_IL" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Israel </link:label>

<link:label id="lab_country_IL_label_en-US" xlink:label="lab_country_IL" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> ISRAEL </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_IL" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_IL"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_IL" xlink:to="lab_country_IL" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ErrCompRecoveryTable_terseLabel_en-US" xlink:label="lab_ecd_ErrCompRecoveryTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Erroneously Awarded Compensation Recovery </link:label>

<link:label id="lab_ecd_ErrCompRecoveryTable_label_en-US" xlink:label="lab_ecd_ErrCompRecoveryTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Erroneously Awarded Compensation Recovery [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ErrCompRecoveryTable" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ErrCompRecoveryTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ErrCompRecoveryTable" xlink:to="lab_ecd_ErrCompRecoveryTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuritizationIssuersInterestRiskMember_label_en-US" xlink:label="lab_gbdc_SecuritizationIssuersInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuers Interest Risk [Member] </link:label>

<link:label id="lab_gbdc_SecuritizationIssuersInterestRiskMember_documentation_en-US" xlink:label="lab_gbdc_SecuritizationIssuersInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuers Interest Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuritizationIssuersInterestRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuritizationIssuersInterestRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuritizationIssuersInterestRiskMember" xlink:to="lab_gbdc_SecuritizationIssuersInterestRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgHowMnpiCnsdrdTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing, How MNPI Considered </link:label>

<link:label id="lab_ecd_AwardTmgHowMnpiCnsdrdTextBlock_label_en-US" xlink:label="lab_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing, How MNPI Considered [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgHowMnpiCnsdrdTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:to="lab_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook_22699059-122d-4c47-bba9-942e667e320b_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other income for tax but not book </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Income For Tax But Not Book </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Income For Tax But Not Book </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:to="lab_gbdc_InvestmentCompanyOtherIncomeForTaxButNotBook" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember_label_en-US" xlink:label="lab_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Default On Obligation To Pay Other Indebtedness Risk [Member] </link:label>

<link:label id="lab_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember_documentation_en-US" xlink:label="lab_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Default On Obligation To Pay Other Indebtedness Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember" xlink:to="lab_gbdc_DefaultOnObligationToPayOtherIndebtednessRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember_label_en-US" xlink:label="lab_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capital Markets Disruption And Economic Uncertainty Risk [Member] </link:label>

<link:label id="lab_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember_documentation_en-US" xlink:label="lab_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capital Markets Disruption And Economic Uncertainty Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember" xlink:to="lab_gbdc_CapitalMarketsDisruptionAndEconomicUncertaintyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends_a5bdac82-7629-4a75-b7f6-3e584c377632_negatedTerseLabel_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from non-cash dividends </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends_label_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Non-Cash Dividends </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends_documentation_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Non-Cash Dividends </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:href="gbdc-20230930.xsd#gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:to="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNonCashDividends" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashHeldInForeignCurrency_7c948013-b270-4f82-a0b2-f8d54116d162_terseLabel_en-US" xlink:label="lab_us-gaap_CashHeldInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign currencies (cost of $4,540 and $7,021, respectively) </link:label>

<link:label id="lab_us-gaap_CashHeldInForeignCurrency_3480c83c-15b6-4fbe-afc1-29559c66d0fa_verboseLabel_en-US" xlink:label="lab_us-gaap_CashHeldInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign currencies (cost of $4,540 and $7,021, respectively) </link:label>

<link:label id="lab_us-gaap_CashHeldInForeignCurrency_label_en-US" xlink:label="lab_us-gaap_CashHeldInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, Held in Foreign Currency </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashHeldInForeignCurrency" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashHeldInForeignCurrency"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashHeldInForeignCurrency" xlink:to="lab_us-gaap_CashHeldInForeignCurrency" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember_label_en-US" xlink:label="lab_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Price Declines And Illiquidity In The Corporate Debt Markets Risk [Member] </link:label>

<link:label id="lab_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember_documentation_en-US" xlink:label="lab_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Price Declines And Illiquidity In The Corporate Debt Markets Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember" xlink:to="lab_gbdc_PriceDeclinesAndIlliquidityInTheCorporateDebtMarketsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FeeIncome_048e3cde-fef9-4bf2-b5fc-5ca9495bc50a_terseLabel_en-US" xlink:label="lab_us-gaap_FeeIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fee income </link:label>

<link:label id="lab_us-gaap_FeeIncome_label_en-US" xlink:label="lab_us-gaap_FeeIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fee Income </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FeeIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FeeIncome"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FeeIncome" xlink:to="lab_us-gaap_FeeIncome" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_2375de70-9dd2-402c-a976-5032b2bc5fbd_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restricted cash and cash equivalents </link:label>

<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restricted Cash and Cash Equivalents </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalents" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalents" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_4fec4e91-db3e-4699-819c-c2434e68c521_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, commitment fee amount </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of Credit Facility, Commitment Fee Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityCommitmentFeeAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:to="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdjustmentToDistributableEarningsLoss_33e7888d-1ff0-4ac0-8c47-fcde14f61492_terseLabel_en-US" xlink:label="lab_gbdc_AdjustmentToDistributableEarningsLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (decrease) in Distributable Earnings (Losses) </link:label>

<link:label id="lab_gbdc_AdjustmentToDistributableEarningsLoss_label_en-US" xlink:label="lab_gbdc_AdjustmentToDistributableEarningsLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment To Distributable Earnings (Loss) </link:label>

<link:label id="lab_gbdc_AdjustmentToDistributableEarningsLoss_documentation_en-US" xlink:label="lab_gbdc_AdjustmentToDistributableEarningsLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment To Distributable Earnings (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdjustmentToDistributableEarningsLoss" xlink:href="gbdc-20230930.xsd#gbdc_AdjustmentToDistributableEarningsLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdjustmentToDistributableEarningsLoss" xlink:to="lab_gbdc_AdjustmentToDistributableEarningsLoss" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LoansRedeemed_dfb952bb-15f1-463a-9c91-296d5f2722b0_terseLabel_en-US" xlink:label="lab_gbdc_LoansRedeemed" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Redemptions of Class A-2 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_LoansRedeemed_label_en-US" xlink:label="lab_gbdc_LoansRedeemed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loans Redeemed </link:label>

<link:label id="lab_gbdc_LoansRedeemed_documentation_en-US" xlink:label="lab_gbdc_LoansRedeemed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loans Redeemed </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LoansRedeemed" xlink:href="gbdc-20230930.xsd#gbdc_LoansRedeemed"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LoansRedeemed" xlink:to="lab_gbdc_LoansRedeemed" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ActiveTradingMarketConflictRiskMember_label_en-US" xlink:label="lab_gbdc_ActiveTradingMarketConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Active Trading Market Conflict Risk [Member] </link:label>

<link:label id="lab_gbdc_ActiveTradingMarketConflictRiskMember_documentation_en-US" xlink:label="lab_gbdc_ActiveTradingMarketConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Active Trading Market Conflict Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ActiveTradingMarketConflictRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ActiveTradingMarketConflictRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ActiveTradingMarketConflictRiskMember" xlink:to="lab_gbdc_ActiveTradingMarketConflictRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAAAAClassA2018NotesMember_e1e7355c-d721-4dc3-bf71-cdcd0764d8e5_terseLabel_en-US" xlink:label="lab_gbdc_AAAAAAClassA2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A 2018 Notes </link:label>

<link:label id="lab_gbdc_AAAAAAClassA2018NotesMember_label_en-US" xlink:label="lab_gbdc_AAAAAAClassA2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAAAAAClassA2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAAAAAClassA2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAAAAClassA2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAAAAClassA2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAAAAClassA2018NotesMember" xlink:to="lab_gbdc_AAAAAAClassA2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember_label_en-US" xlink:label="lab_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Structurally Subordinated Unsecured Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Structurally Subordinated Unsecured Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_StructurallySubordinatedUnsecuredNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember" xlink:to="lab_gbdc_StructurallySubordinatedUnsecuredNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PreferredStockSharesIssued_6c3cf81f-d81e-4c07-b0d1-c1e3fd8292f3_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred stock, shares issued (in shares) </link:label>

<link:label id="lab_us-gaap_PreferredStockSharesIssued_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred Stock, Shares Issued </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockSharesIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesIssued" xlink:to="lab_us-gaap_PreferredStockSharesIssued" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2024NotesMember_4173e274-e7e9-477a-8ef8-091a5bff5b5b_terseLabel_en-US" xlink:label="lab_gbdc_A2024NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2024 Notes </link:label>

<link:label id="lab_gbdc_A2024NotesMember_label_en-US" xlink:label="lab_gbdc_A2024NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2024 Notes [Member] </link:label>

<link:label id="lab_gbdc_A2024NotesMember_documentation_en-US" xlink:label="lab_gbdc_A2024NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2024 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2024NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_A2024NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2024NotesMember" xlink:to="lab_gbdc_A2024NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityEmergingGrowthCompany_0a19f009-b49b-45a4-a685-9fc4a0b1a623_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Emerging Growth Company </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany" xlink:to="lab_dei_EntityEmergingGrowthCompany" xlink:type="arc" order="1"/>

<link:label id="lab_country_GB_01db02d6-5d5a-46b3-a705-ac23b566e93e_terseLabel_en-US" xlink:label="lab_country_GB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> United Kingdom </link:label>

<link:label id="lab_country_GB_label_en-US" xlink:label="lab_country_GB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> UNITED KINGDOM </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_GB" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_GB"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_GB" xlink:to="lab_country_GB" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DifficultySourcingInvestmentOpportunityRiskMember_label_en-US" xlink:label="lab_gbdc_DifficultySourcingInvestmentOpportunityRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Difficulty Sourcing Investment Opportunity Risk [Member] </link:label>

<link:label id="lab_gbdc_DifficultySourcingInvestmentOpportunityRiskMember_documentation_en-US" xlink:label="lab_gbdc_DifficultySourcingInvestmentOpportunityRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Difficulty Sourcing Investment Opportunity Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DifficultySourcingInvestmentOpportunityRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DifficultySourcingInvestmentOpportunityRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DifficultySourcingInvestmentOpportunityRiskMember" xlink:to="lab_gbdc_DifficultySourcingInvestmentOpportunityRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PaperForestProductsSectorMember_da74e675-4d47-4e84-ad19-d9acff72f3a5_terseLabel_en-US" xlink:label="lab_gbdc_PaperForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper & Forest Products </link:label>

<link:label id="lab_gbdc_PaperForestProductsSectorMember_label_en-US" xlink:label="lab_gbdc_PaperForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper & Forest Products Sector [Member] </link:label>

<link:label id="lab_gbdc_PaperForestProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_PaperForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper & Forest Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PaperForestProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_PaperForestProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PaperForestProductsSectorMember" xlink:to="lab_gbdc_PaperForestProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OfferingCostsPartnershipInterests_e0823bd2-7b9a-4228-80e3-b602612915e4_terseLabel_en-US" xlink:label="lab_us-gaap_OfferingCostsPartnershipInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Offering costs, partnership interests </link:label>

<link:label id="lab_us-gaap_OfferingCostsPartnershipInterests_label_en-US" xlink:label="lab_us-gaap_OfferingCostsPartnershipInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Offering Costs, Partnership Interests </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OfferingCostsPartnershipInterests" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OfferingCostsPartnershipInterests"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OfferingCostsPartnershipInterests" xlink:to="lab_us-gaap_OfferingCostsPartnershipInterests" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets_576f9f87-919a-44da-9cee-a765aa546ce8_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ratio of total expenses (without waiver) to average net assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Total Expenses To Average Net Assets </link:label>

<link:label id="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Total Expenses To Average Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:to="lab_gbdc_InvestmentCompanyTotalExpensesToAverageNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InternetCatalogRetailSectorMember_eec75c1e-2fb3-4d92-9964-de95a8a3a824_terseLabel_en-US" xlink:label="lab_gbdc_InternetCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet & Catalog Retail </link:label>

<link:label id="lab_gbdc_InternetCatalogRetailSectorMember_label_en-US" xlink:label="lab_gbdc_InternetCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet & Catalog Retail Sector [Member] </link:label>

<link:label id="lab_gbdc_InternetCatalogRetailSectorMember_documentation_en-US" xlink:label="lab_gbdc_InternetCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet & Catalog Retail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InternetCatalogRetailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_InternetCatalogRetailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InternetCatalogRetailSectorMember" xlink:to="lab_gbdc_InternetCatalogRetailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashHeldInForeignCurrencyAcquisitionCost_3b25dc25-efea-4571-8d5c-23145e1b2fc7_terseLabel_en-US" xlink:label="lab_us-gaap_CashHeldInForeignCurrencyAcquisitionCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign currencies, cost </link:label>

<link:label id="lab_us-gaap_CashHeldInForeignCurrencyAcquisitionCost_label_en-US" xlink:label="lab_us-gaap_CashHeldInForeignCurrencyAcquisitionCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, Held in Foreign Currency, Acquisition Cost </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashHeldInForeignCurrencyAcquisitionCost" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashHeldInForeignCurrencyAcquisitionCost"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashHeldInForeignCurrencyAcquisitionCost" xlink:to="lab_us-gaap_CashHeldInForeignCurrencyAcquisitionCost" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InternetAndCatalogRetailSectorMember_7481b5c4-8f03-4e63-9748-84d7352737d7_terseLabel_en-US" xlink:label="lab_gbdc_InternetAndCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet and Catalog Retail </link:label>

<link:label id="lab_gbdc_InternetAndCatalogRetailSectorMember_label_en-US" xlink:label="lab_gbdc_InternetAndCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet and Catalog Retail Sector [Member] </link:label>

<link:label id="lab_gbdc_InternetAndCatalogRetailSectorMember_documentation_en-US" xlink:label="lab_gbdc_InternetAndCatalogRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Internet and Catalog Retail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InternetAndCatalogRetailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_InternetAndCatalogRetailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InternetAndCatalogRetailSectorMember" xlink:to="lab_gbdc_InternetAndCatalogRetailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIdentifierAxis_6057e7d8-9fbb-4f60-ab4d-ee686f986b54_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIdentifierAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Identifier [Axis] </link:label>

<link:label id="lab_us-gaap_InvestmentIdentifierAxis_label_en-US" xlink:label="lab_us-gaap_InvestmentIdentifierAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Identifier [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIdentifierAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIdentifierAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIdentifierAxis" xlink:to="lab_us-gaap_InvestmentIdentifierAxis" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PvpTableTextBlock_terseLabel_en-US" xlink:label="lab_ecd_PvpTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pay vs Performance Disclosure, Table </link:label>

<link:label id="lab_ecd_PvpTableTextBlock_label_en-US" xlink:label="lab_ecd_PvpTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pay vs Performance [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PvpTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PvpTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PvpTableTextBlock" xlink:to="lab_ecd_PvpTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrIndTitle_terseLabel_en-US" xlink:label="lab_ecd_TrdArrIndTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Title </link:label>

<link:label id="lab_ecd_TrdArrIndTitle_label_en-US" xlink:label="lab_ecd_TrdArrIndTitle" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement, Individual Title </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrIndTitle" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrIndTitle"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrIndTitle" xlink:to="lab_ecd_TrdArrIndTitle" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MachinerySectorMember_a859e9bd-ce2c-4151-81eb-4c73f9113b18_terseLabel_en-US" xlink:label="lab_gbdc_MachinerySectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Machinery </link:label>

<link:label id="lab_gbdc_MachinerySectorMember_label_en-US" xlink:label="lab_gbdc_MachinerySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Machinery Sector [Member] </link:label>

<link:label id="lab_gbdc_MachinerySectorMember_documentation_en-US" xlink:label="lab_gbdc_MachinerySectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Machinery Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MachinerySectorMember" xlink:href="gbdc-20230930.xsd#gbdc_MachinerySectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MachinerySectorMember" xlink:to="lab_gbdc_MachinerySectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockMember_ac5b65d6-1f66-4a51-aef1-8e6bca7086b8_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock </link:label>

<link:label id="lab_us-gaap_CommonStockMember_label_en-US" xlink:label="lab_us-gaap_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember" xlink:to="lab_us-gaap_CommonStockMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_IndividualAxis_terseLabel_en-US" xlink:label="lab_ecd_IndividualAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Individual: </link:label>

<link:label id="lab_ecd_IndividualAxis_label_en-US" xlink:label="lab_ecd_IndividualAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Individual [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_IndividualAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_IndividualAxis" xlink:to="lab_ecd_IndividualAxis" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityAddressPostalZipCode_4ba7deed-b6ee-46c0-8d7f-e51a181bd333_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Address, Postal Zip Code </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressPostalZipCode" xlink:to="lab_dei_EntityAddressPostalZipCode" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncomeStatementLocationDomain_a3c8a1ff-2383-4ec6-bf29-60246636b04e_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Statement Location [Domain] </link:label>

<link:label id="lab_us-gaap_IncomeStatementLocationDomain_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Statement Location [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationDomain" xlink:to="lab_us-gaap_IncomeStatementLocationDomain" xlink:type="arc" order="1"/>

<link:label id="lab_country_NL_904c4c51-0af6-4e13-82cc-7c1a281fe721_terseLabel_en-US" xlink:label="lab_country_NL" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Netherlands </link:label>

<link:label id="lab_country_NL_label_en-US" xlink:label="lab_country_NL" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> NETHERLANDS </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_NL" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_NL"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_NL" xlink:to="lab_country_NL" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritiesSecondLienMember_a5fb651b-ecce-46a9-bc4f-b6ff10749d22_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritiesSecondLienMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Second lien </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSecondLienMember_label_en-US" xlink:label="lab_gbdc_DebtSecuritiesSecondLienMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Second Lien [Member] </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSecondLienMember_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritiesSecondLienMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Second Lien </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritiesSecondLienMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritiesSecondLienMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritiesSecondLienMember" xlink:to="lab_gbdc_DebtSecuritiesSecondLienMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract_183e1a82-d9e9-4648-9ea7-1c1ce31e6cb0_terseLabel_en-US" xlink:label="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changes in operating assets and liabilities: </link:label>

<link:label id="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract_label_en-US" xlink:label="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changes In Operating Assets And Liabilities [Abstract] </link:label>

<link:label id="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract_documentation_en-US" xlink:label="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changes In Operating Assets And Liabilities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:href="gbdc-20230930.xsd#gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:to="lab_gbdc_ChangesInOperatingAssetsAndLiabilitiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtWeightedAverageInterestRate_9cfa2fbf-6874-4aab-9097-e5ea4be32823_terseLabel_en-US" xlink:label="lab_us-gaap_DebtWeightedAverageInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average stated interest rate </link:label>

<link:label id="lab_us-gaap_DebtWeightedAverageInterestRate_label_en-US" xlink:label="lab_us-gaap_DebtWeightedAverageInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt, Weighted Average Interest Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtWeightedAverageInterestRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtWeightedAverageInterestRate" xlink:to="lab_us-gaap_DebtWeightedAverageInterestRate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_66c45a19-3c93-4499-89a6-530cfeedf817_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized appreciation on forward currency contracts </link:label>

<link:label id="lab_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:to="lab_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilities_f4a5fa76-9546-4f35-955a-4a62188bc3b3_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounts payable and other liabilities </link:label>

<link:label id="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilities_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounts Payable and Other Accrued Liabilities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:to="lab_us-gaap_AccountsPayableAndOtherAccruedLiabilities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SarbanesOxleyActComplianceRiskMember_label_en-US" xlink:label="lab_gbdc_SarbanesOxleyActComplianceRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sarbanes-Oxley Act Compliance Risk [Member] </link:label>

<link:label id="lab_gbdc_SarbanesOxleyActComplianceRiskMember_documentation_en-US" xlink:label="lab_gbdc_SarbanesOxleyActComplianceRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sarbanes-Oxley Act Compliance Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SarbanesOxleyActComplianceRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SarbanesOxleyActComplianceRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SarbanesOxleyActComplianceRiskMember" xlink:to="lab_gbdc_SarbanesOxleyActComplianceRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_srt_MinimumMember_8f86cd85-8568-47ab-8fa3-77255d0e0e38_terseLabel_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Minimum </link:label>

<link:label id="lab_srt_MinimumMember_label_en-US" xlink:label="lab_srt_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Minimum [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember" xlink:to="lab_srt_MinimumMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassB2018NoteMember_f215224d-7b67-4117-b7c5-bbab75afc3a9_terseLabel_en-US" xlink:label="lab_gbdc_ClassB2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassB2018NoteMember_label_en-US" xlink:label="lab_gbdc_ClassB2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B 2018 Note [Member] </link:label>

<link:label id="lab_gbdc_ClassB2018NoteMember_documentation_en-US" xlink:label="lab_gbdc_ClassB2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B 2018 Note </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassB2018NoteMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassB2018NoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassB2018NoteMember" xlink:to="lab_gbdc_ClassB2018NoteMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfCashFlowsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AssetsAbstract_5e949687-bfbd-43f6-b684-37394c58f811_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assets </link:label>

<link:label id="lab_us-gaap_AssetsAbstract_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assets [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="lab_us-gaap_AssetsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgMnpiDiscTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing MNPI Disclosure </link:label>

<link:label id="lab_ecd_AwardTmgMnpiDiscTextBlock_label_en-US" xlink:label="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing MNPI Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgMnpiDiscTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:to="lab_ecd_AwardTmgMnpiDiscTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_bc91a12a-eb09-4fd2-802a-f3c4f7be7ae6_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Borrowings on debt </link:label>

<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from Issuance of Long-Term Debt </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember_703260b2-5e65-4105-9913-b65787ec7e1e_terseLabel_en-US" xlink:label="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Equipment and Supplies </link:label>

<link:label id="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember_label_en-US" xlink:label="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Equipment And Supplies Sector [Member] </link:label>

<link:label id="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember_documentation_en-US" xlink:label="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Equipment And Supplies Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HealthcareEquipmentAndSuppliesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:to="lab_gbdc_HealthcareEquipmentAndSuppliesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_6f858414-58cd-4ecb-bb27-3ef5b4ed411f_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Forward Currency Contract, Fair Value </link:label>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:to="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember_27004e15-6384-4022-a5f5-d7e03484f3cb_terseLabel_en-US" xlink:label="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage & Peripherals </link:label>

<link:label id="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember_label_en-US" xlink:label="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage & Peripherals Sector [Member] </link:label>

<link:label id="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember_documentation_en-US" xlink:label="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage & Peripherals Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_TechnologyHardwareStoragePeripheralsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:to="lab_gbdc_TechnologyHardwareStoragePeripheralsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LiabilitiesAbstract_8e180216-d1fb-4cb1-924a-ea1bf23b6e78_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Liabilities </link:label>

<link:label id="lab_us-gaap_LiabilitiesAbstract_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Liabilities [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="lab_us-gaap_LiabilitiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember_label_en-US" xlink:label="lab_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scope Of Investment Availability limitation Risk [Member] </link:label>

<link:label id="lab_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember_documentation_en-US" xlink:label="lab_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scope Of Investment Availability limitation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember" xlink:to="lab_gbdc_ScopeOfInvestmentAvailabilityLimitationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years_922bde34-6282-49d6-8822-928a477fecfc_terseLabel_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> More Than 5 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years_label_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, More Than 5 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years_documentation_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, More Than 5 Years </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:href="gbdc-20230930.xsd#gbdc_LongTermDebtGrossMaturityMoreThan5Years"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:to="lab_gbdc_LongTermDebtGrossMaturityMoreThan5Years" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsRollForward_6b35794d-77f9-459b-a46e-7da824b70b41_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Roll Forward] </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsRollForward_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Roll Forward] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialHighlightsRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialHighlightsRollForward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialHighlightsRollForward" xlink:to="lab_us-gaap_InvestmentCompanyFinancialHighlightsRollForward" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_7c27a39f-5b2b-486a-921f-0e97acae69c6_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net cash provided by (used in) financing activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PerCommonShareDataAbstract_79f4ff9f-39d2-40cf-bda6-11e55f67b45a_terseLabel_en-US" xlink:label="lab_gbdc_PerCommonShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Per Common Share Data </link:label>

<link:label id="lab_gbdc_PerCommonShareDataAbstract_label_en-US" xlink:label="lab_gbdc_PerCommonShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Per Common Share Data [Abstract] </link:label>

<link:label id="lab_gbdc_PerCommonShareDataAbstract_documentation_en-US" xlink:label="lab_gbdc_PerCommonShareDataAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Per Common Share Data </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PerCommonShareDataAbstract" xlink:href="gbdc-20230930.xsd#gbdc_PerCommonShareDataAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PerCommonShareDataAbstract" xlink:to="lab_gbdc_PerCommonShareDataAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SBICVIMember_5d05cf8e-7697-466f-ba28-f0bd9ae31665_terseLabel_en-US" xlink:label="lab_gbdc_SBICVIMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC VI </link:label>

<link:label id="lab_gbdc_SBICVIMember_label_en-US" xlink:label="lab_gbdc_SBICVIMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC VI [Member] </link:label>

<link:label id="lab_gbdc_SBICVIMember_documentation_en-US" xlink:label="lab_gbdc_SBICVIMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC VI </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SBICVIMember" xlink:href="gbdc-20230930.xsd#gbdc_SBICVIMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SBICVIMember" xlink:to="lab_gbdc_SBICVIMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_165570c3-6a53-4b94-9d27-a3598c082ff3_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commitments and Contingencies </link:label>

<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RetainedEarningsMember_42037a1b-f23e-4426-a1fc-5b2be1308759_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributable Earnings (Losses) </link:label>

<link:label id="lab_us-gaap_RetainedEarningsMember_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Retained Earnings [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsMember" xlink:to="lab_us-gaap_RetainedEarningsMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AdjToNonPeoNeoCompFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Non-PEO NEO Compensation Footnote </link:label>

<link:label id="lab_ecd_AdjToNonPeoNeoCompFnTextBlock_label_en-US" xlink:label="lab_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Non-PEO NEO Compensation Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AdjToNonPeoNeoCompFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:to="lab_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EarningsPerShareBasic_a80fc94c-7825-4d26-a09b-bc774a1b2576_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basic earnings per common share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_EarningsPerShareBasic_cfe492ae-ace9-4639-bdc8-36b620c7b4b6_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basic earnings per share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_EarningsPerShareBasic_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings Per Share, Basic </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareBasic"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic" xlink:to="lab_us-gaap_EarningsPerShareBasic" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AccountingPoliciesAbstract_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounting Policies [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountingPoliciesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract" xlink:to="lab_us-gaap_AccountingPoliciesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_0c75d273-03bf-490b-b070-35902f899a48_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of Stock [Domain] </link:label>

<link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of Stock [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="lab_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ErrCompAnalysisTextBlock_terseLabel_en-US" xlink:label="lab_ecd_ErrCompAnalysisTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Erroneous Compensation Analysis </link:label>

<link:label id="lab_ecd_ErrCompAnalysisTextBlock_label_en-US" xlink:label="lab_ecd_ErrCompAnalysisTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Erroneous Compensation Analysis [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ErrCompAnalysisTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ErrCompAnalysisTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ErrCompAnalysisTextBlock" xlink:to="lab_ecd_ErrCompAnalysisTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentAffiliatedIssuerControlledMember_83d6dec9-8726-4240-93e2-887e3c89c866_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentAffiliatedIssuerControlledMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Controlled affiliate company investments </link:label>

<link:label id="lab_us-gaap_InvestmentAffiliatedIssuerControlledMember_label_en-US" xlink:label="lab_us-gaap_InvestmentAffiliatedIssuerControlledMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Affiliated Issuer, Controlled [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentAffiliatedIssuerControlledMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentAffiliatedIssuerControlledMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentAffiliatedIssuerControlledMember" xlink:to="lab_us-gaap_InvestmentAffiliatedIssuerControlledMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_dfe44c8b-5c3c-4b7b-a493-702f21bd34c8_terseLabel_en-US" xlink:label="lab_us-gaap_EquityInterestIssuedOrIssuableTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Interest Issued or Issuable, Type [Domain] </link:label>

<link:label id="lab_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_label_en-US" xlink:label="lab_us-gaap_EquityInterestIssuedOrIssuableTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Interest Issued or Issuable, Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain" xlink:to="lab_us-gaap_EquityInterestIssuedOrIssuableTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_country_LU_0864ba58-0d1b-4445-9f20-a871f49c43e7_terseLabel_en-US" xlink:label="lab_country_LU" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Luxembourg </link:label>

<link:label id="lab_country_LU_label_en-US" xlink:label="lab_country_LU" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> LUXEMBOURG </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_LU" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_LU"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_LU" xlink:to="lab_country_LU" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentInterestRatePaidInKind_3078aaea-114d-4ae5-9ea9-a94a9cde5e25_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentInterestRatePaidInKind" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, interest rate, paid in kind </link:label>

<link:label id="lab_us-gaap_InvestmentInterestRatePaidInKind_label_en-US" xlink:label="lab_us-gaap_InvestmentInterestRatePaidInKind" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Interest Rate, Paid in Kind </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentInterestRatePaidInKind" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentInterestRatePaidInKind"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentInterestRatePaidInKind" xlink:to="lab_us-gaap_InvestmentInterestRatePaidInKind" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockIssued1_2ec91f18-b521-40d7-b857-a8bb032ec567_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssued1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock issued in connection with dividend reinvestment plan </link:label>

<link:label id="lab_us-gaap_StockIssued1_label_en-US" xlink:label="lab_us-gaap_StockIssued1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssued1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssued1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssued1" xlink:to="lab_us-gaap_StockIssued1" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_bca0927d-60e0-4b4c-9b3e-72584fcc5e39_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Consolidation </link:label>

<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Consolidation, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConsolidationPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_67ce43e2-33bc-4ab6-97a7-c640238ba808_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (decrease) in Paid in Capital in Excess of Par </link:label>

<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:to="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash_c4ce9708-da8d-4f3f-8b5a-0bcf803b40d5_terseLabel_en-US" xlink:label="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest and fee income </link:label>

<link:label id="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash_label_en-US" xlink:label="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest And Fee Income, Operating, Paid In Cash </link:label>

<link:label id="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash_documentation_en-US" xlink:label="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest And Fee Income, Operating, Paid In Cash </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:href="gbdc-20230930.xsd#gbdc_InterestAndFeeIncomeOperatingPaidInCash"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:to="lab_gbdc_InterestAndFeeIncomeOperatingPaidInCash" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ParticipateInDividendReinvestmentPlanRiskMember_label_en-US" xlink:label="lab_gbdc_ParticipateInDividendReinvestmentPlanRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Participate In Dividend Reinvestment Plan Risk [Member] </link:label>

<link:label id="lab_gbdc_ParticipateInDividendReinvestmentPlanRiskMember_documentation_en-US" xlink:label="lab_gbdc_ParticipateInDividendReinvestmentPlanRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Participate In Dividend Reinvestment Plan Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ParticipateInDividendReinvestmentPlanRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ParticipateInDividendReinvestmentPlanRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ParticipateInDividendReinvestmentPlanRiskMember" xlink:to="lab_gbdc_ParticipateInDividendReinvestmentPlanRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible_b56fa439-84bb-4a9c-92fe-a76e048e03a5_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Expenses not currently deductible </link:label>

<link:label id="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Expenses Not Currently Deductible </link:label>

<link:label id="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Expenses Not Currently Deductible </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:to="lab_gbdc_InvestmentCompanyExpensesNotCurrentlyDeductible" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentTransitionReport_260654cb-bffd-4e0c-8e12-d1e15f6309bd_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Transition Report </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentTransitionReport"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport" xlink:to="lab_dei_DocumentTransitionReport" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgPredtrmndFlag_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgPredtrmndFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing Predetermined </link:label>

<link:label id="lab_ecd_AwardTmgPredtrmndFlag_label_en-US" xlink:label="lab_ecd_AwardTmgPredtrmndFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing Predetermined [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgPredtrmndFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgPredtrmndFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgPredtrmndFlag" xlink:to="lab_ecd_AwardTmgPredtrmndFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtInstrumentAmortizationPeriod_85352e5f-1817-4d27-9d13-1ab2529880e1_terseLabel_en-US" xlink:label="lab_gbdc_DebtInstrumentAmortizationPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, amortization period </link:label>

<link:label id="lab_gbdc_DebtInstrumentAmortizationPeriod_label_en-US" xlink:label="lab_gbdc_DebtInstrumentAmortizationPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Amortization Period </link:label>

<link:label id="lab_gbdc_DebtInstrumentAmortizationPeriod_documentation_en-US" xlink:label="lab_gbdc_DebtInstrumentAmortizationPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Amortization Period </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtInstrumentAmortizationPeriod" xlink:href="gbdc-20230930.xsd#gbdc_DebtInstrumentAmortizationPeriod"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtInstrumentAmortizationPeriod" xlink:to="lab_gbdc_DebtInstrumentAmortizationPeriod" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_WellsFargoCreditFacilityMember_679bf72b-183d-4e17-a018-f179250fc8a9_terseLabel_en-US" xlink:label="lab_gbdc_WellsFargoCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Wells Fargo Credit Facility </link:label>

<link:label id="lab_gbdc_WellsFargoCreditFacilityMember_label_en-US" xlink:label="lab_gbdc_WellsFargoCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Wells Fargo Credit Facility [Member] </link:label>

<link:label id="lab_gbdc_WellsFargoCreditFacilityMember_documentation_en-US" xlink:label="lab_gbdc_WellsFargoCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Wells Fargo Credit Facility </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_WellsFargoCreditFacilityMember" xlink:href="gbdc-20230930.xsd#gbdc_WellsFargoCreditFacilityMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_WellsFargoCreditFacilityMember" xlink:to="lab_gbdc_WellsFargoCreditFacilityMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdverseTaxConsequencesRiskMember_label_en-US" xlink:label="lab_gbdc_AdverseTaxConsequencesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Tax Consequences Risk [Member] </link:label>

<link:label id="lab_gbdc_AdverseTaxConsequencesRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdverseTaxConsequencesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Tax Consequences Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdverseTaxConsequencesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdverseTaxConsequencesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdverseTaxConsequencesRiskMember" xlink:to="lab_gbdc_AdverseTaxConsequencesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_IndustryConcentrationRiskMember_4caa3a16-a770-4368-a6f5-99bc32ca5567_terseLabel_en-US" xlink:label="lab_gbdc_IndustryConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Concentration Risk </link:label>

<link:label id="lab_gbdc_IndustryConcentrationRiskMember_label_en-US" xlink:label="lab_gbdc_IndustryConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Concentration Risk [Member] </link:label>

<link:label id="lab_gbdc_IndustryConcentrationRiskMember_documentation_en-US" xlink:label="lab_gbdc_IndustryConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Concentration Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_IndustryConcentrationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_IndustryConcentrationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_IndustryConcentrationRiskMember" xlink:to="lab_gbdc_IndustryConcentrationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember_91606770-73fe-47d2-81e5-d4348dfb897d_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-controlled affiliate company investments </link:label>

<link:label id="lab_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember_label_en-US" xlink:label="lab_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Affiliated Issuer, Noncontrolled [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember" xlink:to="lab_us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_cfa4b734-8ae6-42c3-8c39-901e89c56b07_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock issued in connection with dividend reinvestment plan </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued During Period, Value, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_Notes2024Member_label_en-US" xlink:label="lab_gbdc_Notes2024Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2024 [Member] </link:label>

<link:label id="lab_gbdc_Notes2024Member_documentation_en-US" xlink:label="lab_gbdc_Notes2024Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Notes 2024 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_Notes2024Member" xlink:href="gbdc-20230930.xsd#gbdc_Notes2024Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_Notes2024Member" xlink:to="lab_gbdc_Notes2024Member" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityPublicFloat_2c42fb17-702b-42d1-83f6-a3ae0c50cbfc_terseLabel_en-US" xlink:label="lab_dei_EntityPublicFloat" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Public Float </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityPublicFloat" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityPublicFloat"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityPublicFloat" xlink:to="lab_dei_EntityPublicFloat" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_ca9d184d-443f-4044-b850-11c3ca8b6103_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Instrument [Axis] </link:label>

<link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Instrument [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis" xlink:to="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_700294ad-35ea-45bd-93f5-33fdf3ed6b00_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt </link:label>

<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_1c53295e-f8af-4cca-8328-5981e4657881_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt, carrying value </link:label>

<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_7e2aed21-f216-4b1f-9edc-6e294a31766c_totalLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt </link:label>

<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentCarryingAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount" xlink:to="lab_us-gaap_DebtInstrumentCarryingAmount" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AllTradingArrangementsMember_terseLabel_en-US" xlink:label="lab_ecd_AllTradingArrangementsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Trading Arrangements </link:label>

<link:label id="lab_ecd_AllTradingArrangementsMember_label_en-US" xlink:label="lab_ecd_AllTradingArrangementsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Trading Arrangements [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AllTradingArrangementsMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllTradingArrangementsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllTradingArrangementsMember" xlink:to="lab_ecd_AllTradingArrangementsMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InflationRiskMember_label_en-US" xlink:label="lab_gbdc_InflationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Inflation Risk [Member] </link:label>

<link:label id="lab_gbdc_InflationRiskMember_documentation_en-US" xlink:label="lab_gbdc_InflationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Inflation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InflationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_InflationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InflationRiskMember" xlink:to="lab_gbdc_InflationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AllAdjToCompMember_terseLabel_en-US" xlink:label="lab_ecd_AllAdjToCompMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Adjustments to Compensation </link:label>

<link:label id="lab_ecd_AllAdjToCompMember_label_en-US" xlink:label="lab_ecd_AllAdjToCompMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Adjustments to Compensation [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AllAdjToCompMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllAdjToCompMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllAdjToCompMember" xlink:to="lab_ecd_AllAdjToCompMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_a232a736-c309-48a4-9128-86887547a676_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restricted cash and cash equivalents and restricted foreign currencies </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:to="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2027NotesMember_707a6f4c-f1eb-4196-a5fa-635afc2d3198_terseLabel_en-US" xlink:label="lab_gbdc_A2027NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2027 Notes </link:label>

<link:label id="lab_gbdc_A2027NotesMember_label_en-US" xlink:label="lab_gbdc_A2027NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2027 Notes [Member] </link:label>

<link:label id="lab_gbdc_A2027NotesMember_documentation_en-US" xlink:label="lab_gbdc_A2027NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2027 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2027NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_A2027NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2027NotesMember" xlink:to="lab_gbdc_A2027NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_OutstandingRecoveryCompAmt_terseLabel_en-US" xlink:label="lab_ecd_OutstandingRecoveryCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Amount </link:label>

<link:label id="lab_ecd_OutstandingRecoveryCompAmt_label_en-US" xlink:label="lab_ecd_OutstandingRecoveryCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Outstanding Recovery Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_OutstandingRecoveryCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OutstandingRecoveryCompAmt" xlink:to="lab_ecd_OutstandingRecoveryCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RealEstateManagementDevelopmentSectorMember_70ce043d-e40c-4988-b137-a6cd823e688e_terseLabel_en-US" xlink:label="lab_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management & Development </link:label>

<link:label id="lab_gbdc_RealEstateManagementDevelopmentSectorMember_label_en-US" xlink:label="lab_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management & Development Sector [Member] </link:label>

<link:label id="lab_gbdc_RealEstateManagementDevelopmentSectorMember_documentation_en-US" xlink:label="lab_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management & Development Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_RealEstateManagementDevelopmentSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:to="lab_gbdc_RealEstateManagementDevelopmentSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount_469c292f-2035-4f60-970c-fda871017dab_terseLabel_en-US" xlink:label="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, debentures commitment, amount </link:label>

<link:label id="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount_label_en-US" xlink:label="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Debentures Commitment, Amount </link:label>

<link:label id="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount_documentation_en-US" xlink:label="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Debentures Commitment, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:href="gbdc-20230930.xsd#gbdc_DebtInstrumentDebenturesCommitmentAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:to="lab_gbdc_DebtInstrumentDebenturesCommitmentAmount" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyTotalReturn_b5d4d4b9-35c0-448c-967e-7e67aa113fee_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTotalReturn" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total return based on average net asset value </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyTotalReturn_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTotalReturn" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Total Return </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyTotalReturn" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyTotalReturn"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyTotalReturn" xlink:to="lab_us-gaap_InvestmentCompanyTotalReturn" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LifeSciencesToolsServicesSectorMember_ffa51d28-3689-4bf1-916a-191e052b2e53_terseLabel_en-US" xlink:label="lab_gbdc_LifeSciencesToolsServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools & Services </link:label>

<link:label id="lab_gbdc_LifeSciencesToolsServicesSectorMember_label_en-US" xlink:label="lab_gbdc_LifeSciencesToolsServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools & Services Sector [Member] </link:label>

<link:label id="lab_gbdc_LifeSciencesToolsServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_LifeSciencesToolsServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools & Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LifeSciencesToolsServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_LifeSciencesToolsServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LifeSciencesToolsServicesSectorMember" xlink:to="lab_gbdc_LifeSciencesToolsServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeAssets_9efad176-6a16-423c-93bd-65d6abfba5db_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net unrealized appreciation on forward currency contracts </link:label>

<link:label id="lab_us-gaap_DerivativeAssets_37159b76-425b-4358-a698-6b663b8024a8_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net amounts presented in the Consolidated Statement of Financial Condition </link:label>

<link:label id="lab_us-gaap_DerivativeAssets_label_en-US" xlink:label="lab_us-gaap_DerivativeAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssets" xlink:to="lab_us-gaap_DerivativeAssets" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventTypeAxis_85fed54b-f6b3-4e40-a13b-ec318eabe0f5_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event Type [Axis] </link:label>

<link:label id="lab_us-gaap_SubsequentEventTypeAxis_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis" xlink:to="lab_us-gaap_SubsequentEventTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember_label_en-US" xlink:label="lab_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limitation On The Ability to Sell Investments Held By Funding Subsidiaries Risk [Member] </link:label>

<link:label id="lab_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember_documentation_en-US" xlink:label="lab_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limitation On The Ability to Sell Investments Held By Funding Subsidiaries Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember" xlink:to="lab_gbdc_LimitationOnTheAbilityToSellInvestmentsHeldByFundingSubsidiariesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences_e8dcd232-2be9-4eb8-8926-58850ef473d8_negatedTerseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other realized gain/loss differences </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Realized Gain (Loss) Differences </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Realized Gain (Loss) Differences </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyOtherRealizedGainLossDifferences"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:to="lab_gbdc_InvestmentCompanyOtherRealizedGainLossDifferences" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock_92e180c8-9139-42b8-b188-4905e34e9a10_terseLabel_en-US" xlink:label="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Debt Securitization </link:label>

<link:label id="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock_label_en-US" xlink:label="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Debt Securitization [Table Text Block] </link:label>

<link:label id="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Debt Securitization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ScheduleOfDebtSecuritizationTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:to="lab_gbdc_ScheduleOfDebtSecuritizationTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio_93842420-861f-4e43-95ec-5c4677887e8f_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset coverage ratio </link:label>

<link:label id="lab_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio" xlink:to="lab_us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement_219fe90c-fdeb-41f9-8ed5-92bc911e2043_totalLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net expenses </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement" xlink:to="lab_us-gaap_InvestmentCompanyExpenseAfterReductionOfFeeWaiverAndReimbursement" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PaperAndForestProductsSectorMember_29f9f5bb-6978-4483-9650-567a12b91666_terseLabel_en-US" xlink:label="lab_gbdc_PaperAndForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper and Forest Products </link:label>

<link:label id="lab_gbdc_PaperAndForestProductsSectorMember_label_en-US" xlink:label="lab_gbdc_PaperAndForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper And Forest Products Sector [Member] </link:label>

<link:label id="lab_gbdc_PaperAndForestProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_PaperAndForestProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paper And Forest Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PaperAndForestProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_PaperAndForestProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PaperAndForestProductsSectorMember" xlink:to="lab_gbdc_PaperAndForestProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCreditMember_46dcb6c3-9b3d-4005-ad5b-2e298974b7bb_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCreditMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Tax Credit Carryforward </link:label>

<link:label id="lab_us-gaap_InvestmentCreditMember_label_en-US" xlink:label="lab_us-gaap_InvestmentCreditMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Tax Credit Carryforward [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCreditMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCreditMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCreditMember" xlink:to="lab_us-gaap_InvestmentCreditMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_529c3cb7-564d-4f07-ad4c-e8ee688972fe_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net investment income - after tax (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Investment Income (Loss), Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare" xlink:to="lab_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember_bc244aa3-9143-426f-9353-cf9a420db9b0_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Capital Gain Incentive Fee </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Capital Gain Incentive Fee [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Capital Gain Incentive Fee </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:to="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OtherAssets_343f7fdb-6b2f-4848-be4a-ecd969576fdd_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other assets </link:label>

<link:label id="lab_us-gaap_OtherAssets_label_en-US" xlink:label="lab_us-gaap_OtherAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssets" xlink:to="lab_us-gaap_OtherAssets" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare_b0645cf1-2f6f-456f-980a-c6aab0bb07d5_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase in net assets as a result of repurchases of shares (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Share Repurchase, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare" xlink:to="lab_us-gaap_InvestmentCompanyRepurchaseOfSharesPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees_3801926d-a2a6-4325-9219-af68839eb56c_terseLabel_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accrued trustee fees </link:label>

<link:label id="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees_label_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) In Accrued Trustee Fees </link:label>

<link:label id="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees_documentation_en-US" xlink:label="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) In Accrued Trustee Fees </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:href="gbdc-20230930.xsd#gbdc_IncreaseDecreaseInAccruedTrusteeFees"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:to="lab_gbdc_IncreaseDecreaseInAccruedTrusteeFees" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentsIncorporatedByReferenceTextBlock_4ad7751b-aab1-4f13-8838-81dd403e0cd3_terseLabel_en-US" xlink:label="lab_dei_DocumentsIncorporatedByReferenceTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Documents Incorporated by Reference </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentsIncorporatedByReferenceTextBlock" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentsIncorporatedByReferenceTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentsIncorporatedByReferenceTextBlock" xlink:to="lab_dei_DocumentsIncorporatedByReferenceTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentPeriodEndDate_a067e4a2-a625-4b6c-9457-be3cd63eaf27_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Period End Date </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate" xlink:to="lab_dei_DocumentPeriodEndDate" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrAdoptionDate_terseLabel_en-US" xlink:label="lab_ecd_TrdArrAdoptionDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adoption Date </link:label>

<link:label id="lab_ecd_TrdArrAdoptionDate_label_en-US" xlink:label="lab_ecd_TrdArrAdoptionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement Adoption Date </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrAdoptionDate" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrAdoptionDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrAdoptionDate" xlink:to="lab_ecd_TrdArrAdoptionDate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare_22a6ba8c-b763-4dc8-8a80-a60e790c42c5_negatedLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution declared (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare_6dbf0c70-96ba-41fd-a5ac-723177ba698e_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution to shareholders (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distribution to Shareholders, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributionToShareholdersPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:to="lab_us-gaap_InvestmentCompanyDistributionToShareholdersPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount_31864a10-dbdb-4c7b-ab3a-bb6ab7a97a34_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment company, financial commitment to investee, future amount </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount" xlink:to="lab_us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_0870f68f-54aa-47c9-95ed-efcd53c39c07_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Significant Accounting Policies and Recent Accounting Updates </link:label>

<link:label id="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_label_en-US" xlink:label="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basis of Presentation and Significant Accounting Policies [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:to="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan_2267c38a-09a2-4cdf-8c30-9c272bd492b5_terseLabel_en-US" xlink:label="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DRIP Shares Value </link:label>

<link:label id="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan_label_en-US" xlink:label="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued And Purchased During Period, Value, Dividend Reinvestment Plan </link:label>

<link:label id="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan_documentation_en-US" xlink:label="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued And Purchased During Period, Value, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:href="gbdc-20230930.xsd#gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:to="lab_gbdc_StockIssuedAndPurchasedDuringPeriodValueDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember_label_en-US" xlink:label="lab_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Private And Middle-Market Portfolio Company Risk [Member] </link:label>

<link:label id="lab_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember_documentation_en-US" xlink:label="lab_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Private And Middle-Market Portfolio Company Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember" xlink:to="lab_gbdc_PrivateAndMiddleMarketPortfolioCompanyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember_69a53586-f033-4888-92c6-2cb060b7e3d7_terseLabel_en-US" xlink:label="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net translation of investments in foreign currencies </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember_label_en-US" xlink:label="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Foreign Currency Transaction, Before Tax [Member] </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember_documentation_en-US" xlink:label="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Foreign Currency Transaction, Before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:href="gbdc-20230930.xsd#gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:to="lab_gbdc_UnrealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ValuationTechniqueDomain_ead7848c-46dc-462b-bcd2-a037b44fec84_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation Approach and Technique [Domain] </link:label>

<link:label id="lab_us-gaap_ValuationTechniqueDomain_label_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation Approach and Technique [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ValuationTechniqueDomain" xlink:to="lab_us-gaap_ValuationTechniqueDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_68bab9ce-d7b4-4585-9ae7-b02aeb34b8cc_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurements </link:label>

<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosures [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosuresTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresTextBlock" xlink:to="lab_us-gaap_FairValueDisclosuresTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DividendIncomeOperating_8ac2317c-ed8a-46db-b499-64b188c87b9f_terseLabel_en-US" xlink:label="lab_us-gaap_DividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend income </link:label>

<link:label id="lab_us-gaap_DividendIncomeOperating_label_en-US" xlink:label="lab_us-gaap_DividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Income, Operating </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendIncomeOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendIncomeOperating"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendIncomeOperating" xlink:to="lab_us-gaap_DividendIncomeOperating" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyTotalReturnMarketValue_6e230ba0-2339-435b-b7f2-6729fb394e0e_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTotalReturnMarketValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total return based on market value </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyTotalReturnMarketValue_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTotalReturnMarketValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Total Return, Market Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyTotalReturnMarketValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyTotalReturnMarketValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyTotalReturnMarketValue" xlink:to="lab_us-gaap_InvestmentCompanyTotalReturnMarketValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquityAbstract_label_en-US" xlink:label="lab_us-gaap_EquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityAbstract" xlink:to="lab_us-gaap_EquityAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAClassA12020NotesMember_8de9a1c4-0cf9-42d8-903b-4f8f3920fa9a_terseLabel_en-US" xlink:label="lab_gbdc_AAAClassA12020NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1 2020 Notes </link:label>

<link:label id="lab_gbdc_AAAClassA12020NotesMember_label_en-US" xlink:label="lab_gbdc_AAAClassA12020NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1 2020 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAAClassA12020NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAAClassA12020NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1 2020 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAClassA12020NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAClassA12020NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAClassA12020NotesMember" xlink:to="lab_gbdc_AAAClassA12020NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdministrationAgreementMember_0ee59b14-6cc9-4f5c-a0de-2e3b3b080380_terseLabel_en-US" xlink:label="lab_gbdc_AdministrationAgreementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administration Agreement </link:label>

<link:label id="lab_gbdc_AdministrationAgreementMember_label_en-US" xlink:label="lab_gbdc_AdministrationAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administration Agreement [Member] </link:label>

<link:label id="lab_gbdc_AdministrationAgreementMember_documentation_en-US" xlink:label="lab_gbdc_AdministrationAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administration Agreement </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdministrationAgreementMember" xlink:href="gbdc-20230930.xsd#gbdc_AdministrationAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdministrationAgreementMember" xlink:to="lab_gbdc_AdministrationAgreementMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Company Selected Measure </link:label>

<link:label id="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Company Selected Measure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DiversifiedConsumerServicesSectorMember_0e121e6f-f79a-4cc8-85ed-e8acbf4fa9d8_terseLabel_en-US" xlink:label="lab_gbdc_DiversifiedConsumerServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Consumer Services </link:label>

<link:label id="lab_gbdc_DiversifiedConsumerServicesSectorMember_label_en-US" xlink:label="lab_gbdc_DiversifiedConsumerServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Consumer Services Sector [Member] </link:label>

<link:label id="lab_gbdc_DiversifiedConsumerServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_DiversifiedConsumerServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Consumer Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DiversifiedConsumerServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_DiversifiedConsumerServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DiversifiedConsumerServicesSectorMember" xlink:to="lab_gbdc_DiversifiedConsumerServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_8eb9faf5-5fd0-437e-8778-fc59c2707b39_terseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forward currency contracts </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_1c736a66-d938-4001-9520-ec2f7c5f1980_negatedLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized (appreciation) depreciation on forward currency contracts </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_a4b38e43-fb64-45c3-96c6-8e024beb2931_verboseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Change in unrealized appreciation (depreciation) on forward currency contracts recognized in income </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_label_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss) on Derivatives </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrealizedGainLossOnDerivatives" xlink:to="lab_us-gaap_UnrealizedGainLossOnDerivatives" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_ee949418-ab5f-4dd7-911b-5520c897f2d4_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and cash equivalents </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StrategicTransactionsConflictRiskMember_label_en-US" xlink:label="lab_gbdc_StrategicTransactionsConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Strategic Transactions Conflict Risk [Member] </link:label>

<link:label id="lab_gbdc_StrategicTransactionsConflictRiskMember_documentation_en-US" xlink:label="lab_gbdc_StrategicTransactionsConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Strategic Transactions Conflict Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StrategicTransactionsConflictRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_StrategicTransactionsConflictRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StrategicTransactionsConflictRiskMember" xlink:to="lab_gbdc_StrategicTransactionsConflictRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CreditFacilityDomain_7d2e976d-fefe-4fff-912b-340206f8bc9d_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility [Domain] </link:label>

<link:label id="lab_us-gaap_CreditFacilityDomain_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit Facility [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain" xlink:to="lab_us-gaap_CreditFacilityDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_930dd62b-15b1-4862-be95-e4c8191ab38f_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, basis spread on variable rate </link:label>

<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Basis Spread on Variable Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_9dbb07ec-27bf-4413-b71a-20afaf1f370e_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net amount </link:label>

<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Other Measure </link:label>

<link:label id="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Other Measure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CompActuallyPaidVsOtherMeasureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember_label_en-US" xlink:label="lab_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Potential For Advisors And Its Affiliates To Received Economic Benefit Risk [Member] </link:label>

<link:label id="lab_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember_documentation_en-US" xlink:label="lab_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Potential For Advisors And Its Affiliates To Received Economic Benefit Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember" xlink:to="lab_gbdc_PotentialForAdvisorsAndItsAffiliatesToReceivedEconomicBenefitRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy_039a0ba3-44f8-40be-ad03-a95d6be04182_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and cash equivalents and foreign currencies </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy" xlink:to="lab_us-gaap_CashAndCashEquivalentsUnrestrictedCashAndCashEquivalentsPolicy" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_94deb286-9565-489d-a07e-56120dba4420_terseLabel_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PIK interest and non-cash dividends </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_label_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Paid-In-Kind Interest </link:label>

<link:label id="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_documentation_en-US" xlink:label="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Paid-In-Kind Interest </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:href="gbdc-20230930.xsd#gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:to="lab_gbdc_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2018DebtSecuritizationMember_23cbcb11-577c-4d52-aa1d-632e43ad3859_terseLabel_en-US" xlink:label="lab_gbdc_A2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 Debt Securitization </link:label>

<link:label id="lab_gbdc_A2018DebtSecuritizationMember_label_en-US" xlink:label="lab_gbdc_A2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 Debt Securitization [Member] </link:label>

<link:label id="lab_gbdc_A2018DebtSecuritizationMember_documentation_en-US" xlink:label="lab_gbdc_A2018DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 Debt Securitization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2018DebtSecuritizationMember" xlink:href="gbdc-20230930.xsd#gbdc_A2018DebtSecuritizationMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2018DebtSecuritizationMember" xlink:to="lab_gbdc_A2018DebtSecuritizationMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DividendsAndDistributionsTextBlock_e4cea042-8b59-4703-90e2-9420adbaf8c8_terseLabel_en-US" xlink:label="lab_gbdc_DividendsAndDistributionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends and Distributions </link:label>

<link:label id="lab_gbdc_DividendsAndDistributionsTextBlock_label_en-US" xlink:label="lab_gbdc_DividendsAndDistributionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends And Distributions [Text Block] </link:label>

<link:label id="lab_gbdc_DividendsAndDistributionsTextBlock_documentation_en-US" xlink:label="lab_gbdc_DividendsAndDistributionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends And Distributions </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DividendsAndDistributionsTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_DividendsAndDistributionsTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DividendsAndDistributionsTextBlock" xlink:to="lab_gbdc_DividendsAndDistributionsTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_7b876af4-a3f6-46d0-9560-bd183a19e0fb_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest, dividend and fee income </link:label>

<link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_label_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest and Dividend Income, Operating </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestAndDividendIncomeOperating"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="lab_us-gaap_InterestAndDividendIncomeOperating" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MeasurementInputEbitdaMultipleMember_90e827e4-bc75-40b6-9b44-63b2d3b65470_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputEbitdaMultipleMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> EBITDA multiples </link:label>

<link:label id="lab_us-gaap_MeasurementInputEbitdaMultipleMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputEbitdaMultipleMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input, EBITDA Multiple [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputEbitdaMultipleMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputEbitdaMultipleMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputEbitdaMultipleMember" xlink:to="lab_us-gaap_MeasurementInputEbitdaMultipleMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TradingCompaniesAndDistributorsSectorMember_72d101f3-95b9-4cd2-b50e-c9a20a18e2b5_terseLabel_en-US" xlink:label="lab_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Companies and Distributors </link:label>

<link:label id="lab_gbdc_TradingCompaniesAndDistributorsSectorMember_label_en-US" xlink:label="lab_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Companies And Distributors Sector [Member] </link:label>

<link:label id="lab_gbdc_TradingCompaniesAndDistributorsSectorMember_documentation_en-US" xlink:label="lab_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Companies And Distributors Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_TradingCompaniesAndDistributorsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:to="lab_gbdc_TradingCompaniesAndDistributorsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_e9b5275d-6d13-4fda-84eb-0991db50e55c_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paid in Capital in Excess of Par </link:label>

<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentAnnualReport_357c0bdb-5888-4ff0-89f8-155df7a1e420_terseLabel_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Annual Report </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentAnnualReport"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentAnnualReport" xlink:to="lab_dei_DocumentAnnualReport" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ImpactOfBrexitRiskMember_label_en-US" xlink:label="lab_gbdc_ImpactOfBrexitRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Impact Of Brexit Risk [Member] </link:label>

<link:label id="lab_gbdc_ImpactOfBrexitRiskMember_documentation_en-US" xlink:label="lab_gbdc_ImpactOfBrexitRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Impact Of Brexit Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ImpactOfBrexitRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ImpactOfBrexitRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ImpactOfBrexitRiskMember" xlink:to="lab_gbdc_ImpactOfBrexitRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BalanceSheetLocationAxis_11547f33-d3ee-4bbc-baeb-cd5e111b6fc0_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>

<link:label id="lab_us-gaap_BalanceSheetLocationAxis_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationAxis" xlink:to="lab_us-gaap_BalanceSheetLocationAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LossContingenciesLineItems_8f1e2c70-a480-4a9c-b82b-291a725f89c5_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>

<link:label id="lab_us-gaap_LossContingenciesLineItems_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems" xlink:to="lab_us-gaap_LossContingenciesLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_dei_CoverAbstract_785a887c-0643-41a0-9a07-4db257f2940d_terseLabel_en-US" xlink:label="lab_dei_CoverAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cover [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CoverAbstract" xlink:to="lab_dei_CoverAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventsTextBlock_1cf153a7-eca2-4431-81b9-be55e47803ec_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Events </link:label>

<link:label id="lab_us-gaap_SubsequentEventsTextBlock_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Events [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventsTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventsTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsTextBlock" xlink:to="lab_us-gaap_SubsequentEventsTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TaxPeriodAxis_7390b37b-b85c-4e37-9ea6-1999aa49b74d_terseLabel_en-US" xlink:label="lab_us-gaap_TaxPeriodAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Period [Axis] </link:label>

<link:label id="lab_us-gaap_TaxPeriodAxis_label_en-US" xlink:label="lab_us-gaap_TaxPeriodAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Period [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxPeriodAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxPeriodAxis" xlink:to="lab_us-gaap_TaxPeriodAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_efc23c8f-df14-4f9f-84a6-523b3ed6e381_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of deferred debt issuance costs </link:label>

<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_3a66ebef-9d46-474b-8d61-2e8fd4750136_verboseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of debt issuance costs </link:label>

<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of Debt Issuance Costs </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCosts"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdvisorsResignOn60DaysNoticeRiskMember_label_en-US" xlink:label="lab_gbdc_AdvisorsResignOn60DaysNoticeRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Advisors Resign On 60 Days' Notice Risk [Member] </link:label>

<link:label id="lab_gbdc_AdvisorsResignOn60DaysNoticeRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdvisorsResignOn60DaysNoticeRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Advisors Resign On 60 Days' Notice Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdvisorsResignOn60DaysNoticeRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdvisorsResignOn60DaysNoticeRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdvisorsResignOn60DaysNoticeRiskMember" xlink:to="lab_gbdc_AdvisorsResignOn60DaysNoticeRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TaxCreditCarryforwardNameDomain_daed4cc2-d280-4d11-b24d-6848b05f10c7_terseLabel_en-US" xlink:label="lab_us-gaap_TaxCreditCarryforwardNameDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Credit Carryforward, Name [Domain] </link:label>

<link:label id="lab_us-gaap_TaxCreditCarryforwardNameDomain_label_en-US" xlink:label="lab_us-gaap_TaxCreditCarryforwardNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Credit Carryforward, Name [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain" xlink:to="lab_us-gaap_TaxCreditCarryforwardNameDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_9cd73408-5d63-4a53-93f5-2aa03b93c335_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques [Line Items] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract_89f240b7-830f-4588-9119-d2846cd65a36_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized gain (loss) from: </link:label>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract_label_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:to="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_1c6892a4-5636-4a34-8fdc-a1cc7211bfd6_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments in and Advances to Affiliates, at Fair Value [Roll Forward] </link:label>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments in and Advances to Affiliates, at Fair Value [Roll Forward] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:to="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquityComponentDomain_c1cfc386-67b8-4656-86b3-3ffb0ff7d976_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Component [Domain] </link:label>

<link:label id="lab_us-gaap_EquityComponentDomain_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Component [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain" xlink:to="lab_us-gaap_EquityComponentDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassA2RGCIC2018NotesMember_1c0a286b-407c-4f30-8e33-7cfd7a106186_terseLabel_en-US" xlink:label="lab_gbdc_ClassA2RGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2-R GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassA2RGCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_ClassA2RGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2-R GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_ClassA2RGCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_ClassA2RGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-2-R GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassA2RGCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassA2RGCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassA2RGCIC2018NotesMember" xlink:to="lab_gbdc_ClassA2RGCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax_8221e6e7-dbb7-4fb4-8554-8eb0cc494d12_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Excise tax </link:label>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax_label_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Operating, Tax Expense (Benefit), Excise Tax </link:label>

<link:label id="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax_documentation_en-US" xlink:label="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Operating, Tax Expense (Benefit), Excise Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:to="lab_gbdc_InvestmentIncomeOperatingTaxExpenseBenefitExciseTax" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonGaapMeasureDescriptionTextBlock_terseLabel_en-US" xlink:label="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-GAAP Measure Description </link:label>

<link:label id="lab_ecd_NonGaapMeasureDescriptionTextBlock_label_en-US" xlink:label="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-GAAP Measure Description [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonGaapMeasureDescriptionTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:to="lab_ecd_NonGaapMeasureDescriptionTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityCurrentReportingStatus_41478633-0859-4f3a-b4cc-44abace93d9d_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Current Reporting Status </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCurrentReportingStatus"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus" xlink:to="lab_dei_EntityCurrentReportingStatus" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_1b2398dc-85db-4ffa-9820-05fe8e713191_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain" xlink:to="lab_us-gaap_ConcentrationRiskTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassB2GCIC2018NotesMember_7194abdd-13f0-434c-9e33-10c724b2850b_terseLabel_en-US" xlink:label="lab_gbdc_ClassB2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-2 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassB2GCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_ClassB2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-2 GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_ClassB2GCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_ClassB2GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-2 GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassB2GCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassB2GCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassB2GCIC2018NotesMember" xlink:to="lab_gbdc_ClassB2GCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MarketVolatilityRiskMember_label_en-US" xlink:label="lab_gbdc_MarketVolatilityRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Market Volatility Risk [Member] </link:label>

<link:label id="lab_gbdc_MarketVolatilityRiskMember_documentation_en-US" xlink:label="lab_gbdc_MarketVolatilityRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Market Volatility Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MarketVolatilityRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_MarketVolatilityRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MarketVolatilityRiskMember" xlink:to="lab_gbdc_MarketVolatilityRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock_10b91b65-28ae-4896-87d2-d0cf7f69abdd_terseLabel_en-US" xlink:label="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reconciliation of Taxable Income Increase (Decrease) in Net Assets from Operation </link:label>

<link:label id="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock_label_en-US" xlink:label="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reconciliation Of Taxable Income Increase (Decrease) In Net Assets From Operation [Table Text Block] </link:label>

<link:label id="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reconciliation Of Taxable Income Increase (Decrease) In Net Assets From Operation </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:to="lab_gbdc_ReconciliationOfTaxableIncomeIncreaseDecreaseInNetAssetsFromOperationTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CommunicationsEquipmentSectorMember_2769bfa3-cda3-47c2-b279-c6aae5e5a1b9_terseLabel_en-US" xlink:label="lab_gbdc_CommunicationsEquipmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Communications Equipment </link:label>

<link:label id="lab_gbdc_CommunicationsEquipmentSectorMember_label_en-US" xlink:label="lab_gbdc_CommunicationsEquipmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Communications Equipment Sector [Member] </link:label>

<link:label id="lab_gbdc_CommunicationsEquipmentSectorMember_documentation_en-US" xlink:label="lab_gbdc_CommunicationsEquipmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Communications Equipment Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CommunicationsEquipmentSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_CommunicationsEquipmentSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CommunicationsEquipmentSectorMember" xlink:to="lab_gbdc_CommunicationsEquipmentSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_country_SE_2a1dcd64-63c3-430f-9549-913d5a56e8d0_terseLabel_en-US" xlink:label="lab_country_SE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sweden </link:label>

<link:label id="lab_country_SE_label_en-US" xlink:label="lab_country_SE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SWEDEN </link:label>

<link:loc xlink:type="locator" xlink:label="loc_country_SE" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_SE"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_SE" xlink:to="lab_country_SE" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss_c0de7a8f-113b-470c-9c8a-738e2f74a147_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Undistributed realized gains – tax basis </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distributable Earnings (Loss), Accumulated Long-Term Capital Gain (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss" xlink:to="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedLongTermCapitalGainLoss" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProportionOfAssetsRiskMember_label_en-US" xlink:label="lab_gbdc_ProportionOfAssetsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proportion Of Assets Risk [Member] </link:label>

<link:label id="lab_gbdc_ProportionOfAssetsRiskMember_documentation_en-US" xlink:label="lab_gbdc_ProportionOfAssetsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proportion Of Assets Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProportionOfAssetsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ProportionOfAssetsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProportionOfAssetsRiskMember" xlink:to="lab_gbdc_ProportionOfAssetsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_srt_ScenarioUnspecifiedDomain_e304b5f2-2830-4a42-8877-85a27202d5c4_terseLabel_en-US" xlink:label="lab_srt_ScenarioUnspecifiedDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scenario [Domain] </link:label>

<link:label id="lab_srt_ScenarioUnspecifiedDomain_label_en-US" xlink:label="lab_srt_ScenarioUnspecifiedDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scenario [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioUnspecifiedDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScenarioUnspecifiedDomain" xlink:to="lab_srt_ScenarioUnspecifiedDomain" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Disqualification of Tax Benefits, Amount </link:label>

<link:label id="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery due to Disqualification of Tax Benefits, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:to="lab_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscTable_terseLabel_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Awards Close in Time to MNPI Disclosures </link:label>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscTable_label_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Awards Close in Time to MNPI Disclosures [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardsCloseToMnpiDiscTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:to="lab_ecd_AwardsCloseToMnpiDiscTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HealthCareProvidersServicesSectorMember_d1471ecd-256f-4aed-9c7f-444b31c894e7_terseLabel_en-US" xlink:label="lab_gbdc_HealthCareProvidersServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Providers & Services </link:label>

<link:label id="lab_gbdc_HealthCareProvidersServicesSectorMember_label_en-US" xlink:label="lab_gbdc_HealthCareProvidersServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Providers & Services Sector [Member] </link:label>

<link:label id="lab_gbdc_HealthCareProvidersServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_HealthCareProvidersServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Providers & Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HealthCareProvidersServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HealthCareProvidersServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HealthCareProvidersServicesSectorMember" xlink:to="lab_gbdc_HealthCareProvidersServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AccruedTrusteeFees_ff30ae94-bb9a-4831-9467-fcddcfeeaf3d_terseLabel_en-US" xlink:label="lab_gbdc_AccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accrued trustee fees </link:label>

<link:label id="lab_gbdc_AccruedTrusteeFees_label_en-US" xlink:label="lab_gbdc_AccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accrued Trustee Fees </link:label>

<link:label id="lab_gbdc_AccruedTrusteeFees_documentation_en-US" xlink:label="lab_gbdc_AccruedTrusteeFees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accrued Trustee Fees </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AccruedTrusteeFees" xlink:href="gbdc-20230930.xsd#gbdc_AccruedTrusteeFees"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AccruedTrusteeFees" xlink:to="lab_gbdc_AccruedTrusteeFees" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember_label_en-US" xlink:label="lab_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dependent On Advisors To Maintain Or Develop Strong Referral Relationship Risk [Member] </link:label>

<link:label id="lab_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember_documentation_en-US" xlink:label="lab_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dependent On Advisors To Maintain Or Develop Strong Referral Relationship Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember" xlink:to="lab_gbdc_DependentOnAdvisorsToMaintainOrDevelopStrongReferralRelationshipRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_VariableRateDomain_ee1b7b31-e232-40ba-aad4-f2c38136c033_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Variable Rate [Domain] </link:label>

<link:label id="lab_us-gaap_VariableRateDomain_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Variable Rate [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableRateDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain" xlink:to="lab_us-gaap_VariableRateDomain" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PayVsPerformanceDisclosureLineItems_label_en-US" xlink:label="lab_ecd_PayVsPerformanceDisclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pay vs Performance Disclosure [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PayVsPerformanceDisclosureLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="lab_ecd_PayVsPerformanceDisclosureLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityVoluntaryFilers_b226d393-487c-4cd9-9bf9-36c533af08d1_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Voluntary Filers </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityVoluntaryFilers"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers" xlink:to="lab_dei_EntityVoluntaryFilers" xlink:type="arc" order="1"/>

<link:label id="lab_srt_RangeMember_07f96374-ac09-4108-890e-0abca809e072_terseLabel_en-US" xlink:label="lab_srt_RangeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statistical Measurement [Domain] </link:label>

<link:label id="lab_srt_RangeMember_label_en-US" xlink:label="lab_srt_RangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statistical Measurement [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeMember" xlink:to="lab_srt_RangeMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FailureToMakeFollowOnInvestmentRiskMember_label_en-US" xlink:label="lab_gbdc_FailureToMakeFollowOnInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Failure To Make Follow-on Investment Risk [Member] </link:label>

<link:label id="lab_gbdc_FailureToMakeFollowOnInvestmentRiskMember_documentation_en-US" xlink:label="lab_gbdc_FailureToMakeFollowOnInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Failure To Make Follow-on Investment Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FailureToMakeFollowOnInvestmentRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_FailureToMakeFollowOnInvestmentRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FailureToMakeFollowOnInvestmentRiskMember" xlink:to="lab_gbdc_FailureToMakeFollowOnInvestmentRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_a1efa3f5-be83-461c-a649-747af8896bb5_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Currency to be sold </link:label>

<link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Liability, Notional Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotionalAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilityNotionalAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityNotionalAmount" xlink:to="lab_us-gaap_DerivativeLiabilityNotionalAmount" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook_52350f95-46f6-4d6b-81d1-dc1512f00df6_negatedTerseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other deductions/losses for tax not book </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Deductions (Loss) For Tax Not Book </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Deductions (Loss) For Tax Not Book </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:to="lab_gbdc_InvestmentCompanyOtherDeductionsLossForTaxNotBook" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_UndrlygSecurityMktPriceChngPct_terseLabel_en-US" xlink:label="lab_ecd_UndrlygSecurityMktPriceChngPct" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Underlying Security Market Price Change </link:label>

<link:label id="lab_ecd_UndrlygSecurityMktPriceChngPct_label_en-US" xlink:label="lab_ecd_UndrlygSecurityMktPriceChngPct" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Underlying Security Market Price Change, Percent </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_UndrlygSecurityMktPriceChngPct" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_UndrlygSecurityMktPriceChngPct"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_UndrlygSecurityMktPriceChngPct" xlink:to="lab_ecd_UndrlygSecurityMktPriceChngPct" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock_da23461c-4f0a-41ea-a520-32b889f1d6c0_terseLabel_en-US" xlink:label="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Distribution Agreement </link:label>

<link:label id="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock_label_en-US" xlink:label="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction Policy [Policy Text Block] </link:label>

<link:label id="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock_documentation_en-US" xlink:label="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction Policy </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_RelatedPartyTransactionPolicyPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:to="lab_gbdc_RelatedPartyTransactionPolicyPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtDisclosureTextBlock_59b36f9e-4680-4528-ae96-ca48ecc6142f_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Borrowings </link:label>

<link:label id="lab_us-gaap_DebtDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock" xlink:to="lab_us-gaap_DebtDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DiscontinuationOfLIBORRiskMember_label_en-US" xlink:label="lab_gbdc_DiscontinuationOfLIBORRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Discontinuation Of LIBOR Risk [Member] </link:label>

<link:label id="lab_gbdc_DiscontinuationOfLIBORRiskMember_documentation_en-US" xlink:label="lab_gbdc_DiscontinuationOfLIBORRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Discontinuation Of LIBOR Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DiscontinuationOfLIBORRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DiscontinuationOfLIBORRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DiscontinuationOfLIBORRiskMember" xlink:to="lab_gbdc_DiscontinuationOfLIBORRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, Debt and Equity Securities [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:to="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_7b270067-a118-4647-a332-fc932ac7fc7e_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revolving Credit Facility </link:label>

<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revolving Credit Facility [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevolvingCreditFacilityMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3f21891c-95bf-4925-8de7-4b5b659cb3fe_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Effect of foreign currency exchange rates </link:label>

<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_abb91ea1-9d1e-4dff-bf36-c866c8f5005f_negatedLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> (Provision) benefit for taxes on realized gains on investments </link:label>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_6c9b45bd-a718-4e3c-b90e-e53ba80e5268_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> (Provision) benefit for taxes on realized gain on investments </link:label>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_label_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:to="lab_us-gaap_RealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_MnpiDiscTimedForCompValFlag_terseLabel_en-US" xlink:label="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> MNPI Disclosure Timed for Compensation Value </link:label>

<link:label id="lab_ecd_MnpiDiscTimedForCompValFlag_label_en-US" xlink:label="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> MNPI Disclosure Timed for Compensation Value [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_MnpiDiscTimedForCompValFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:to="lab_ecd_MnpiDiscTimedForCompValFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_JPMCreditFacilityMember_1edfcc20-0e85-4613-b3f4-64535a131067_terseLabel_en-US" xlink:label="lab_gbdc_JPMCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility </link:label>

<link:label id="lab_gbdc_JPMCreditFacilityMember_label_en-US" xlink:label="lab_gbdc_JPMCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility [Member] </link:label>

<link:label id="lab_gbdc_JPMCreditFacilityMember_documentation_en-US" xlink:label="lab_gbdc_JPMCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_JPMCreditFacilityMember" xlink:href="gbdc-20230930.xsd#gbdc_JPMCreditFacilityMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_JPMCreditFacilityMember" xlink:to="lab_gbdc_JPMCreditFacilityMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss_db4248bf-fb68-4229-a2f6-aec94a22f50e_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Undistributed ordinary income – tax basis </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distributable Earnings (Loss), Accumulated Ordinary Income (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss" xlink:to="lab_us-gaap_InvestmentCompanyDistributableEarningsLossAccumulatedOrdinaryIncomeLoss" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EquitySecuritiesDistributionRiskMember_label_en-US" xlink:label="lab_gbdc_EquitySecuritiesDistributionRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Securities Distribution Risk [Member] </link:label>

<link:label id="lab_gbdc_EquitySecuritiesDistributionRiskMember_documentation_en-US" xlink:label="lab_gbdc_EquitySecuritiesDistributionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Securities Distribution Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EquitySecuritiesDistributionRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_EquitySecuritiesDistributionRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EquitySecuritiesDistributionRiskMember" xlink:to="lab_gbdc_EquitySecuritiesDistributionRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan_9d1b62b4-153c-4cc5-899e-f91f98f862bd_terseLabel_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DRIP shares purchase, weighted average exercised price per share (in dollars per share) </link:label>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan_label_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Purchased During Period, Weighted Average Exercised Price Per Share, Dividend Reinvestment Plan </link:label>

<link:label id="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan_documentation_en-US" xlink:label="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Purchased During Period, Weighted Average Exercised Price Per Share, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:href="gbdc-20230930.xsd#gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:to="lab_gbdc_StockPurchasedDuringPeriodWeightedAverageExercisedPricePerShareDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_RestatementDateAxis_terseLabel_en-US" xlink:label="lab_ecd_RestatementDateAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement Determination Date: </link:label>

<link:label id="lab_ecd_RestatementDateAxis_label_en-US" xlink:label="lab_ecd_RestatementDateAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement Determination Date [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDateAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_RestatementDateAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RestatementDateAxis" xlink:to="lab_ecd_RestatementDateAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MeasurementInputRevenueMultipleMember_e8264230-07b2-4f98-9e24-e0c13d337b74_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revenue multiples </link:label>

<link:label id="lab_us-gaap_MeasurementInputRevenueMultipleMember_label_en-US" xlink:label="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input, Revenue Multiple [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRevenueMultipleMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputRevenueMultipleMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputRevenueMultipleMember" xlink:to="lab_us-gaap_MeasurementInputRevenueMultipleMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ReductionOfCapitalInvestInAssetsRiskMember_label_en-US" xlink:label="lab_gbdc_ReductionOfCapitalInvestInAssetsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reduction of Capital Invest In Assets Risk [Member] </link:label>

<link:label id="lab_gbdc_ReductionOfCapitalInvestInAssetsRiskMember_documentation_en-US" xlink:label="lab_gbdc_ReductionOfCapitalInvestInAssetsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reduction of Capital Invest In Assets Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ReductionOfCapitalInvestInAssetsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ReductionOfCapitalInvestInAssetsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ReductionOfCapitalInvestInAssetsRiskMember" xlink:to="lab_gbdc_ReductionOfCapitalInvestInAssetsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommitmentsAndContingencies_5532c85c-9cd0-4a35-af40-f93ecc70e904_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commitments and Contingencies (Note 9) </link:label>

<link:label id="lab_us-gaap_CommitmentsAndContingencies_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commitments and Contingencies </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommitmentsAndContingencies"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies" xlink:to="lab_us-gaap_CommitmentsAndContingencies" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember_label_en-US" xlink:label="lab_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation On Trading Market Or Market Value on Publicly Issued Debt Securities Risk [Member] </link:label>

<link:label id="lab_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember_documentation_en-US" xlink:label="lab_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation On Trading Market Or Market Value on Publicly Issued Debt Securities Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember" xlink:to="lab_gbdc_FluctuationOnTradingMarketOrMarketValueOnPubliclyIssuedDebtSecuritiesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_WaterUtilitiesSectorMember_de68ab19-f7e8-4965-9873-1aa804f2647f_terseLabel_en-US" xlink:label="lab_gbdc_WaterUtilitiesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Water Utilities </link:label>

<link:label id="lab_gbdc_WaterUtilitiesSectorMember_label_en-US" xlink:label="lab_gbdc_WaterUtilitiesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Water Utilities Sector [Member] </link:label>

<link:label id="lab_gbdc_WaterUtilitiesSectorMember_documentation_en-US" xlink:label="lab_gbdc_WaterUtilitiesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Water Utilities Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_WaterUtilitiesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_WaterUtilitiesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_WaterUtilitiesSectorMember" xlink:to="lab_gbdc_WaterUtilitiesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_c2da6788-0709-4b39-9c4e-6609919c7ae0_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> (Provision) benefit for taxes on unrealized appreciation on investments </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_label_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:to="lab_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UndrawnRevolverMember_7d06410f-a49f-4796-b126-d83731efd180_terseLabel_en-US" xlink:label="lab_gbdc_UndrawnRevolverMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Undrawn Revolver </link:label>

<link:label id="lab_gbdc_UndrawnRevolverMember_label_en-US" xlink:label="lab_gbdc_UndrawnRevolverMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Undrawn Revolver [Member] </link:label>

<link:label id="lab_gbdc_UndrawnRevolverMember_documentation_en-US" xlink:label="lab_gbdc_UndrawnRevolverMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Undrawn Revolver </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UndrawnRevolverMember" xlink:href="gbdc-20230930.xsd#gbdc_UndrawnRevolverMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UndrawnRevolverMember" xlink:to="lab_gbdc_UndrawnRevolverMember" xlink:type="arc" order="1"/>

<link:label id="lab_srt_StatementGeographicalAxis_fc7c3caa-bbbc-42b3-944f-9391c032529a_terseLabel_en-US" xlink:label="lab_srt_StatementGeographicalAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographical [Axis] </link:label>

<link:label id="lab_srt_StatementGeographicalAxis_label_en-US" xlink:label="lab_srt_StatementGeographicalAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographical [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementGeographicalAxis" xlink:to="lab_srt_StatementGeographicalAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember_label_en-US" xlink:label="lab_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchase Program Price Volatility Risk [Member] </link:label>

<link:label id="lab_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember_documentation_en-US" xlink:label="lab_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchase Program Price Volatility Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_StockRepurchaseProgramPriceVolatilityRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember" xlink:to="lab_gbdc_StockRepurchaseProgramPriceVolatilityRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_10c81172-f3ee-488e-b5bd-8e22f95db997_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Federal Income Tax Matters </link:label>

<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquitySecuritiesIndustryMember_80f861cc-e94a-4bea-b17b-ba4a8248a61c_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesIndustryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Sector [Domain] </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesIndustryMember_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesIndustryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Sector [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesIndustryMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquitySecuritiesIndustryMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesIndustryMember" xlink:to="lab_us-gaap_EquitySecuritiesIndustryMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AClassC2020NotesMember_24991e2c-6413-470c-a4fc-3b3e152d5bde_terseLabel_en-US" xlink:label="lab_gbdc_AClassC2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C 2020 Notes </link:label>

<link:label id="lab_gbdc_AClassC2020NotesMember_label_en-US" xlink:label="lab_gbdc_AClassC2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C 2020 Notes [Member] </link:label>

<link:label id="lab_gbdc_AClassC2020NotesMember_documentation_en-US" xlink:label="lab_gbdc_AClassC2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C 2020 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AClassC2020NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AClassC2020NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AClassC2020NotesMember" xlink:to="lab_gbdc_AClassC2020NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare_a776ec0f-eb0a-499e-a3e0-301dd271b8d3_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average market value per unit (in dollars per share) </link:label>

<link:label id="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Average Market Value Per Share </link:label>

<link:label id="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Average Market Value Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyAverageMarketValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:to="lab_gbdc_InvestmentCompanyAverageMarketValuePerShare" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_727bf4d4-be6d-42de-ad16-2dd63c4d9aad_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revenue recognition </link:label>

<link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revenue [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRecognitionPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="lab_us-gaap_RevenueRecognitionPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities_11f725b0-1ef7-4962-99d4-01f50f91aca3_terseLabel_en-US" xlink:label="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from settlements of forward currency contracts </link:label>

<link:label id="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities_label_en-US" xlink:label="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Derivative Instrument, Operating Activities </link:label>

<link:label id="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities_documentation_en-US" xlink:label="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Derivative Instrument, Operating Activities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:href="gbdc-20230930.xsd#gbdc_ProceedsFromDerivativeInstrumentOperatingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:to="lab_gbdc_ProceedsFromDerivativeInstrumentOperatingActivities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DividendReinvestmentPlanDRIPMember_2ec84a54-9696-4fd7-b679-3e1a99c5a060_terseLabel_en-US" xlink:label="lab_gbdc_DividendReinvestmentPlanDRIPMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Reinvestment Plan (DRIP) </link:label>

<link:label id="lab_gbdc_DividendReinvestmentPlanDRIPMember_label_en-US" xlink:label="lab_gbdc_DividendReinvestmentPlanDRIPMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Reinvestment Plan (DRIP) [Member] </link:label>

<link:label id="lab_gbdc_DividendReinvestmentPlanDRIPMember_documentation_en-US" xlink:label="lab_gbdc_DividendReinvestmentPlanDRIPMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Reinvestment Plan (DRIP) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DividendReinvestmentPlanDRIPMember" xlink:href="gbdc-20230930.xsd#gbdc_DividendReinvestmentPlanDRIPMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DividendReinvestmentPlanDRIPMember" xlink:to="lab_gbdc_DividendReinvestmentPlanDRIPMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SpecialtyRetailSectorMember_d41a0b2e-bba4-41bc-9215-79c9569be232_terseLabel_en-US" xlink:label="lab_gbdc_SpecialtyRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Specialty Retail </link:label>

<link:label id="lab_gbdc_SpecialtyRetailSectorMember_label_en-US" xlink:label="lab_gbdc_SpecialtyRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Specialty Retail Sector [Member] </link:label>

<link:label id="lab_gbdc_SpecialtyRetailSectorMember_documentation_en-US" xlink:label="lab_gbdc_SpecialtyRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Specialty Retail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SpecialtyRetailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_SpecialtyRetailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SpecialtyRetailSectorMember" xlink:to="lab_gbdc_SpecialtyRetailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BeveragesSectorMember_80ce77b6-ee6d-4b47-993b-ee23912bb627_terseLabel_en-US" xlink:label="lab_gbdc_BeveragesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beverages </link:label>

<link:label id="lab_gbdc_BeveragesSectorMember_label_en-US" xlink:label="lab_gbdc_BeveragesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beverages Sector [Member] </link:label>

<link:label id="lab_gbdc_BeveragesSectorMember_documentation_en-US" xlink:label="lab_gbdc_BeveragesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beverages Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BeveragesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_BeveragesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BeveragesSectorMember" xlink:to="lab_gbdc_BeveragesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_0565c1fe-f436-4d08-bd85-16a860dc8b83_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred stock, par value (in dollars per share) </link:label>

<link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_label_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred Stock, Par or Stated Value Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="lab_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember_label_en-US" xlink:label="lab_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Obligation of Advisors And Conflict Related To fees And Expense Risk [Member] </link:label>

<link:label id="lab_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember_documentation_en-US" xlink:label="lab_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Obligation of Advisors And Conflict Related To fees And Expense Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember" xlink:to="lab_gbdc_ObligationOfAdvisorsAndConflictRelatedToFeesAndExpenseRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CommercialServicesAndSuppliesSectorMember_9b4127dc-e067-4d71-bbc9-fe5b67eaee45_terseLabel_en-US" xlink:label="lab_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services and Supplies </link:label>

<link:label id="lab_gbdc_CommercialServicesAndSuppliesSectorMember_label_en-US" xlink:label="lab_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services and Supplies Sector [Member] </link:label>

<link:label id="lab_gbdc_CommercialServicesAndSuppliesSectorMember_documentation_en-US" xlink:label="lab_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services and Supplies Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_CommercialServicesAndSuppliesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:to="lab_gbdc_CommercialServicesAndSuppliesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementMember_89b4f915-26f0-4fbf-b184-f31dcbdbbc27_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdvisoryAgreementMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdvisoryAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdvisoryAgreementMember" xlink:to="lab_gbdc_InvestmentAdvisoryAgreementMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeoTotalCompAmt_terseLabel_en-US" xlink:label="lab_ecd_PeoTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Total Compensation Amount </link:label>

<link:label id="lab_ecd_PeoTotalCompAmt_label_en-US" xlink:label="lab_ecd_PeoTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Total Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeoTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeoTotalCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoTotalCompAmt" xlink:to="lab_ecd_PeoTotalCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AutoComponentsSectorMember_57d203a6-0218-4237-80a9-e34bb76dd85d_terseLabel_en-US" xlink:label="lab_gbdc_AutoComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auto Components </link:label>

<link:label id="lab_gbdc_AutoComponentsSectorMember_label_en-US" xlink:label="lab_gbdc_AutoComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auto Components Sector [Member] </link:label>

<link:label id="lab_gbdc_AutoComponentsSectorMember_documentation_en-US" xlink:label="lab_gbdc_AutoComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auto Components Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AutoComponentsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_AutoComponentsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AutoComponentsSectorMember" xlink:to="lab_gbdc_AutoComponentsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember_89db0073-6efe-4e81-803b-77390a060bf9_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Senior secured </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember_label_en-US" xlink:label="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Senior Secured Loan [Member] </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Senior Secured Loan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritiesSeniorSecuredLoanMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:to="lab_gbdc_DebtSecuritiesSeniorSecuredLoanMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyAbstract_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign Currency [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyAbstract" xlink:to="lab_us-gaap_ForeignCurrencyAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities_3e7861aa-0f1f-4338-858d-c6da65023cb1_terseLabel_en-US" xlink:label="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from (fundings of) revolving loans, net </link:label>

<link:label id="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities_label_en-US" xlink:label="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From (Purchases For) Undrawn Portion Of Revolving Loans, Operating Activities </link:label>

<link:label id="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities_documentation_en-US" xlink:label="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From (Purchases For) Undrawn Portion Of Revolving Loans, Operating Activities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:href="gbdc-20230930.xsd#gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:to="lab_gbdc_ProceedsFromPurchasesForUndrawnPortionOfRevolvingLoansOperatingActivities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit_4f54f15c-dc6d-4fee-a3a1-b74934b5c596_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset coverage ratio per unit (in dollars per unit) </link:label>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit_label_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio Per Unit </link:label>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio Per Unit </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:to="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioPerUnit" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TradingArrByIndTable_terseLabel_en-US" xlink:label="lab_ecd_TradingArrByIndTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangements, by Individual </link:label>

<link:label id="lab_ecd_TradingArrByIndTable_label_en-US" xlink:label="lab_ecd_TradingArrByIndTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangements, by Individual [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TradingArrByIndTable" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TradingArrByIndTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TradingArrByIndTable" xlink:to="lab_ecd_TradingArrByIndTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember_label_en-US" xlink:label="lab_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Volatile On Net Asset Value And Market Value Risk [Member] </link:label>

<link:label id="lab_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember_documentation_en-US" xlink:label="lab_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Volatile On Net Asset Value And Market Value Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember" xlink:to="lab_gbdc_VolatileOnNetAssetValueAndMarketValueRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueInputsLevel3Member_8a8e9529-4f18-4583-8542-db3ad664b763_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Level 3 </link:label>

<link:label id="lab_us-gaap_FairValueInputsLevel3Member_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Inputs, Level 3 [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel3Member" xlink:to="lab_us-gaap_FairValueInputsLevel3Member" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember_931c80c8-1702-4916-a39e-ce1da56ad469_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember_label_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold [Member] </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:to="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyCatchUpThresholdMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_01a029fb-a56e-4369-b59a-5e0eac205172_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest receivable </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Accrued Interest Receivable, Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember_label_en-US" xlink:label="lab_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limited Protection Of Unsecured Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limited Protection Of Unsecured Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LimitedProtectionOfUnsecuredNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember" xlink:to="lab_gbdc_LimitedProtectionOfUnsecuredNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock_8a1e7c15-fb90-483c-b64c-edd345f01aaf_terseLabel_en-US" xlink:label="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Reclassification Taxable Income </link:label>

<link:label id="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock_label_en-US" xlink:label="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Reclassification Taxable Income [Table Text Block] </link:label>

<link:label id="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Reclassification Taxable Income </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:to="lab_gbdc_ScheduleOfReclassificationTaxableIncomeTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO Average Compensation Actually Paid Amount </link:label>

<link:label id="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt_label_en-US" xlink:label="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO Average Compensation Actually Paid Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonPeoNeoAvgCompActuallyPaidAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:to="lab_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LongTermDebtFairValue_ad068302-82a3-485f-9392-febb6618433a_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt, fair value </link:label>

<link:label id="lab_us-gaap_LongTermDebtFairValue_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Fair Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtFairValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue" xlink:to="lab_us-gaap_LongTermDebtFairValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetIncomeLoss_7903b08a-5ecb-4c56-b49b-abf5a39720e2_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase (decrease) in net assets resulting from operations </link:label>

<link:label id="lab_us-gaap_NetIncomeLoss_dca1133b-7cbc-4061-99fa-123924a8c462_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase (decrease) in net assets resulting from operations </link:label>

<link:label id="lab_us-gaap_NetIncomeLoss_27324622-6e88-4d76-a05a-8e958cef09f2_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings available to stockholders </link:label>

<link:label id="lab_us-gaap_NetIncomeLoss_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Income (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss" xlink:to="lab_us-gaap_NetIncomeLoss" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DilutionOfAggregateNetAssetValueRiskMember_label_en-US" xlink:label="lab_gbdc_DilutionOfAggregateNetAssetValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dilution Of Aggregate Net Asset Value Risk [Member] </link:label>

<link:label id="lab_gbdc_DilutionOfAggregateNetAssetValueRiskMember_documentation_en-US" xlink:label="lab_gbdc_DilutionOfAggregateNetAssetValueRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dilution Of Aggregate Net Asset Value Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DilutionOfAggregateNetAssetValueRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DilutionOfAggregateNetAssetValueRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DilutionOfAggregateNetAssetValueRiskMember" xlink:to="lab_gbdc_DilutionOfAggregateNetAssetValueRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ManagementAndIncentiveFeePayable_524d11ac-faf6-4738-b5d7-bb440f4bc459_terseLabel_en-US" xlink:label="lab_gbdc_ManagementAndIncentiveFeePayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and incentive fees payable </link:label>

<link:label id="lab_gbdc_ManagementAndIncentiveFeePayable_label_en-US" xlink:label="lab_gbdc_ManagementAndIncentiveFeePayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management And Incentive Fee Payable </link:label>

<link:label id="lab_gbdc_ManagementAndIncentiveFeePayable_documentation_en-US" xlink:label="lab_gbdc_ManagementAndIncentiveFeePayable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management And Incentive Fee Payable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ManagementAndIncentiveFeePayable" xlink:href="gbdc-20230930.xsd#gbdc_ManagementAndIncentiveFeePayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ManagementAndIncentiveFeePayable" xlink:to="lab_gbdc_ManagementAndIncentiveFeePayable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeContractTypeDomain_cf0af217-fe32-4317-9033-da8ffe975458_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Contract [Domain] </link:label>

<link:label id="lab_us-gaap_DerivativeContractTypeDomain_label_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Contract [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeContractTypeDomain" xlink:to="lab_us-gaap_DerivativeContractTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_e71908cd-af88-4899-8f28-2e4d10fc8059_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign currency translation </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign Currency Transactions and Translations Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:to="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ChangedPeerGroupFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changed Peer Group, Footnote </link:label>

<link:label id="lab_ecd_ChangedPeerGroupFnTextBlock_label_en-US" xlink:label="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Changed Peer Group, Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ChangedPeerGroupFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:to="lab_ecd_ChangedPeerGroupFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FoodAndStaplesRetailingSectorMember_60da5b64-8ac5-4e71-9421-97d5bb15a6c7_terseLabel_en-US" xlink:label="lab_gbdc_FoodAndStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food and Staples Retailing </link:label>

<link:label id="lab_gbdc_FoodAndStaplesRetailingSectorMember_label_en-US" xlink:label="lab_gbdc_FoodAndStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food And Staples Retailing Sector [Member] </link:label>

<link:label id="lab_gbdc_FoodAndStaplesRetailingSectorMember_documentation_en-US" xlink:label="lab_gbdc_FoodAndStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food And Staples Retailing Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FoodAndStaplesRetailingSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_FoodAndStaplesRetailingSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FoodAndStaplesRetailingSectorMember" xlink:to="lab_gbdc_FoodAndStaplesRetailingSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CoSelectedMeasureName_terseLabel_en-US" xlink:label="lab_ecd_CoSelectedMeasureName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Company Selected Measure Name </link:label>

<link:label id="lab_ecd_CoSelectedMeasureName_label_en-US" xlink:label="lab_ecd_CoSelectedMeasureName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Company Selected Measure Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CoSelectedMeasureName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CoSelectedMeasureName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CoSelectedMeasureName" xlink:to="lab_ecd_CoSelectedMeasureName" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember_label_en-US" xlink:label="lab_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Development In Financial Services Industry Risk [Member] </link:label>

<link:label id="lab_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Development In Financial Services Industry Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember" xlink:to="lab_gbdc_AdverseDevelopmentInFinancialServicesIndustryRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EquityInvestmentLossRiskMember_label_en-US" xlink:label="lab_gbdc_EquityInvestmentLossRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Investment Loss Risk [Member] </link:label>

<link:label id="lab_gbdc_EquityInvestmentLossRiskMember_documentation_en-US" xlink:label="lab_gbdc_EquityInvestmentLossRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Investment Loss Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EquityInvestmentLossRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_EquityInvestmentLossRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EquityInvestmentLossRiskMember" xlink:to="lab_gbdc_EquityInvestmentLossRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIssuerAffiliationDomain_3c31cb48-02fc-41ba-8d58-34c056aaed66_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIssuerAffiliationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Issuer Affiliation [Domain] </link:label>

<link:label id="lab_us-gaap_InvestmentIssuerAffiliationDomain_label_en-US" xlink:label="lab_us-gaap_InvestmentIssuerAffiliationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Issuer Affiliation [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIssuerAffiliationDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIssuerAffiliationDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIssuerAffiliationDomain" xlink:to="lab_us-gaap_InvestmentIssuerAffiliationDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount_22d0a5b1-e67b-486c-918a-2b953fb8dc67_terseLabel_en-US" xlink:label="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, received and retained, amount </link:label>

<link:label id="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount_label_en-US" xlink:label="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Received And Retained, Amount </link:label>

<link:label id="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount_documentation_en-US" xlink:label="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Received And Retained, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:href="gbdc-20230930.xsd#gbdc_DebtInstrumentReceivedAndRetainedAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:to="lab_gbdc_DebtInstrumentReceivedAndRetainedAmount" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodValue_d4174f8b-4601-4d9b-b278-8b425f5a448c_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodValue" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repurchases of common stock, net of commission costs </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodValue_7beda557-7b4a-4524-8694-96fa5121c1c2_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Approximate dollar value of shares that have been purchased under the plan </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodValue_ce8bda9a-9f0f-4a0a-9244-32226c8a6abd_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Approximate Dollar Value of Shares that have been Purchased Under the Plan </link:label>

<link:label id="lab_us-gaap_StockRepurchasedDuringPeriodValue_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchased During Period, Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchasedDuringPeriodValue" xlink:to="lab_us-gaap_StockRepurchasedDuringPeriodValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockholdersEquityPeriodIncreaseDecrease_775b5348-d77a-4ae5-ac46-feed67ca1cee_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total increase (decrease) common stock, outstanding value </link:label>

<link:label id="lab_us-gaap_StockholdersEquityPeriodIncreaseDecrease_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stockholders' Equity, Period Increase (Decrease) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityPeriodIncreaseDecrease"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:to="lab_us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_13f83416-c5ec-4458-a5ed-de4b2edd72a8_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CreditAndDefaultRiskMember_label_en-US" xlink:label="lab_gbdc_CreditAndDefaultRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit And Default Risk [Member] </link:label>

<link:label id="lab_gbdc_CreditAndDefaultRiskMember_documentation_en-US" xlink:label="lab_gbdc_CreditAndDefaultRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Credit And Default Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CreditAndDefaultRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_CreditAndDefaultRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CreditAndDefaultRiskMember" xlink:to="lab_gbdc_CreditAndDefaultRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember_7030d5a9-015b-48a7-850d-42175226eb25_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capital Gain Incentive Fee Base </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Capital Gain Incentive Fee Base [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Capital Gain Incentive Fee Base </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:to="lab_gbdc_InvestmentAdvisoryAgreementCapitalGainIncentiveFeeBaseMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember_0fc70cf5-7436-4745-8879-41ed6930cef2_terseLabel_en-US" xlink:label="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel & Luxury Goods </link:label>

<link:label id="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember_label_en-US" xlink:label="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel & Luxury Goods Sector [Member] </link:label>

<link:label id="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember_documentation_en-US" xlink:label="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel & Luxury Goods Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_TextilesApparelLuxuryGoodsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:to="lab_gbdc_TextilesApparelLuxuryGoodsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassA1GCIC2018NoteMember_d0949edb-0f64-4676-aa4d-de6d4da0d27a_terseLabel_en-US" xlink:label="lab_gbdc_ClassA1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-1 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassA1GCIC2018NoteMember_label_en-US" xlink:label="lab_gbdc_ClassA1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-1 GCIC 2018 Note [Member] </link:label>

<link:label id="lab_gbdc_ClassA1GCIC2018NoteMember_documentation_en-US" xlink:label="lab_gbdc_ClassA1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A-1 GCIC 2018 Note </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassA1GCIC2018NoteMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassA1GCIC2018NoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassA1GCIC2018NoteMember" xlink:to="lab_gbdc_ClassA1GCIC2018NoteMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_c89d7a61-e029-4017-b1c8-440d1eab17d4_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized (gain) loss on investments </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_2fff4351-3d88-45cf-83b8-cd2fa03bc9dc_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized (gain) loss on investments </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_7c2a802e-e77e-43d4-b1ca-bd55d3e250f7_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized gain (loss) </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_label_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt and Equity Securities, Realized Gain (Loss) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtAndEquitySecuritiesRealizedGainLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:to="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_f44e8f09-9341-476c-9195-2fa2753cacfa_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>

<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ConflictOfInterestWithAdvisorRiskMember_label_en-US" xlink:label="lab_gbdc_ConflictOfInterestWithAdvisorRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest With Advisor Risk [Member] </link:label>

<link:label id="lab_gbdc_ConflictOfInterestWithAdvisorRiskMember_documentation_en-US" xlink:label="lab_gbdc_ConflictOfInterestWithAdvisorRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest With Advisor Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ConflictOfInterestWithAdvisorRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ConflictOfInterestWithAdvisorRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ConflictOfInterestWithAdvisorRiskMember" xlink:to="lab_gbdc_ConflictOfInterestWithAdvisorRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_MeasureName_terseLabel_en-US" xlink:label="lab_ecd_MeasureName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Name </link:label>

<link:label id="lab_ecd_MeasureName_label_en-US" xlink:label="lab_ecd_MeasureName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measure Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_MeasureName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MeasureName" xlink:to="lab_ecd_MeasureName" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ForgoneRecoveryIndName_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Name </link:label>

<link:label id="lab_ecd_ForgoneRecoveryIndName_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery, Individual Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ForgoneRecoveryIndName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryIndName" xlink:to="lab_ecd_ForgoneRecoveryIndName" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestIncomeOperatingPaidInKind_6d510574-d85c-4e2a-9830-239480afe0f1_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeOperatingPaidInKind" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payment-in-kind interest income </link:label>

<link:label id="lab_us-gaap_InterestIncomeOperatingPaidInKind_label_en-US" xlink:label="lab_us-gaap_InterestIncomeOperatingPaidInKind" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid in Kind </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperatingPaidInKind" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestIncomeOperatingPaidInKind"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeOperatingPaidInKind" xlink:to="lab_us-gaap_InterestIncomeOperatingPaidInKind" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember_label_en-US" xlink:label="lab_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuer On Asset Coverage Test Conflict Risk [Member] </link:label>

<link:label id="lab_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember_documentation_en-US" xlink:label="lab_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuer On Asset Coverage Test Conflict Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember" xlink:to="lab_gbdc_SecuritizationIssuerOnAssetCoverageTestConflictRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember_label_en-US" xlink:label="lab_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limitation Over Ability To Invest In Public Companies Risk [Member] </link:label>

<link:label id="lab_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember_documentation_en-US" xlink:label="lab_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Limitation Over Ability To Invest In Public Companies Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember" xlink:to="lab_gbdc_LimitationOverAbilityToInvestInPublicCompaniesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome_f8e76429-140c-47e7-847d-a44a85d28467_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ordinary Income </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome_6e733300-43ae-4df7-b820-4b9ee2a23206_verboseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ordinary income </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distribution, Ordinary Income </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributionOrdinaryIncome"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:to="lab_us-gaap_InvestmentCompanyDistributionOrdinaryIncome" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardUndrlygSecuritiesAmt_terseLabel_en-US" xlink:label="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Underlying Securities </link:label>

<link:label id="lab_ecd_AwardUndrlygSecuritiesAmt_label_en-US" xlink:label="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Underlying Securities Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardUndrlygSecuritiesAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:to="lab_ecd_AwardUndrlygSecuritiesAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MultilineRetailSectorMember_851a3d6e-d956-4f05-af29-a81d55f19f1a_terseLabel_en-US" xlink:label="lab_gbdc_MultilineRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Multiline Retail </link:label>

<link:label id="lab_gbdc_MultilineRetailSectorMember_label_en-US" xlink:label="lab_gbdc_MultilineRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Multiline Retail Sector [Member] </link:label>

<link:label id="lab_gbdc_MultilineRetailSectorMember_documentation_en-US" xlink:label="lab_gbdc_MultilineRetailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Multiline Retail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MultilineRetailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_MultilineRetailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MultilineRetailSectorMember" xlink:to="lab_gbdc_MultilineRetailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyExcessExpenseReimbursable_dc125933-180f-437a-98ff-3c7fbe5ce2ee_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyExcessExpenseReimbursable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment company, excess expense reimbursable </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyExcessExpenseReimbursable_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyExcessExpenseReimbursable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Reimbursable Excess Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyExcessExpenseReimbursable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyExcessExpenseReimbursable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyExcessExpenseReimbursable" xlink:to="lab_us-gaap_InvestmentCompanyExcessExpenseReimbursable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember_c5329ca6-793e-414b-9f41-ba9614944871_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember_label_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate [Member] </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:to="lab_gbdc_InvestmentManagementAgreementIncentiveRateQuarterlyHurdleRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_srt_ScenarioForecastMember_c1653526-9ea9-4d49-9466-8c3ea7941b0a_terseLabel_en-US" xlink:label="lab_srt_ScenarioForecastMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forecast </link:label>

<link:label id="lab_srt_ScenarioForecastMember_label_en-US" xlink:label="lab_srt_ScenarioForecastMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forecast [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioForecastMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScenarioForecastMember" xlink:to="lab_srt_ScenarioForecastMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_2db4d816-ed5a-4c70-bd74-4283ca11241d_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends and distributions declared per common share (in dollars per share) </link:label>

<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Dividends, Per Share, Declared </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareDeclared" xlink:to="lab_us-gaap_CommonStockDividendsPerShareDeclared" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LackOfLiquidityInInvestmentMember_label_en-US" xlink:label="lab_gbdc_LackOfLiquidityInInvestmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lack Of Liquidity In Investment [Member] </link:label>

<link:label id="lab_gbdc_LackOfLiquidityInInvestmentMember_documentation_en-US" xlink:label="lab_gbdc_LackOfLiquidityInInvestmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lack Of Liquidity In Investment </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LackOfLiquidityInInvestmentMember" xlink:href="gbdc-20230930.xsd#gbdc_LackOfLiquidityInInvestmentMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LackOfLiquidityInInvestmentMember" xlink:to="lab_gbdc_LackOfLiquidityInInvestmentMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year_dcc2f9e8-5ae1-476c-ba53-594274ba7038_terseLabel_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Less Than 1 Year </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year_label_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, Less Than 1 Year </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year_documentation_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, Less Than 1 Year </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:href="gbdc-20230930.xsd#gbdc_LongTermDebtGrossMaturityLessThan1Year"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:to="lab_gbdc_LongTermDebtGrossMaturityLessThan1Year" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_5600eaaf-d4ba-4918-870d-fa805aa9ddf0_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign currency transactions </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_c066687e-60bb-4cd0-9cf7-92a8af7d8de4_negatedLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized (gain) loss on foreign currency transactions </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Foreign Currency Transaction, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:to="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentTerm_b0f427d0-d5f5-45ff-9fd8-526dbcd6d39f_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Term </link:label>

<link:label id="lab_us-gaap_DebtInstrumentTerm_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Term </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm" xlink:to="lab_us-gaap_DebtInstrumentTerm" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentNameDomain_811c7c61-8c3a-4982-92fa-2f64398752a4_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentNameDomain_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain" xlink:to="lab_us-gaap_DebtInstrumentNameDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8370d12f-61c7-4cd7-a2cc-7f965ad3960a_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques [Table] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts_70c07a60-ecf6-4a01-9536-5ec68483b765_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred debt issuance cost </link:label>

<link:label id="lab_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts" xlink:to="lab_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_6c69a3ac-620a-4cc5-b559-6a3888c89174_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capitalized debt issuance costs </link:label>

<link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payments of Debt Issuance Costs </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDebtIssuanceCosts" xlink:to="lab_us-gaap_PaymentsOfDebtIssuanceCosts" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember_label_en-US" xlink:label="lab_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prevention From Receiving Cash From Securitization Issuers Risk [Member] </link:label>

<link:label id="lab_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember_documentation_en-US" xlink:label="lab_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prevention From Receiving Cash From Securitization Issuers Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember" xlink:to="lab_gbdc_PreventionFromReceivingCashFromSecuritizationIssuersRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnrealizedGainOnInvestment_71758434-677b-4207-b9e9-e8e8acc69826_terseLabel_en-US" xlink:label="lab_gbdc_UnrealizedGainOnInvestment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized gain on investment </link:label>

<link:label id="lab_gbdc_UnrealizedGainOnInvestment_label_en-US" xlink:label="lab_gbdc_UnrealizedGainOnInvestment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain On Investment </link:label>

<link:label id="lab_gbdc_UnrealizedGainOnInvestment_documentation_en-US" xlink:label="lab_gbdc_UnrealizedGainOnInvestment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain On Investment </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnrealizedGainOnInvestment" xlink:href="gbdc-20230930.xsd#gbdc_UnrealizedGainOnInvestment"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnrealizedGainOnInvestment" xlink:to="lab_gbdc_UnrealizedGainOnInvestment" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncomeStatementLocationAxis_165fd8ef-482b-4898-ab0b-1c48c296edbf_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Statement Location [Axis] </link:label>

<link:label id="lab_us-gaap_IncomeStatementLocationAxis_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Statement Location [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationAxis" xlink:to="lab_us-gaap_IncomeStatementLocationAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_05e18d7f-dfbd-41e1-b382-86a141f300ad_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Less unamortized debt issuance costs </link:label>

<link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock_1cd03eb4-f150-4373-85cd-f3e52fad64dc_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Investment Company, Financial Highlights </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock" xlink:to="lab_us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ForeignExchangeForwardMember_13caac0a-b06e-4f07-b6e2-f5f20b5ca73f_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign exchange </link:label>

<link:label id="lab_us-gaap_ForeignExchangeForwardMember_label_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Foreign Exchange Forward [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeForwardMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignExchangeForwardMember" xlink:to="lab_us-gaap_ForeignExchangeForwardMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ManagementAndServiceFeesIncentiveRate_cd0021ed-d0c9-4307-bb85-bbb79bef2e88_terseLabel_en-US" xlink:label="lab_us-gaap_ManagementAndServiceFeesIncentiveRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and service fees, incentive rate </link:label>

<link:label id="lab_us-gaap_ManagementAndServiceFeesIncentiveRate_label_en-US" xlink:label="lab_us-gaap_ManagementAndServiceFeesIncentiveRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and Service Fees, Incentive Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementAndServiceFeesIncentiveRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ManagementAndServiceFeesIncentiveRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ManagementAndServiceFeesIncentiveRate" xlink:to="lab_us-gaap_ManagementAndServiceFeesIncentiveRate" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassB1GCIC2018NoteMember_e6621f3d-c39e-46e9-8ac5-c8a9c8bc7f3d_terseLabel_en-US" xlink:label="lab_gbdc_ClassB1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-1 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassB1GCIC2018NoteMember_label_en-US" xlink:label="lab_gbdc_ClassB1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-1 GCIC 2018 Note [Member] </link:label>

<link:label id="lab_gbdc_ClassB1GCIC2018NoteMember_documentation_en-US" xlink:label="lab_gbdc_ClassB1GCIC2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class B-1 GCIC 2018 Note </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassB1GCIC2018NoteMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassB1GCIC2018NoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassB1GCIC2018NoteMember" xlink:to="lab_gbdc_ClassB1GCIC2018NoteMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AirlinesSectorMember_cf0ad183-1ba9-4819-a92b-627a15e918b8_terseLabel_en-US" xlink:label="lab_gbdc_AirlinesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Airlines </link:label>

<link:label id="lab_gbdc_AirlinesSectorMember_label_en-US" xlink:label="lab_gbdc_AirlinesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Airlines Sector [Member] </link:label>

<link:label id="lab_gbdc_AirlinesSectorMember_documentation_en-US" xlink:label="lab_gbdc_AirlinesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Airlines Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AirlinesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_AirlinesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AirlinesSectorMember" xlink:to="lab_gbdc_AirlinesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_OtherPerfMeasureAmt_terseLabel_en-US" xlink:label="lab_ecd_OtherPerfMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Performance Measure, Amount </link:label>

<link:label id="lab_ecd_OtherPerfMeasureAmt_label_en-US" xlink:label="lab_ecd_OtherPerfMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Performance Measure, Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_OtherPerfMeasureAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_OtherPerfMeasureAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_OtherPerfMeasureAmt" xlink:to="lab_ecd_OtherPerfMeasureAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnsecuredNotesRiskMember_label_en-US" xlink:label="lab_gbdc_UnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_UnsecuredNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_UnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnsecuredNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_UnsecuredNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnsecuredNotesRiskMember" xlink:to="lab_gbdc_UnsecuredNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ChemicalsSectorMember_9553b2dd-3f13-43db-8a1d-306fafa88e4e_terseLabel_en-US" xlink:label="lab_us-gaap_ChemicalsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Chemicals </link:label>

<link:label id="lab_us-gaap_ChemicalsSectorMember_label_en-US" xlink:label="lab_us-gaap_ChemicalsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Chemicals Sector [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChemicalsSectorMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ChemicalsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ChemicalsSectorMember" xlink:to="lab_us-gaap_ChemicalsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus_29fa121d-f6b1-4902-a41d-13dfcc0642ae_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value non-accrual loan </link:label>

<link:label id="lab_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus_label_en-US" xlink:label="lab_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus" xlink:to="lab_us-gaap_FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes_299ccd17-8abf-4824-867c-7779c4ab62f7_terseLabel_en-US" xlink:label="lab_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax basis of investments, cost for income tax purposes </link:label>

<link:label id="lab_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes_label_en-US" xlink:label="lab_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Tax Basis, Cost </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:to="lab_us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestExpense_994783bd-71c0-4428-a748-5b6c78b87bab_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest and other debt financing expenses </link:label>

<link:label id="lab_us-gaap_InterestExpense_label_en-US" xlink:label="lab_us-gaap_InterestExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpense" xlink:to="lab_us-gaap_InterestExpense" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage_7e942359-e1ed-4a34-8588-93498a60c862_terseLabel_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line of credit facility, commitment fee percentage </link:label>

<link:label id="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage_label_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line Of Credit Facility, Aggregate Commitments Each Day, Percentage </link:label>

<link:label id="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage_documentation_en-US" xlink:label="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Line Of Credit Facility, Aggregate Commitments Each Day, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:href="gbdc-20230930.xsd#gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:to="lab_gbdc_LineOfCreditFacilityAggregateCommitmentsEachDayPercentage" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities_3d783890-7c33-4afb-9c51-0340f276185d_negatedTerseLabel_en-US" xlink:label="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion of discounts and amortization of premiums on issued debt securities </link:label>

<link:label id="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities_label_en-US" xlink:label="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion (Amortization) of Discounts and Premiums, Debt Securities </link:label>

<link:label id="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities_documentation_en-US" xlink:label="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion (Amortization) of Discounts and Premiums, Debt Securities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:href="gbdc-20230930.xsd#gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:to="lab_gbdc_AccretionAmortizationOfDiscountsAndPremiumsDebtSecurities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember_label_en-US" xlink:label="lab_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Optional Redemption Provision On Unsecured Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Optional Redemption Provision On Unsecured Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember" xlink:to="lab_gbdc_OptionalRedemptionProvisionOnUnsecuredNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis_8d879076-6650-4305-b5e4-e21137908f54_terseLabel_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract, Identifier [Axis] </link:label>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis_label_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract, Identifier [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis" xlink:to="lab_us-gaap_OpenForwardForeignCurrencyContractIdentifierAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FinanceLoansAndLeasesReceivablePolicy_1ac50d65-d609-4f51-b73f-79ff54871c06_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLoansAndLeasesReceivablePolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-accrual loans </link:label>

<link:label id="lab_us-gaap_FinanceLoansAndLeasesReceivablePolicy_label_en-US" xlink:label="lab_us-gaap_FinanceLoansAndLeasesReceivablePolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financing Receivable [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLoansAndLeasesReceivablePolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLoansAndLeasesReceivablePolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLoansAndLeasesReceivablePolicy" xlink:to="lab_us-gaap_FinanceLoansAndLeasesReceivablePolicy" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member_ac1d575a-1b9c-41ee-95da-0cdaff0d70d5_terseLabel_en-US" xlink:label="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility, Portion Maturing February 11, 2026 </link:label>

<link:label id="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member_label_en-US" xlink:label="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility, Portion Maturing February 11, 2026 [Member] </link:label>

<link:label id="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member_documentation_en-US" xlink:label="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> JPM Credit Facility, Portion Maturing February 11, 2026 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:href="gbdc-20230930.xsd#gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:to="lab_gbdc_JPMCreditFacilityPortionMaturingFebruary112026Member" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TradingArrAxis_terseLabel_en-US" xlink:label="lab_ecd_TradingArrAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement: </link:label>

<link:label id="lab_ecd_TradingArrAxis_label_en-US" xlink:label="lab_ecd_TradingArrAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TradingArrAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TradingArrAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TradingArrAxis" xlink:to="lab_ecd_TradingArrAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NonQualifyingAssetMember_ccdd955a-6e43-4400-87f7-de093cf064a8_terseLabel_en-US" xlink:label="lab_gbdc_NonQualifyingAssetMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-qualifying Asset </link:label>

<link:label id="lab_gbdc_NonQualifyingAssetMember_label_en-US" xlink:label="lab_gbdc_NonQualifyingAssetMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-qualifying Asset [Member] </link:label>

<link:label id="lab_gbdc_NonQualifyingAssetMember_documentation_en-US" xlink:label="lab_gbdc_NonQualifyingAssetMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-qualifying Asset </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NonQualifyingAssetMember" xlink:href="gbdc-20230930.xsd#gbdc_NonQualifyingAssetMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NonQualifyingAssetMember" xlink:to="lab_gbdc_NonQualifyingAssetMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestIncomeOperatingPaidInCash_88af8ac9-d303-45d7-9c48-41d3c77d774d_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeOperatingPaidInCash" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest income </link:label>

<link:label id="lab_us-gaap_InterestIncomeOperatingPaidInCash_label_en-US" xlink:label="lab_us-gaap_InterestIncomeOperatingPaidInCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid in Cash </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperatingPaidInCash" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestIncomeOperatingPaidInCash"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeOperatingPaidInCash" xlink:to="lab_us-gaap_InterestIncomeOperatingPaidInCash" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtInstrumentDefaultsRiskMember_label_en-US" xlink:label="lab_gbdc_DebtInstrumentDefaultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument Defaults Risk [Member] </link:label>

<link:label id="lab_gbdc_DebtInstrumentDefaultsRiskMember_documentation_en-US" xlink:label="lab_gbdc_DebtInstrumentDefaultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument Defaults Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtInstrumentDefaultsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtInstrumentDefaultsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtInstrumentDefaultsRiskMember" xlink:to="lab_gbdc_DebtInstrumentDefaultsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UseOfEstimates_819ddfe2-b2c3-46e0-977b-8e4226f075ad_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Use of estimates </link:label>

<link:label id="lab_us-gaap_UseOfEstimates_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UseOfEstimates" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UseOfEstimates"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates" xlink:to="lab_us-gaap_UseOfEstimates" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList_91054cf7-d977-499d-a823-bba82268df25_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] </link:label>

<link:label id="lab_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList_label_en-US" xlink:label="lab_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList" xlink:to="lab_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CybersecurityRiskMember_label_en-US" xlink:label="lab_gbdc_CybersecurityRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cybersecurity Risk [Member] </link:label>

<link:label id="lab_gbdc_CybersecurityRiskMember_documentation_en-US" xlink:label="lab_gbdc_CybersecurityRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cybersecurity Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CybersecurityRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_CybersecurityRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CybersecurityRiskMember" xlink:to="lab_gbdc_CybersecurityRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LongtermDebtTypeDomain_5e8412b7-1f91-40e5-bcec-261e296e76ca_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Type [Domain] </link:label>

<link:label id="lab_us-gaap_LongtermDebtTypeDomain_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain" xlink:to="lab_us-gaap_LongtermDebtTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityFileNumber_c0513d74-4e09-4ce3-952d-5d2bc0fd7e96_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securities Act File Number </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFileNumber" xlink:to="lab_dei_EntityFileNumber" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LossContingenciesTable_58fa9977-1061-454d-99c9-61b2886253c9_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loss Contingencies [Table] </link:label>

<link:label id="lab_us-gaap_LossContingenciesTable_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Loss Contingencies [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable" xlink:to="lab_us-gaap_LossContingenciesTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OilGasConsumableFuelsSectorMember_8c936412-8d6f-4383-a9b7-e2f8cc4d78e9_terseLabel_en-US" xlink:label="lab_gbdc_OilGasConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas & Consumable Fuels </link:label>

<link:label id="lab_gbdc_OilGasConsumableFuelsSectorMember_label_en-US" xlink:label="lab_gbdc_OilGasConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas & Consumable Fuels Sector [Member] </link:label>

<link:label id="lab_gbdc_OilGasConsumableFuelsSectorMember_documentation_en-US" xlink:label="lab_gbdc_OilGasConsumableFuelsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Oil, Gas & Consumable Fuels Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OilGasConsumableFuelsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_OilGasConsumableFuelsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OilGasConsumableFuelsSectorMember" xlink:to="lab_gbdc_OilGasConsumableFuelsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FluctuationOnMarketPriceRiskMember_label_en-US" xlink:label="lab_gbdc_FluctuationOnMarketPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation On Market Price Risk [Member] </link:label>

<link:label id="lab_gbdc_FluctuationOnMarketPriceRiskMember_documentation_en-US" xlink:label="lab_gbdc_FluctuationOnMarketPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation On Market Price Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FluctuationOnMarketPriceRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_FluctuationOnMarketPriceRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FluctuationOnMarketPriceRiskMember" xlink:to="lab_gbdc_FluctuationOnMarketPriceRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution_5c3a435e-3c03-422e-9c02-99659ab4d69b_verboseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Return of capital </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Tax Return of Capital Distribution </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution" xlink:to="lab_us-gaap_InvestmentCompanyTaxReturnOfCapitalDistribution" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_b9bbd6e6-0789-4a5d-8cef-6a61469cd639_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of deferred loan origination fees, net </link:label>

<link:label id="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of Deferred Loan Origination Fees, Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfDeferredLoanOriginationFeesNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:to="lab_us-gaap_AmortizationOfDeferredLoanOriginationFeesNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NonUSCompanyRiskMember_label_en-US" xlink:label="lab_gbdc_NonUSCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-U.S. Company Risk [Member] </link:label>

<link:label id="lab_gbdc_NonUSCompanyRiskMember_documentation_en-US" xlink:label="lab_gbdc_NonUSCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-U.S. Company Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NonUSCompanyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_NonUSCompanyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NonUSCompanyRiskMember" xlink:to="lab_gbdc_NonUSCompanyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritizationTypeDomain_91272810-4aa6-41bd-9403-c1e949327603_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type [Domain] </link:label>

<link:label id="lab_gbdc_DebtSecuritizationTypeDomain_label_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type [Domain] </link:label>

<link:label id="lab_gbdc_DebtSecuritizationTypeDomain_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritizationTypeDomain" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritizationTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritizationTypeDomain" xlink:to="lab_gbdc_DebtSecuritizationTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ExpensesPaidMember_e4b6ef6c-bf16-43e4-a043-812cd6f500b9_terseLabel_en-US" xlink:label="lab_gbdc_ExpensesPaidMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Expenses Paid </link:label>

<link:label id="lab_gbdc_ExpensesPaidMember_label_en-US" xlink:label="lab_gbdc_ExpensesPaidMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Expenses Paid [Member] </link:label>

<link:label id="lab_gbdc_ExpensesPaidMember_documentation_en-US" xlink:label="lab_gbdc_ExpensesPaidMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Expenses Paid </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ExpensesPaidMember" xlink:href="gbdc-20230930.xsd#gbdc_ExpensesPaidMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ExpensesPaidMember" xlink:to="lab_gbdc_ExpensesPaidMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentBasisSpreadVariableRate_58913420-96be-40e0-80f2-7de31ba9609c_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentBasisSpreadVariableRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, basis spread, variable rate </link:label>

<link:label id="lab_us-gaap_InvestmentBasisSpreadVariableRate_label_en-US" xlink:label="lab_us-gaap_InvestmentBasisSpreadVariableRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Basis Spread, Variable Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentBasisSpreadVariableRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentBasisSpreadVariableRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentBasisSpreadVariableRate" xlink:to="lab_us-gaap_InvestmentBasisSpreadVariableRate" xlink:type="arc" order="1"/>

<link:label id="lab_dei_AuditorFirmId_969dfad2-a17a-4014-bd28-a3cac5d88283_terseLabel_en-US" xlink:label="lab_dei_AuditorFirmId" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auditor Firm ID </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorFirmId" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AuditorFirmId"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorFirmId" xlink:to="lab_dei_AuditorFirmId" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityShellCompany_c6bfd174-e4f2-4dfa-bdb6-e96cf24a8973_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Shell Company </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityShellCompany"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityShellCompany" xlink:to="lab_dei_EntityShellCompany" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_IndustrialConglomeratesSectorMember_2f9c8231-78f8-48ed-8185-f7ce1331dc4a_terseLabel_en-US" xlink:label="lab_gbdc_IndustrialConglomeratesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industrial Conglomerates </link:label>

<link:label id="lab_gbdc_IndustrialConglomeratesSectorMember_label_en-US" xlink:label="lab_gbdc_IndustrialConglomeratesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industrial Conglomerates Sector [Member] </link:label>

<link:label id="lab_gbdc_IndustrialConglomeratesSectorMember_documentation_en-US" xlink:label="lab_gbdc_IndustrialConglomeratesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industrial Conglomerates Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_IndustrialConglomeratesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_IndustrialConglomeratesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_IndustrialConglomeratesSectorMember" xlink:to="lab_gbdc_IndustrialConglomeratesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_RestatementDeterminationDate_terseLabel_en-US" xlink:label="lab_ecd_RestatementDeterminationDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement Determination Date </link:label>

<link:label id="lab_ecd_RestatementDeterminationDate_label_en-US" xlink:label="lab_ecd_RestatementDeterminationDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Restatement Determination Date </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDeterminationDate" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_RestatementDeterminationDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_RestatementDeterminationDate" xlink:to="lab_ecd_RestatementDeterminationDate" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember_3375b693-19a0-463d-beef-7f2cc2560556_terseLabel_en-US" xlink:label="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management and Development </link:label>

<link:label id="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember_label_en-US" xlink:label="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management And Development Sector [Member] </link:label>

<link:label id="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember_documentation_en-US" xlink:label="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Real Estate Management And Development Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_RealEstateManagementAndDevelopmentSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:to="lab_gbdc_RealEstateManagementAndDevelopmentSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_Rule10b51ArrAdoptedFlag_terseLabel_en-US" xlink:label="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rule 10b5-1 Arrangement Adopted </link:label>

<link:label id="lab_ecd_Rule10b51ArrAdoptedFlag_label_en-US" xlink:label="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rule 10b5-1 Arrangement Adopted [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_Rule10b51ArrAdoptedFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:to="lab_ecd_Rule10b51ArrAdoptedFlag" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_acbf079d-3d0f-4f8d-b02a-b4ecdb6a6aec_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and cash equivalents, foreign currencies, restricted cash and cash equivalents, beginning of period </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_e39fe825-1254-43da-8d47-42c6573f1e28_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and cash equivalents, foreign currencies, restricted cash and cash equivalents, end of period </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_f52b3bc7-9941-4cbe-b231-d2e6db0f36ae_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total cash and cash equivalents, foreign currencies and restricted cash and cash equivalents shown in the Consolidated Statements of Cash Flows </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueByAssetClassAxis_57b214ad-45ba-487a-8616-90be21093d72_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Class [Axis] </link:label>

<link:label id="lab_us-gaap_FairValueByAssetClassAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Class [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByAssetClassAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByAssetClassAxis" xlink:to="lab_us-gaap_FairValueByAssetClassAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuritiesPurchasedByAdvisorRiskMember_label_en-US" xlink:label="lab_gbdc_SecuritiesPurchasedByAdvisorRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securities Purchased By Advisor Risk [Member] </link:label>

<link:label id="lab_gbdc_SecuritiesPurchasedByAdvisorRiskMember_documentation_en-US" xlink:label="lab_gbdc_SecuritiesPurchasedByAdvisorRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securities Purchased By Advisor Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuritiesPurchasedByAdvisorRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuritiesPurchasedByAdvisorRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuritiesPurchasedByAdvisorRiskMember" xlink:to="lab_gbdc_SecuritiesPurchasedByAdvisorRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AClassC12018NotesMember_af143bc5-1e16-4594-8c20-7f9fd92613fb_terseLabel_en-US" xlink:label="lab_gbdc_AClassC12018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-1 2018 Notes </link:label>

<link:label id="lab_gbdc_AClassC12018NotesMember_label_en-US" xlink:label="lab_gbdc_AClassC12018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-1 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AClassC12018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AClassC12018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> A Class C-1 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AClassC12018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AClassC12018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AClassC12018NotesMember" xlink:to="lab_gbdc_AClassC12018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockSharesIssued_9c26eed2-f2f3-4e00-8890-0705beb086f9_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common stock, shares issued (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesIssued_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued" xlink:to="lab_us-gaap_CommonStockSharesIssued" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ExciseTaxExpenseReductionNet_eeae383f-45d3-4926-85b9-0cceccdfed78_terseLabel_en-US" xlink:label="lab_gbdc_ExciseTaxExpenseReductionNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Excise tax expense (reduction), net </link:label>

<link:label id="lab_gbdc_ExciseTaxExpenseReductionNet_label_en-US" xlink:label="lab_gbdc_ExciseTaxExpenseReductionNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Excise Tax Expense (Reduction), Net </link:label>

<link:label id="lab_gbdc_ExciseTaxExpenseReductionNet_documentation_en-US" xlink:label="lab_gbdc_ExciseTaxExpenseReductionNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Excise Tax Expense (Reduction), Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ExciseTaxExpenseReductionNet" xlink:href="gbdc-20230930.xsd#gbdc_ExciseTaxExpenseReductionNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ExciseTaxExpenseReductionNet" xlink:to="lab_gbdc_ExciseTaxExpenseReductionNet" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AssetsFairValueDisclosure_e18b1afd-38dc-452f-9376-d7983af5feb1_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total assets, at fair value: </link:label>

<link:label id="lab_us-gaap_AssetsFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assets, Fair Value Disclosure </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsFairValueDisclosure"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsFairValueDisclosure" xlink:to="lab_us-gaap_AssetsFairValueDisclosure" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LongTermDebt_76b8787d-ca8f-4d50-8f1b-c76b0a68effd_totalLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt less unamortized debt issuance costs </link:label>

<link:label id="lab_us-gaap_LongTermDebt_label_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt" xlink:to="lab_us-gaap_LongTermDebt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_02d7fc65-a468-46a6-a023-ffdc08a891f0_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of stock, consideration received on transaction </link:label>

<link:label id="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_label_en-US" xlink:label="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Sale of Stock, Consideration Received on Transaction </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:to="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CapitalGainMember_5ed14814-b605-43f4-9f69-c47203c67368_terseLabel_en-US" xlink:label="lab_gbdc_CapitalGainMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> From capital gains </link:label>

<link:label id="lab_gbdc_CapitalGainMember_label_en-US" xlink:label="lab_gbdc_CapitalGainMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capital Gain [Member] </link:label>

<link:label id="lab_gbdc_CapitalGainMember_documentation_en-US" xlink:label="lab_gbdc_CapitalGainMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Capital Gain </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CapitalGainMember" xlink:href="gbdc-20230930.xsd#gbdc_CapitalGainMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CapitalGainMember" xlink:to="lab_gbdc_CapitalGainMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_f8f53f1b-3f43-40d4-ba38-e717fb3847fa_totalLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized gain (loss) on investment transactions </link:label>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_09662780-5c83-49f1-a679-6957d0e17bb4_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized gain (loss) on investment transactions </link:label>

<link:label id="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_label_en-US" xlink:label="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:to="lab_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityAddressAddressLine1_1dce1441-3ddc-45e7-8d13-c53c37340e66_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Address, Address Line One </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine1" xlink:to="lab_dei_EntityAddressAddressLine1" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityAddressAddressLine2_c295824f-0ba4-424f-b313-7f276c2c81bf_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Address, Address Line Two </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine2"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine2" xlink:to="lab_dei_EntityAddressAddressLine2" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_4a440455-b4d9-4daa-a5e6-d708dd3b3a61_totalLabel_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net gain (loss) on investment transactions </link:label>

<link:label id="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_label_en-US" xlink:label="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:to="lab_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease_ba503c64-5e9c-4278-89e8-990a5b28e545_totalLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total increase (decrease) common stock, outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Issued During Period, Shares, Period Increase (Decrease) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtObligationRiskMember_label_en-US" xlink:label="lab_gbdc_DebtObligationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Obligation Risk [Member] </link:label>

<link:label id="lab_gbdc_DebtObligationRiskMember_documentation_en-US" xlink:label="lab_gbdc_DebtObligationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Obligation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtObligationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtObligationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtObligationRiskMember" xlink:to="lab_gbdc_DebtObligationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventTable_c0cae133-9e6f-4525-9bb6-ed0f92ef64f3_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event [Table] </link:label>

<link:label id="lab_us-gaap_SubsequentEventTable_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTable" xlink:to="lab_us-gaap_SubsequentEventTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_462f8a23-b602-478f-a8b6-37fab640f9ff_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in cash and cash equivalents, foreign currencies, restricted cash and cash equivalents </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventMember_0e6c2a81-e125-4587-a9c5-efeaeba3cef5_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event </link:label>

<link:label id="lab_us-gaap_SubsequentEventMember_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Event [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember" xlink:to="lab_us-gaap_SubsequentEventMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedBalanceShares_3bb52e6d-18fc-4463-a05d-96f8400fad65_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedBalanceShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment owned, balance, shares (in shares) </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedBalanceShares_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedBalanceShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Balance, Shares </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedBalanceShares" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedBalanceShares"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedBalanceShares" xlink:to="lab_us-gaap_InvestmentOwnedBalanceShares" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FoodStaplesRetailingSectorMember_a50cbdb1-90dd-4030-a5b9-f424f81b1b2e_terseLabel_en-US" xlink:label="lab_gbdc_FoodStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food & Staples Retailing </link:label>

<link:label id="lab_gbdc_FoodStaplesRetailingSectorMember_label_en-US" xlink:label="lab_gbdc_FoodStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food & Staples Retailing Sector [Member] </link:label>

<link:label id="lab_gbdc_FoodStaplesRetailingSectorMember_documentation_en-US" xlink:label="lab_gbdc_FoodStaplesRetailingSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Food & Staples Retailing Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FoodStaplesRetailingSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_FoodStaplesRetailingSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FoodStaplesRetailingSectorMember" xlink:to="lab_gbdc_FoodStaplesRetailingSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncomeStatementAbstract_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Statement [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="lab_us-gaap_IncomeStatementAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfInvestmentsLineItems_74aec7e1-4d03-4f09-8da8-dd10044eb0f2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Investments [Line Items] </link:label>

<link:label id="lab_us-gaap_ScheduleOfInvestmentsLineItems_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Investments [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems" xlink:to="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NonCashDividendsCapitalized_fffc09a1-d3f6-4ac4-85a2-e479040f117b_negatedTerseLabel_en-US" xlink:label="lab_gbdc_NonCashDividendsCapitalized" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-cash dividends capitalized </link:label>

<link:label id="lab_gbdc_NonCashDividendsCapitalized_label_en-US" xlink:label="lab_gbdc_NonCashDividendsCapitalized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-cash Dividends Capitalized </link:label>

<link:label id="lab_gbdc_NonCashDividendsCapitalized_documentation_en-US" xlink:label="lab_gbdc_NonCashDividendsCapitalized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-cash Dividends Capitalized </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NonCashDividendsCapitalized" xlink:href="gbdc-20230930.xsd#gbdc_NonCashDividendsCapitalized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NonCashDividendsCapitalized" xlink:to="lab_gbdc_NonCashDividendsCapitalized" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ValuationTechniqueAxis_346b8bb0-4fee-4352-8a22-818553d3260c_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation Approach and Technique [Axis] </link:label>

<link:label id="lab_us-gaap_ValuationTechniqueAxis_label_en-US" xlink:label="lab_us-gaap_ValuationTechniqueAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation Approach and Technique [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ValuationTechniqueAxis" xlink:to="lab_us-gaap_ValuationTechniqueAxis" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_InsiderTrdPoliciesProcAdoptedFlag_terseLabel_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Policies and Procedures Adopted </link:label>

<link:label id="lab_ecd_InsiderTrdPoliciesProcAdoptedFlag_label_en-US" xlink:label="lab_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Policies and Procedures Adopted [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_InsiderTrdPoliciesProcAdoptedFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:to="lab_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_35b3306c-dd33-4a03-9c96-b927949d1f3d_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money market funds </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash and Cash Equivalents, Fair Value Disclosure </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:to="lab_us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetIncomeLossAbstract_120a36d4-1a9b-4282-8f8b-dfe6fc86a837_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase (decrease) in net assets resulting from operations </link:label>

<link:label id="lab_us-gaap_NetIncomeLossAbstract_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Income (Loss) Attributable to Parent [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAbstract" xlink:to="lab_us-gaap_NetIncomeLossAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncentiveFeeExpense_22cf6b36-2bac-430e-9449-9af355815d9e_terseLabel_en-US" xlink:label="lab_us-gaap_IncentiveFeeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Incentive fee </link:label>

<link:label id="lab_us-gaap_IncentiveFeeExpense_label_en-US" xlink:label="lab_us-gaap_IncentiveFeeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Incentive Fee Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncentiveFeeExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncentiveFeeExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncentiveFeeExpense" xlink:to="lab_us-gaap_IncentiveFeeExpense" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsLineItems_27a93338-0465-46c6-9188-d227ada6c3d3_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Line Items] </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyFinancialHighlightsLineItems_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyFinancialHighlightsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Financial Highlights [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyFinancialHighlightsLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyFinancialHighlightsLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyFinancialHighlightsLineItems" xlink:to="lab_us-gaap_InvestmentCompanyFinancialHighlightsLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HouseholdDurablesSectorMember_efa7ec15-df4f-4fae-b448-82a59b585034_terseLabel_en-US" xlink:label="lab_gbdc_HouseholdDurablesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Durables </link:label>

<link:label id="lab_gbdc_HouseholdDurablesSectorMember_label_en-US" xlink:label="lab_gbdc_HouseholdDurablesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Durables Sector [Member] </link:label>

<link:label id="lab_gbdc_HouseholdDurablesSectorMember_documentation_en-US" xlink:label="lab_gbdc_HouseholdDurablesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Durables Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HouseholdDurablesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HouseholdDurablesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HouseholdDurablesSectorMember" xlink:to="lab_gbdc_HouseholdDurablesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DividendIncomeOperatingNonCash_8490193f-328a-44bb-b9b2-e3e586779da3_terseLabel_en-US" xlink:label="lab_gbdc_DividendIncomeOperatingNonCash" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-cash dividend income </link:label>

<link:label id="lab_gbdc_DividendIncomeOperatingNonCash_label_en-US" xlink:label="lab_gbdc_DividendIncomeOperatingNonCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Income, Operating, Non-Cash </link:label>

<link:label id="lab_gbdc_DividendIncomeOperatingNonCash_documentation_en-US" xlink:label="lab_gbdc_DividendIncomeOperatingNonCash" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Income, Operating, Non-Cash </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DividendIncomeOperatingNonCash" xlink:href="gbdc-20230930.xsd#gbdc_DividendIncomeOperatingNonCash"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DividendIncomeOperatingNonCash" xlink:to="lab_gbdc_DividendIncomeOperatingNonCash" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquitySecuritiesByIndustryAxis_26b65f1f-2348-44d2-88b4-4c1ffce5048e_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesByIndustryAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Sector [Axis] </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesByIndustryAxis_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesByIndustryAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Industry Sector [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesByIndustryAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquitySecuritiesByIndustryAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesByIndustryAxis" xlink:to="lab_us-gaap_EquitySecuritiesByIndustryAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BankruptcyOnDebtSecuritiesRiskMember_label_en-US" xlink:label="lab_gbdc_BankruptcyOnDebtSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Bankruptcy On Debt Securities Risk [Member] </link:label>

<link:label id="lab_gbdc_BankruptcyOnDebtSecuritiesRiskMember_documentation_en-US" xlink:label="lab_gbdc_BankruptcyOnDebtSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Bankruptcy On Debt Securities Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BankruptcyOnDebtSecuritiesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_BankruptcyOnDebtSecuritiesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BankruptcyOnDebtSecuritiesRiskMember" xlink:to="lab_gbdc_BankruptcyOnDebtSecuritiesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FinancialInstrumentAxis_40acd4f0-6a7b-41bb-80dc-70fafa631e06_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financial Instrument [Axis] </link:label>

<link:label id="lab_us-gaap_FinancialInstrumentAxis_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Financial Instrument [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialInstrumentAxis" xlink:to="lab_us-gaap_FinancialInstrumentAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestReceivable_926a1896-39b6-480e-8683-7e9b4d71da93_terseLabel_en-US" xlink:label="lab_us-gaap_InterestReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest receivable </link:label>

<link:label id="lab_us-gaap_InterestReceivable_label_en-US" xlink:label="lab_us-gaap_InterestReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Receivable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestReceivable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestReceivable" xlink:to="lab_us-gaap_InterestReceivable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember_label_en-US" xlink:label="lab_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assuming Liabilities Of Securitization Issuer Risk [Member] </link:label>

<link:label id="lab_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember_documentation_en-US" xlink:label="lab_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assuming Liabilities Of Securitization Issuer Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember" xlink:to="lab_gbdc_AssumingLiabilitiesOfSecuritizationIssuerRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember_label_en-US" xlink:label="lab_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Treatment Of A Non-U.S. Stockholder's Jurisdiction Risk [Member] </link:label>

<link:label id="lab_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember_documentation_en-US" xlink:label="lab_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Treatment Of A Non-U.S. Stockholder's Jurisdiction Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember" xlink:to="lab_gbdc_TaxTreatmentOfANonUSStockholdersJurisdictionRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TotalShareholderRtnAmt_terseLabel_en-US" xlink:label="lab_ecd_TotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Shareholder Return Amount </link:label>

<link:label id="lab_ecd_TotalShareholderRtnAmt_label_en-US" xlink:label="lab_ecd_TotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Shareholder Return Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TotalShareholderRtnAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TotalShareholderRtnAmt" xlink:to="lab_ecd_TotalShareholderRtnAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_dbe6e3d7-b6a9-4c21-992d-aa6cfb56fad7_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Purchases of common stock (Note 12) </link:label>

<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payments for Repurchase of Common Stock </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityCommonStockSharesOutstanding_c370ca3e-f13f-428b-9822-9bf52e408f2c_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCommonStockSharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding" xlink:to="lab_dei_EntityCommonStockSharesOutstanding" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AdjToPeoCompFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AdjToPeoCompFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment To PEO Compensation, Footnote </link:label>

<link:label id="lab_ecd_AdjToPeoCompFnTextBlock_label_en-US" xlink:label="lab_ecd_AdjToPeoCompFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment To PEO Compensation, Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToPeoCompFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AdjToPeoCompFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AdjToPeoCompFnTextBlock" xlink:to="lab_ecd_AdjToPeoCompFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_0e525542-f89c-4365-87e9-409e2d3081d6_terseLabel_en-US" xlink:label="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Supplemental disclosure of non-cash financing activities: </link:label>

<link:label id="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="lab_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_6afda597-676a-4955-9562-70d1a06b30ba_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Hierarchy and NAV [Axis] </link:label>

<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_label_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Hierarchy and NAV [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_aa78cca6-1c01-4950-a7dc-0753df14c169_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributable earnings (losses) </link:label>

<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_cf52d2fc-8462-4306-9a47-e1965b194daa_totalLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total accumulated earnings (deficit) – book basis </link:label>

<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RoadAndRailSectorMember_c6c2daa0-7a33-4f32-b1ac-80b62c5e0f73_terseLabel_en-US" xlink:label="lab_gbdc_RoadAndRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road and Rail </link:label>

<link:label id="lab_gbdc_RoadAndRailSectorMember_label_en-US" xlink:label="lab_gbdc_RoadAndRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road And Rail Sector [Member] </link:label>

<link:label id="lab_gbdc_RoadAndRailSectorMember_documentation_en-US" xlink:label="lab_gbdc_RoadAndRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road And Rail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RoadAndRailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_RoadAndRailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RoadAndRailSectorMember" xlink:to="lab_gbdc_RoadAndRailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable_34e37683-8f76-4c0d-9243-4a4bd1bbbfa6_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other income not currently taxable </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Income Not Currently Taxable </link:label>

<link:label id="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Other Income Not Currently Taxable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:to="lab_gbdc_InvestmentCompanyOtherIncomeNotCurrentlyTaxable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_d54534e3-08f7-4ee5-b0a8-3b865f361434_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, face amount </link:label>

<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Face Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentFaceAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentsAtFairValueMember_34930a9f-f1c2-40e0-ae31-3ca62317b221_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentsAtFairValueMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, at Fair Value </link:label>

<link:label id="lab_gbdc_InvestmentsAtFairValueMember_label_en-US" xlink:label="lab_gbdc_InvestmentsAtFairValueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, At Fair Value [Member] </link:label>

<link:label id="lab_gbdc_InvestmentsAtFairValueMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentsAtFairValueMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, At Fair Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentsAtFairValueMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentsAtFairValueMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentsAtFairValueMember" xlink:to="lab_gbdc_InvestmentsAtFairValueMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityAddressStateOrProvince_6b8c0479-912f-4021-836f-1c509b77bdf2_terseLabel_en-US" xlink:label="lab_dei_EntityAddressStateOrProvince" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Address, State or Province </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressStateOrProvince" xlink:to="lab_dei_EntityAddressStateOrProvince" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Total Shareholder Return </link:label>

<link:label id="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Total Shareholder Return [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7782cc17-7fc6-42f8-80ff-e9af039682d2_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash flows from operating activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SoutheastRegionMember_dcae6a27-016d-4e09-8724-6b7bec22b75f_terseLabel_en-US" xlink:label="lab_us-gaap_SoutheastRegionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Southeast </link:label>

<link:label id="lab_us-gaap_SoutheastRegionMember_label_en-US" xlink:label="lab_us-gaap_SoutheastRegionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Southeast Region [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoutheastRegionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SoutheastRegionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SoutheastRegionMember" xlink:to="lab_us-gaap_SoutheastRegionMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ValuationMarketComparableCompanyMember_1e5158e8-ac56-4544-9b16-1aa244c7ea1e_terseLabel_en-US" xlink:label="lab_gbdc_ValuationMarketComparableCompanyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Market comparable companies </link:label>

<link:label id="lab_gbdc_ValuationMarketComparableCompanyMember_label_en-US" xlink:label="lab_gbdc_ValuationMarketComparableCompanyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Market Comparable Company [Member] </link:label>

<link:label id="lab_gbdc_ValuationMarketComparableCompanyMember_documentation_en-US" xlink:label="lab_gbdc_ValuationMarketComparableCompanyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Valuation, Market Comparable Company </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ValuationMarketComparableCompanyMember" xlink:href="gbdc-20230930.xsd#gbdc_ValuationMarketComparableCompanyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ValuationMarketComparableCompanyMember" xlink:to="lab_gbdc_ValuationMarketComparableCompanyMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_c2d6c799-be70-44ba-bfa1-e65fbd493371_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest payable </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Interest Payable, Net </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:to="lab_us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes_d9ecbeca-9661-4eda-93cc-f40c33158aa7_terseLabel_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized (appreciation) depreciation on investment transactions </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes_label_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Taxes </link:label>

<link:label id="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes_documentation_en-US" xlink:label="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Taxes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:href="gbdc-20230930.xsd#gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:to="lab_gbdc_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxes" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember_label_en-US" xlink:label="lab_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management And Incentive Fees For Advisors Risk [Member] </link:label>

<link:label id="lab_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember_documentation_en-US" xlink:label="lab_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management And Incentive Fees For Advisors Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember" xlink:to="lab_gbdc_ManagementAndIncentiveFeesForAdvisorsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyPortfolioTurnover_214ae805-cb40-412c-b630-3e0e7c23f741_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Portfolio turnover </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyPortfolioTurnover_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Portfolio Turnover </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyPortfolioTurnover" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyPortfolioTurnover"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyPortfolioTurnover" xlink:to="lab_us-gaap_InvestmentCompanyPortfolioTurnover" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_fdfdcfd6-2589-44c4-9273-180e8e24e083_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reconciliation of cash and cash equivalents, foreign currencies and restricted cash and cash equivalents and restricted foreign currencies </link:label>

<link:label id="lab_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_label_en-US" xlink:label="lab_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract" xlink:to="lab_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdditionalCapitalRiskMember_label_en-US" xlink:label="lab_gbdc_AdditionalCapitalRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional Capital Risk [Member] </link:label>

<link:label id="lab_gbdc_AdditionalCapitalRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdditionalCapitalRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional Capital Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdditionalCapitalRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdditionalCapitalRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdditionalCapitalRiskMember" xlink:to="lab_gbdc_AdditionalCapitalRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ProceedsFromDividendsReceived_a85bb1a4-0d38-48b8-805d-1f22b4730dab_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDividendsReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from dividends received </link:label>

<link:label id="lab_us-gaap_ProceedsFromDividendsReceived_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDividendsReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from Dividends Received </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDividendsReceived" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDividendsReceived"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDividendsReceived" xlink:to="lab_us-gaap_ProceedsFromDividendsReceived" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_86a92c8d-81de-47ac-9dd7-c468690435cf_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Class [Domain] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Class [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_61ba9722-0ada-4335-b7b0-d16f594e2079_terseLabel_en-US" xlink:label="lab_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution Type [Axis] </link:label>

<link:label id="lab_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_label_en-US" xlink:label="lab_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distribution Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis" xlink:to="lab_us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ClassOfStockDomain_4a973646-fce5-4248-afcc-ab8dafb3e59f_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class of Stock [Domain] </link:label>

<link:label id="lab_us-gaap_ClassOfStockDomain_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class of Stock [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ClassOfStockDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain" xlink:to="lab_us-gaap_ClassOfStockDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_d4e0e8ec-f8e9-47d0-8c95-1e47d68d64b0_totalLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) on investment transactions </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_06316a8c-fd99-4dc8-b290-bdcd5707b37f_terseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) on investment transactions </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_label_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:to="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare_6a9f8d4b-8f9d-4efb-ad4d-f05912685319_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase in net assets as a result of issuance of DRIP shares (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Share Issuance, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyIssuanceOfSharesPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare" xlink:to="lab_us-gaap_InvestmentCompanyIssuanceOfSharesPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnsecuredNotesDowngradeRiskMember_label_en-US" xlink:label="lab_gbdc_UnsecuredNotesDowngradeRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Downgrade Risk [Member] </link:label>

<link:label id="lab_gbdc_UnsecuredNotesDowngradeRiskMember_documentation_en-US" xlink:label="lab_gbdc_UnsecuredNotesDowngradeRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Downgrade Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnsecuredNotesDowngradeRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_UnsecuredNotesDowngradeRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnsecuredNotesDowngradeRiskMember" xlink:to="lab_gbdc_UnsecuredNotesDowngradeRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyAbstract" xlink:to="lab_us-gaap_InvestmentCompanyAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedAtFairValue_bb1986bf-7feb-4e09-a99b-71c2ba0f761b_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, at fair value </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedAtFairValue_28a0d884-063f-4250-a355-40a26bcbeca6_periodStartLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, at fair value, beginning balance </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedAtFairValue_6df1cd62-e842-4db2-9933-d8e1934d80ba_periodEndLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, at fair value, ending balance </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedAtFairValue_e4a49579-5b23-4ff1-83bf-79f0b67559ac_verboseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedAtFairValue_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Fair Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedAtFairValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedAtFairValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedAtFairValue" xlink:to="lab_us-gaap_InvestmentOwnedAtFairValue" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PharmaceuticalsSectorMember_0cb9f9f4-6e5f-4ced-9ba4-d78772fd59e1_terseLabel_en-US" xlink:label="lab_gbdc_PharmaceuticalsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pharmaceuticals </link:label>

<link:label id="lab_gbdc_PharmaceuticalsSectorMember_label_en-US" xlink:label="lab_gbdc_PharmaceuticalsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pharmaceuticals Sector [Member] </link:label>

<link:label id="lab_gbdc_PharmaceuticalsSectorMember_documentation_en-US" xlink:label="lab_gbdc_PharmaceuticalsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pharmaceuticals Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PharmaceuticalsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_PharmaceuticalsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PharmaceuticalsSectorMember" xlink:to="lab_gbdc_PharmaceuticalsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_fe7875dc-2157-412b-bb0d-2f5256156264_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Organization </link:label>

<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock_terseLabel_en-US" xlink:label="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Shareholder Return Vs Peer Group </link:label>

<link:label id="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock_label_en-US" xlink:label="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Shareholder Return Vs Peer Group [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TotalShareholderRtnVsPeerGroupTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:to="lab_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyNetAssetsRollForward_ad378dbc-b947-40a5-b36c-53050159b72f_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyNetAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Net Assets [Roll Forward] </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyNetAssetsRollForward_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyNetAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Net Assets [Roll Forward] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyNetAssetsRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyNetAssetsRollForward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyNetAssetsRollForward" xlink:to="lab_us-gaap_InvestmentCompanyNetAssetsRollForward" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AggtErrCompAmt_terseLabel_en-US" xlink:label="lab_ecd_AggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aggregate Erroneous Compensation Amount </link:label>

<link:label id="lab_ecd_AggtErrCompAmt_label_en-US" xlink:label="lab_ecd_AggtErrCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aggregate Erroneous Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AggtErrCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AggtErrCompAmt" xlink:to="lab_ecd_AggtErrCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BusinessLinesConflictRiskMember_label_en-US" xlink:label="lab_gbdc_BusinessLinesConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Business Lines Conflict Risk [Member] </link:label>

<link:label id="lab_gbdc_BusinessLinesConflictRiskMember_documentation_en-US" xlink:label="lab_gbdc_BusinessLinesConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Business Lines Conflict Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BusinessLinesConflictRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_BusinessLinesConflictRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BusinessLinesConflictRiskMember" xlink:to="lab_gbdc_BusinessLinesConflictRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock_a87dee8e-ac2f-4d40-910b-3f116ded1a6a_terseLabel_en-US" xlink:label="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Tax Character of Distributions Paid </link:label>

<link:label id="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock_label_en-US" xlink:label="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Tax Character Of Distributions Paid [Table Text Block] </link:label>

<link:label id="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Tax Character Of Distributions Paid </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:to="lab_gbdc_ScheduleOfTaxCharacterOfDistributionsPaidTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AllExecutiveCategoriesMember_terseLabel_en-US" xlink:label="lab_ecd_AllExecutiveCategoriesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Executive Categories </link:label>

<link:label id="lab_ecd_AllExecutiveCategoriesMember_label_en-US" xlink:label="lab_ecd_AllExecutiveCategoriesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Executive Categories [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AllExecutiveCategoriesMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllExecutiveCategoriesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllExecutiveCategoriesMember" xlink:to="lab_ecd_AllExecutiveCategoriesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MidwestRegionMember_3ad2825b-d12b-49a6-b812-a809d9068a63_terseLabel_en-US" xlink:label="lab_us-gaap_MidwestRegionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Midwest </link:label>

<link:label id="lab_us-gaap_MidwestRegionMember_label_en-US" xlink:label="lab_us-gaap_MidwestRegionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Midwest Region [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MidwestRegionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MidwestRegionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MidwestRegionMember" xlink:to="lab_us-gaap_MidwestRegionMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtDisclosureAbstract_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtDisclosureAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract" xlink:to="lab_us-gaap_DebtDisclosureAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeCollateralObligationToReturnSecurities_257dbbfb-bd37-4cd9-9c6b-7085f7fc9460_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Collateral (received) pledged </link:label>

<link:label id="lab_us-gaap_DerivativeCollateralObligationToReturnSecurities_label_en-US" xlink:label="lab_us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeCollateralObligationToReturnSecurities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:to="lab_us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RepurchaseAgreementRiskMember_label_en-US" xlink:label="lab_gbdc_RepurchaseAgreementRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repurchase Agreement Risk [Member] </link:label>

<link:label id="lab_gbdc_RepurchaseAgreementRiskMember_documentation_en-US" xlink:label="lab_gbdc_RepurchaseAgreementRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repurchase Agreement Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RepurchaseAgreementRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_RepurchaseAgreementRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RepurchaseAgreementRiskMember" xlink:to="lab_gbdc_RepurchaseAgreementRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritizationRiskMember_label_en-US" xlink:label="lab_gbdc_DebtSecuritizationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Risk [Member] </link:label>

<link:label id="lab_gbdc_DebtSecuritizationRiskMember_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritizationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritizationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritizationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritizationRiskMember" xlink:to="lab_gbdc_DebtSecuritizationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractTable_f4879d36-d094-440d-8440-d91c440d6550_terseLabel_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract [Table] </link:label>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractTable_label_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OpenForwardForeignCurrencyContractTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OpenForwardForeignCurrencyContractTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OpenForwardForeignCurrencyContractTable" xlink:to="lab_us-gaap_OpenForwardForeignCurrencyContractTable" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ReturnOfCapitalMember_b351c2e3-1180-4b80-b010-cccb4e11676a_terseLabel_en-US" xlink:label="lab_gbdc_ReturnOfCapitalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> From return of capital </link:label>

<link:label id="lab_gbdc_ReturnOfCapitalMember_label_en-US" xlink:label="lab_gbdc_ReturnOfCapitalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Return Of Capital [Member] </link:label>

<link:label id="lab_gbdc_ReturnOfCapitalMember_documentation_en-US" xlink:label="lab_gbdc_ReturnOfCapitalMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Return Of Capital </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ReturnOfCapitalMember" xlink:href="gbdc-20230930.xsd#gbdc_ReturnOfCapitalMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ReturnOfCapitalMember" xlink:to="lab_gbdc_ReturnOfCapitalMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_USMidAtlanticMember_071fed20-cb21-4941-adc3-974240bfa8dd_terseLabel_en-US" xlink:label="lab_gbdc_USMidAtlanticMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Mid-Atlantic </link:label>

<link:label id="lab_gbdc_USMidAtlanticMember_label_en-US" xlink:label="lab_gbdc_USMidAtlanticMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Mid-Atlantic [Member] </link:label>

<link:label id="lab_gbdc_USMidAtlanticMember_documentation_en-US" xlink:label="lab_gbdc_USMidAtlanticMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Mid-Atlantic </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_USMidAtlanticMember" xlink:href="gbdc-20230930.xsd#gbdc_USMidAtlanticMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_USMidAtlanticMember" xlink:to="lab_gbdc_USMidAtlanticMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EarningsPerShareAbstract_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings Per Share [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract" xlink:to="lab_us-gaap_EarningsPerShareAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences_d46fe609-5ea3-4807-818a-616a3683fde2_negatedTerseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other temporary differences </link:label>

<link:label id="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distributable Earnings (Loss), Accumulated Other Temporary Differences </link:label>

<link:label id="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distributable Earnings (Loss), Accumulated Other Temporary Differences </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:to="lab_gbdc_InvestmentCompanyDistributableEarningsLossAccumulatedOtherTemporaryDifferences" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OwnershipInterestRiskMember_label_en-US" xlink:label="lab_gbdc_OwnershipInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ownership Interest Risk [Member] </link:label>

<link:label id="lab_gbdc_OwnershipInterestRiskMember_documentation_en-US" xlink:label="lab_gbdc_OwnershipInterestRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ownership Interest Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OwnershipInterestRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_OwnershipInterestRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OwnershipInterestRiskMember" xlink:to="lab_gbdc_OwnershipInterestRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockValue_df69b022-cbcb-451d-a9ac-f5d297ba4b7b_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common stock, par value $0.001 per share, 350,000,000 shares authorized, 169,594,742 and 170,895,670 shares issued and outstanding as of September 30, 2023 and September 30, 2022, respectively. </link:label>

<link:label id="lab_us-gaap_CommonStockValue_label_en-US" xlink:label="lab_us-gaap_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Value, Issued </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue" xlink:to="lab_us-gaap_CommonStockValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_f75f5569-c9c4-484c-8bfd-3ac6370fb37b_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, redemption price, percentage </link:label>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Redemption Price, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DividendIncomeOperatingPaidInKind_b4fd520e-1280-4ffa-8e0f-ffa4f569b70e_terseLabel_en-US" xlink:label="lab_us-gaap_DividendIncomeOperatingPaidInKind" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend income, operating, paid in kind </link:label>

<link:label id="lab_us-gaap_DividendIncomeOperatingPaidInKind_label_en-US" xlink:label="lab_us-gaap_DividendIncomeOperatingPaidInKind" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividend Income, Operating, Paid in Kind </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendIncomeOperatingPaidInKind" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendIncomeOperatingPaidInKind"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendIncomeOperatingPaidInKind" xlink:to="lab_us-gaap_DividendIncomeOperatingPaidInKind" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassA2018NoteMember_cfd695e0-8bc6-43c6-8f31-083c9db56507_terseLabel_en-US" xlink:label="lab_gbdc_ClassA2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassA2018NoteMember_label_en-US" xlink:label="lab_gbdc_ClassA2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A 2018 Note [Member] </link:label>

<link:label id="lab_gbdc_ClassA2018NoteMember_documentation_en-US" xlink:label="lab_gbdc_ClassA2018NoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class A 2018 Note </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassA2018NoteMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassA2018NoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassA2018NoteMember" xlink:to="lab_gbdc_ClassA2018NoteMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractLineItems_1ca8c2ee-b2ad-4a03-a3d6-5d20a1309fd6_terseLabel_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract [Line Items] </link:label>

<link:label id="lab_us-gaap_OpenForwardForeignCurrencyContractLineItems_label_en-US" xlink:label="lab_us-gaap_OpenForwardForeignCurrencyContractLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Open Forward Foreign Currency Contract [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OpenForwardForeignCurrencyContractLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OpenForwardForeignCurrencyContractLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OpenForwardForeignCurrencyContractLineItems" xlink:to="lab_us-gaap_OpenForwardForeignCurrencyContractLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SeniorNotesMember_49e2a79a-10f6-45a2-8932-641fc3422bf7_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Senior Notes </link:label>

<link:label id="lab_us-gaap_SeniorNotesMember_label_en-US" xlink:label="lab_us-gaap_SeniorNotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Senior Notes [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotesMember" xlink:to="lab_us-gaap_SeniorNotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember_7d8e635d-b067-47a7-889d-0dc66adc1622_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember_label_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up [Member] </link:label>

<link:label id="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:to="lab_gbdc_InvestmentManagementAgreementIncentiveRatePreIncentiveFeeNetInvestmentIncomeBelowCatchUpMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestPayableCurrentAndNoncurrent_57353a0e-3ab7-4731-9557-0a6e2aca8185_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrentAndNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest payable </link:label>

<link:label id="lab_us-gaap_InterestPayableCurrentAndNoncurrent_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrentAndNoncurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Payable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="lab_us-gaap_InterestPayableCurrentAndNoncurrent" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAClassB1GCIC2018NotesMember_8c97a380-273d-4826-9df7-c30458d4eb53_terseLabel_en-US" xlink:label="lab_gbdc_AAClassB1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B-1 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_AAClassB1GCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_AAClassB1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B-1 GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAClassB1GCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAClassB1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B-1 GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAClassB1GCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAClassB1GCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAClassB1GCIC2018NotesMember" xlink:to="lab_gbdc_AAClassB1GCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember_42802fd2-f173-495e-a8cf-c6caa98293b4_terseLabel_en-US" xlink:label="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized gain (loss) on translation of investments in foreign currencies </link:label>

<link:label id="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember_label_en-US" xlink:label="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Foreign Currency Transaction, Before Tax [Member] </link:label>

<link:label id="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember_documentation_en-US" xlink:label="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Foreign Currency Transaction, Before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:href="gbdc-20230930.xsd#gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:to="lab_gbdc_RealizedGainLossForeignCurrencyTransactionBeforeTaxMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AllIndividualsMember_terseLabel_en-US" xlink:label="lab_ecd_AllIndividualsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Individuals </link:label>

<link:label id="lab_ecd_AllIndividualsMember_label_en-US" xlink:label="lab_ecd_AllIndividualsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> All Individuals [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllIndividualsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="lab_ecd_AllIndividualsMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees_cf14500c-af66-477d-bce2-69664be6bc74_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment company, premium prepayment fees </link:label>

<link:label id="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Premium Prepayment Fees </link:label>

<link:label id="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Premium Prepayment Fees </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyPremiumPrepaymentFees"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:to="lab_gbdc_InvestmentCompanyPremiumPrepaymentFees" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityFilerCategory_77b934ed-cd0a-45f1-aa05-608f5b35980b_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Filer Category </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFilerCategory"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory" xlink:to="lab_dei_EntityFilerCategory" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonPeoNeoAvgTotalCompAmt_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoAvgTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO Average Total Compensation Amount </link:label>

<link:label id="lab_ecd_NonPeoNeoAvgTotalCompAmt_label_en-US" xlink:label="lab_ecd_NonPeoNeoAvgTotalCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO Average Total Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonPeoNeoAvgTotalCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonPeoNeoAvgTotalCompAmt" xlink:to="lab_ecd_NonPeoNeoAvgTotalCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementTable_06330971-5e5e-461f-a7de-bcc1c2c9a88a_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement [Table] </link:label>

<link:label id="lab_us-gaap_StatementTable_label_en-US" xlink:label="lab_us-gaap_StatementTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable" xlink:to="lab_us-gaap_StatementTable" xlink:type="arc" order="1"/>

<link:label id="lab_dei_CurrentFiscalYearEndDate_fde208dd-90b0-455f-ba9f-42f1a0461519_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Current Fiscal Year End Date </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CurrentFiscalYearEndDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate" xlink:to="lab_dei_CurrentFiscalYearEndDate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_2b2cdb07-3926-4003-89e0-0008add27119_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock repurchase program, authorized amount </link:label>

<link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchase Program, Authorized Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:to="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeoName_terseLabel_en-US" xlink:label="lab_ecd_PeoName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Name </link:label>

<link:label id="lab_ecd_PeoName_label_en-US" xlink:label="lab_ecd_PeoName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> PEO Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeoName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeoName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeoName" xlink:to="lab_ecd_PeoName" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtPolicyTextBlock_0c46e496-f5a1-47ec-88cc-9d03f6afd0e6_terseLabel_en-US" xlink:label="lab_us-gaap_DebtPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred debt issuance costs </link:label>

<link:label id="lab_us-gaap_DebtPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_DebtPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtPolicyTextBlock" xlink:to="lab_us-gaap_DebtPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PreferredStockSharesAuthorized_b8255b4c-865a-4439-98ea-89cfa61fcee0_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred stock, shares authorized (in shares) </link:label>

<link:label id="lab_us-gaap_PreferredStockSharesAuthorized_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred Stock, Shares Authorized </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockSharesAuthorized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesAuthorized" xlink:to="lab_us-gaap_PreferredStockSharesAuthorized" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BaseRateMember_93104e5a-f469-4f3e-aaa9-88a823fe3ab8_terseLabel_en-US" xlink:label="lab_us-gaap_BaseRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Base Rate </link:label>

<link:label id="lab_us-gaap_BaseRateMember_label_en-US" xlink:label="lab_us-gaap_BaseRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Base Rate [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BaseRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BaseRateMember" xlink:to="lab_us-gaap_BaseRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_PreferredStockSharesOutstanding_3b5801b4-c18a-44ac-9805-43371e7f9d77_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred stock, shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_PreferredStockSharesOutstanding_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Preferred Stock, Shares Outstanding </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockSharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuredOvernightFinancingRateSOFRMember_9bccc50c-647b-4997-90da-e1f648d277f1_terseLabel_en-US" xlink:label="lab_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Secured Overnight Financing Rate (SOFR) </link:label>

<link:label id="lab_gbdc_SecuredOvernightFinancingRateSOFRMember_label_en-US" xlink:label="lab_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Secured Overnight Financing Rate (SOFR) [Member] </link:label>

<link:label id="lab_gbdc_SecuredOvernightFinancingRateSOFRMember_documentation_en-US" xlink:label="lab_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Secured Overnight Financing Rate (SOFR) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuredOvernightFinancingRateSOFRMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:to="lab_gbdc_SecuredOvernightFinancingRateSOFRMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold_961f28a6-12df-4fe6-ab61-c9c410a2d287_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Minimum asset coverage ratio required </link:label>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold_label_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio, Minimum Threshold </link:label>

<link:label id="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio, Minimum Threshold </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:to="lab_gbdc_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatioMinimumThreshold" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DGCLAndCertificateOfIncorporationRiskMember_label_en-US" xlink:label="lab_gbdc_DGCLAndCertificateOfIncorporationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DGCL And Certificate Of Incorporation Risk [Member] </link:label>

<link:label id="lab_gbdc_DGCLAndCertificateOfIncorporationRiskMember_documentation_en-US" xlink:label="lab_gbdc_DGCLAndCertificateOfIncorporationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DGCL And Certificate Of Incorporation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DGCLAndCertificateOfIncorporationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DGCLAndCertificateOfIncorporationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DGCLAndCertificateOfIncorporationRiskMember" xlink:to="lab_gbdc_DGCLAndCertificateOfIncorporationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_QualifyingAssetTypeDomain_29ec5cb9-7549-4fd0-a6df-29a6b7fbe988_terseLabel_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type [Domain] </link:label>

<link:label id="lab_gbdc_QualifyingAssetTypeDomain_label_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type [Domain] </link:label>

<link:label id="lab_gbdc_QualifyingAssetTypeDomain_documentation_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_QualifyingAssetTypeDomain" xlink:href="gbdc-20230930.xsd#gbdc_QualifyingAssetTypeDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_QualifyingAssetTypeDomain" xlink:to="lab_gbdc_QualifyingAssetTypeDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RisingInterestRatesRiskMember_label_en-US" xlink:label="lab_gbdc_RisingInterestRatesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rising Interest Rates Risk [Member] </link:label>

<link:label id="lab_gbdc_RisingInterestRatesRiskMember_documentation_en-US" xlink:label="lab_gbdc_RisingInterestRatesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Rising Interest Rates Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RisingInterestRatesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_RisingInterestRatesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RisingInterestRatesRiskMember" xlink:to="lab_gbdc_RisingInterestRatesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_08a64d88-26ba-4dfe-9de0-58d3ddbf85fc_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Principal </link:label>

<link:label id="lab_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_label_en-US" xlink:label="lab_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, Face Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:to="lab_us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_1971654b-4287-4172-97db-75803f1ecfb1_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest rate </link:label>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember_label_en-US" xlink:label="lab_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuers Issuing Additional Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Securitization Issuers Issuing Additional Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember" xlink:to="lab_gbdc_SecuritizationIssuersIssuingAdditionalNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockholdersEquity_5632e46e-fdce-4981-8eed-2a8b873f8c2b_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Net Assets </link:label>

<link:label id="lab_us-gaap_StockholdersEquity_fbb5743c-8596-4ddf-b669-ff688ee0bc37_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Beginning balance </link:label>

<link:label id="lab_us-gaap_StockholdersEquity_beedc2f1-1480-44bd-b48b-f217a8baab67_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ending balance </link:label>

<link:label id="lab_us-gaap_StockholdersEquity_844706bc-bbd9-43c6-8d1c-19c6a5cbf6ad_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net assets at end of period </link:label>

<link:label id="lab_us-gaap_StockholdersEquity_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity, Attributable to Parent </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="lab_us-gaap_StockholdersEquity" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ClassCGCIC2018NotesMember_d923fd1d-9c19-4682-bd1b-531e6cb824f5_terseLabel_en-US" xlink:label="lab_gbdc_ClassCGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_ClassCGCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_ClassCGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_ClassCGCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_ClassCGCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Class C GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ClassCGCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_ClassCGCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ClassCGCIC2018NotesMember" xlink:to="lab_gbdc_ClassCGCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_CommercialServicesSuppliesSectorMember_8746ec44-a768-43c2-a8da-9058f2a65985_terseLabel_en-US" xlink:label="lab_gbdc_CommercialServicesSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services & Supplies </link:label>

<link:label id="lab_gbdc_CommercialServicesSuppliesSectorMember_label_en-US" xlink:label="lab_gbdc_CommercialServicesSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services & Supplies Sector [Member] </link:label>

<link:label id="lab_gbdc_CommercialServicesSuppliesSectorMember_documentation_en-US" xlink:label="lab_gbdc_CommercialServicesSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Commercial Services & Supplies Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_CommercialServicesSuppliesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_CommercialServicesSuppliesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_CommercialServicesSuppliesSectorMember" xlink:to="lab_gbdc_CommercialServicesSuppliesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_181f0f4d-73c4-41e6-ade7-cbf72b04833a_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques </link:label>

<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RoadRailSectorMember_6c4e2a9b-a6a2-41cc-8037-d13c03a56ffa_terseLabel_en-US" xlink:label="lab_gbdc_RoadRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road & Rail </link:label>

<link:label id="lab_gbdc_RoadRailSectorMember_label_en-US" xlink:label="lab_gbdc_RoadRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road & Rail Sector [Member] </link:label>

<link:label id="lab_gbdc_RoadRailSectorMember_documentation_en-US" xlink:label="lab_gbdc_RoadRailSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Road & Rail Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RoadRailSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_RoadRailSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RoadRailSectorMember" xlink:to="lab_gbdc_RoadRailSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NumberOfInvestmentPortfolioCompany_dbafd737-5abd-4860-8460-2d6cb5d8dcba_terseLabel_en-US" xlink:label="lab_gbdc_NumberOfInvestmentPortfolioCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Number of investment portfolio company </link:label>

<link:label id="lab_gbdc_NumberOfInvestmentPortfolioCompany_label_en-US" xlink:label="lab_gbdc_NumberOfInvestmentPortfolioCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Number Of Investment Portfolio Company </link:label>

<link:label id="lab_gbdc_NumberOfInvestmentPortfolioCompany_documentation_en-US" xlink:label="lab_gbdc_NumberOfInvestmentPortfolioCompany" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Number Of Investment Portfolio Company </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NumberOfInvestmentPortfolioCompany" xlink:href="gbdc-20230930.xsd#gbdc_NumberOfInvestmentPortfolioCompany"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NumberOfInvestmentPortfolioCompany" xlink:to="lab_gbdc_NumberOfInvestmentPortfolioCompany" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_aeb48e91-a167-41e8-a203-70d0dedc484c_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis" xlink:to="lab_us-gaap_ConcentrationRiskByTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_dd2910fe-46b4-48c0-819d-d51db3ac1026_terseLabel_en-US" xlink:label="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized gain (loss) on investments </link:label>

<link:label id="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_label_en-US" xlink:label="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Investment, Derivative, And Foreign Currency Transaction Price Change, Operating, Before Tax [Member] </link:label>

<link:label id="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember_documentation_en-US" xlink:label="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Realized Gain (Loss), Investment, Derivative, And Foreign Currency Transaction Price Change, Operating, Before Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:href="gbdc-20230930.xsd#gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:to="lab_gbdc_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SubsequentEventsAbstract_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subsequent Events [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsAbstract" xlink:to="lab_us-gaap_SubsequentEventsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity3Through5Years_0df6afb7-644d-4fc7-adad-273c479b53d2_terseLabel_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 3 – 5 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity3Through5Years_label_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, 3 Through 5 Years </link:label>

<link:label id="lab_gbdc_LongTermDebtGrossMaturity3Through5Years_documentation_en-US" xlink:label="lab_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Gross, Maturity, 3 Through 5 Years </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:href="gbdc-20230930.xsd#gbdc_LongTermDebtGrossMaturity3Through5Years"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:to="lab_gbdc_LongTermDebtGrossMaturity3Through5Years" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AerospaceAndDefenseSectorMember_af90f04c-d2e0-4dce-9e7d-a079b75d4a0a_terseLabel_en-US" xlink:label="lab_gbdc_AerospaceAndDefenseSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aerospace and Defense </link:label>

<link:label id="lab_gbdc_AerospaceAndDefenseSectorMember_label_en-US" xlink:label="lab_gbdc_AerospaceAndDefenseSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aerospace And Defense Sector [Member] </link:label>

<link:label id="lab_gbdc_AerospaceAndDefenseSectorMember_documentation_en-US" xlink:label="lab_gbdc_AerospaceAndDefenseSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Aerospace And Defense Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AerospaceAndDefenseSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_AerospaceAndDefenseSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AerospaceAndDefenseSectorMember" xlink:to="lab_gbdc_AerospaceAndDefenseSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_e9813a15-bc93-400f-904c-52aa5adcc310_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_b9c624cf-6add-42ad-9eeb-221174b51224_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value measurement </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Measurement, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:to="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ManagementAndServiceFeesBaseRate_5d27b6f2-63f3-4bda-aadb-c713e5faf19c_terseLabel_en-US" xlink:label="lab_us-gaap_ManagementAndServiceFeesBaseRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and service fees, base rate </link:label>

<link:label id="lab_us-gaap_ManagementAndServiceFeesBaseRate_label_en-US" xlink:label="lab_us-gaap_ManagementAndServiceFeesBaseRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Management and Service Fees, Base Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementAndServiceFeesBaseRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ManagementAndServiceFeesBaseRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ManagementAndServiceFeesBaseRate" xlink:to="lab_us-gaap_ManagementAndServiceFeesBaseRate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueInputsLevel2Member_cc2815ff-3718-4546-99ab-01585f5e2e72_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Level 2 </link:label>

<link:label id="lab_us-gaap_FairValueInputsLevel2Member_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Inputs, Level 2 [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel2Member" xlink:to="lab_us-gaap_FairValueInputsLevel2Member" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DataBreachRiskMember_label_en-US" xlink:label="lab_gbdc_DataBreachRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Data Breach Risk [Member] </link:label>

<link:label id="lab_gbdc_DataBreachRiskMember_documentation_en-US" xlink:label="lab_gbdc_DataBreachRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Data Breach Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DataBreachRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_DataBreachRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DataBreachRiskMember" xlink:to="lab_gbdc_DataBreachRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdviserRevolverMember_9afedea4-1357-439a-a911-dbb9fc58dff6_terseLabel_en-US" xlink:label="lab_gbdc_AdviserRevolverMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adviser Revolver </link:label>

<link:label id="lab_gbdc_AdviserRevolverMember_label_en-US" xlink:label="lab_gbdc_AdviserRevolverMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adviser Revolver [Member] </link:label>

<link:label id="lab_gbdc_AdviserRevolverMember_documentation_en-US" xlink:label="lab_gbdc_AdviserRevolverMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adviser Revolver </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdviserRevolverMember" xlink:href="gbdc-20230930.xsd#gbdc_AdviserRevolverMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdviserRevolverMember" xlink:to="lab_gbdc_AdviserRevolverMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdministratorResignOn60DaysNoticeRiskMember_label_en-US" xlink:label="lab_gbdc_AdministratorResignOn60DaysNoticeRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administrator Resign On 60 Days' Notice Risk [Member] </link:label>

<link:label id="lab_gbdc_AdministratorResignOn60DaysNoticeRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdministratorResignOn60DaysNoticeRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Administrator Resign On 60 Days' Notice Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdministratorResignOn60DaysNoticeRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdministratorResignOn60DaysNoticeRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdministratorResignOn60DaysNoticeRiskMember" xlink:to="lab_gbdc_AdministratorResignOn60DaysNoticeRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesMember_afd3a353-a5ea-49b7-8efe-5881e1d6322d_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounts Payable and Accrued Liabilities </link:label>

<link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesMember_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accounts Payable and Accrued Liabilities [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:to="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAClassB2020NotesMember_bc1ed25c-5233-44b8-9596-0c69c446180f_terseLabel_en-US" xlink:label="lab_gbdc_AAClassB2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2020 Notes </link:label>

<link:label id="lab_gbdc_AAClassB2020NotesMember_label_en-US" xlink:label="lab_gbdc_AAClassB2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2020 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAClassB2020NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAClassB2020NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AA Class B 2020 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAClassB2020NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAClassB2020NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAClassB2020NotesMember" xlink:to="lab_gbdc_AAClassB2020NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_470acef5-24b4-40e7-a814-ed451a275273_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Realized and Unrealized Gain (Loss) on Forward Currency Contract </link:label>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Instruments, Gain (Loss) [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:to="lab_us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LeisureProductsSectorMember_2cf47184-5e35-4c5c-b86c-49848e6c730c_terseLabel_en-US" xlink:label="lab_gbdc_LeisureProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Leisure Products </link:label>

<link:label id="lab_gbdc_LeisureProductsSectorMember_label_en-US" xlink:label="lab_gbdc_LeisureProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Leisure Products Sector [Member] </link:label>

<link:label id="lab_gbdc_LeisureProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_LeisureProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Leisure Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LeisureProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_LeisureProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LeisureProductsSectorMember" xlink:to="lab_gbdc_LeisureProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NamedExecutiveOfficersFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Named Executive Officers, Footnote </link:label>

<link:label id="lab_ecd_NamedExecutiveOfficersFnTextBlock_label_en-US" xlink:label="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Named Executive Officers, Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NamedExecutiveOfficersFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:to="lab_ecd_NamedExecutiveOfficersFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock_03f346c9-c5dc-4b96-8dc6-7d619d9d04b2_terseLabel_en-US" xlink:label="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Accumulated Earnings (Deficit) Book Basis, Income Tax </link:label>

<link:label id="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock_label_en-US" xlink:label="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Accumulated Earnings (Deficit) Book Basis, Income Tax [Table Text Block] </link:label>

<link:label id="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Accumulated Earnings (Deficit) Book Basis, Income Tax </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:to="lab_gbdc_ScheduleOfAccumulatedEarningsDeficitBookBasisIncomeTaxTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentFiscalPeriodFocus_a420881c-87e7-4145-98d2-2c696847861a_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Fiscal Period Focus </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentFiscalPeriodFocus"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus" xlink:to="lab_dei_DocumentFiscalPeriodFocus" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_35ab9e08-4847-4d25-b277-0eb514b06795_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net realized gain (loss) on investment transactions (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Gain (Loss) on Investment, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare" xlink:to="lab_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_srt_WeightedAverageMember_1b813b70-4cbe-4644-be79-877dfcd44e09_terseLabel_en-US" xlink:label="lab_srt_WeightedAverageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Weighted Average </link:label>

<link:label id="lab_srt_WeightedAverageMember_label_en-US" xlink:label="lab_srt_WeightedAverageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Weighted Average [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_WeightedAverageMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_WeightedAverageMember" xlink:to="lab_srt_WeightedAverageMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MSCreditFacilityIIMember_df16842e-f5a3-4f06-a106-dcb48a264d76_terseLabel_en-US" xlink:label="lab_gbdc_MSCreditFacilityIIMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> MS Credit Facility II </link:label>

<link:label id="lab_gbdc_MSCreditFacilityIIMember_label_en-US" xlink:label="lab_gbdc_MSCreditFacilityIIMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> MS Credit Facility II [Member] </link:label>

<link:label id="lab_gbdc_MSCreditFacilityIIMember_documentation_en-US" xlink:label="lab_gbdc_MSCreditFacilityIIMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> MS Credit Facility II </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MSCreditFacilityIIMember" xlink:href="gbdc-20230930.xsd#gbdc_MSCreditFacilityIIMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MSCreditFacilityIIMember" xlink:to="lab_gbdc_MSCreditFacilityIIMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract_c8ae7fae-a62c-4a9a-ac7d-c4cefda316ca_terseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) from: </link:label>

<link:label id="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract_label_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:to="lab_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTaxAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized_7fffd6f9-3d65-45c0-9718-6c7e64ab1fad_negatedTerseLabel_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payment-in-kind interest capitalized </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized_c7bde9c3-4e8e-4660-a46a-530cb59ed214_terseLabel_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payment-in-kind interest capitalized </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized_label_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid-In-Kind, Capitalized </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized_documentation_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid-In-Kind, Capitalized </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:href="gbdc-20230930.xsd#gbdc_InterestIncomeOperatingPaidInKindCapitalized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:to="lab_gbdc_InterestIncomeOperatingPaidInKindCapitalized" xlink:type="arc" order="1"/>

<link:label id="lab_dei_CityAreaCode_91c1a7b6-4850-430d-893b-47753ad82606_terseLabel_en-US" xlink:label="lab_dei_CityAreaCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> City Area Code </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CityAreaCode" xlink:to="lab_dei_CityAreaCode" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EarningsPerShareTextBlock_6e57b68e-784c-4315-83a4-631aa1682e41_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings Per Share </link:label>

<link:label id="lab_us-gaap_EarningsPerShareTextBlock_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Earnings Per Share [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock" xlink:to="lab_us-gaap_EarningsPerShareTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage_8b39ab77-c054-4e79-9ae1-32726f1b288f_terseLabel_en-US" xlink:label="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Maximum percentage of gross sales, commission received, percentage </link:label>

<link:label id="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage_label_en-US" xlink:label="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Maximum Percentage Of Gross Sales, Commission Received, Percentage </link:label>

<link:label id="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage_documentation_en-US" xlink:label="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Maximum Percentage Of Gross Sales, Commission Received, Percentage </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:href="gbdc-20230930.xsd#gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:to="lab_gbdc_MaximumPercentageOfGrossSalesCommissionReceivedPercentage" xlink:type="arc" order="1"/>

<link:label id="lab_dei_DocumentFiscalYearFocus_284d9ab5-277d-4caa-be73-aff3fab75395_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Document Fiscal Year Focus </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentFiscalYearFocus"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus" xlink:to="lab_dei_DocumentFiscalYearFocus" xlink:type="arc" order="1"/>

<link:label id="lab_srt_SegmentGeographicalDomain_a57f4a18-2fd7-46dd-bb0b-138293b94490_terseLabel_en-US" xlink:label="lab_srt_SegmentGeographicalDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographical [Domain] </link:label>

<link:label id="lab_srt_SegmentGeographicalDomain_label_en-US" xlink:label="lab_srt_SegmentGeographicalDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Geographical [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SegmentGeographicalDomain" xlink:to="lab_srt_SegmentGeographicalDomain" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PrepayLoansRiskMember_label_en-US" xlink:label="lab_gbdc_PrepayLoansRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prepay Loans Risk [Member] </link:label>

<link:label id="lab_gbdc_PrepayLoansRiskMember_documentation_en-US" xlink:label="lab_gbdc_PrepayLoansRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prepay Loans Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PrepayLoansRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PrepayLoansRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PrepayLoansRiskMember" xlink:to="lab_gbdc_PrepayLoansRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritiesOneStopLoanMember_6d201631-276f-481d-8928-1350465511f7_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritiesOneStopLoanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> One stop </link:label>

<link:label id="lab_gbdc_DebtSecuritiesOneStopLoanMember_label_en-US" xlink:label="lab_gbdc_DebtSecuritiesOneStopLoanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, One Stop Loan [Member] </link:label>

<link:label id="lab_gbdc_DebtSecuritiesOneStopLoanMember_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritiesOneStopLoanMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, One Stop Loan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritiesOneStopLoanMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritiesOneStopLoanMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritiesOneStopLoanMember" xlink:to="lab_gbdc_DebtSecuritiesOneStopLoanMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TaxYear2024Member_98296b09-de20-465b-90c3-d0803d0171e2_terseLabel_en-US" xlink:label="lab_gbdc_TaxYear2024Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Year 2024 </link:label>

<link:label id="lab_gbdc_TaxYear2024Member_label_en-US" xlink:label="lab_gbdc_TaxYear2024Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Year 2024 [Member] </link:label>

<link:label id="lab_gbdc_TaxYear2024Member_documentation_en-US" xlink:label="lab_gbdc_TaxYear2024Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Year 2024 </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TaxYear2024Member" xlink:href="gbdc-20230930.xsd#gbdc_TaxYear2024Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TaxYear2024Member" xlink:to="lab_gbdc_TaxYear2024Member" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember_label_en-US" xlink:label="lab_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reductions, Waivers Or Absorptions Of Fees And Cost Risk [Member] </link:label>

<link:label id="lab_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember_documentation_en-US" xlink:label="lab_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Reductions, Waivers Or Absorptions Of Fees And Cost Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember" xlink:to="lab_gbdc_ReductionsWaiversOrAbsorptionsOfFeesAndCostRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardExrcPrice_terseLabel_en-US" xlink:label="lab_ecd_AwardExrcPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Exercise Price </link:label>

<link:label id="lab_ecd_AwardExrcPrice_label_en-US" xlink:label="lab_ecd_AwardExrcPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Exercise Price </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardExrcPrice" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardExrcPrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardExrcPrice" xlink:to="lab_ecd_AwardExrcPrice" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDividendDistributionAbstract_f3386510-d236-45dc-89e7-71b6212819ea_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDividendDistributionAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributions to stockholders: </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDividendDistributionAbstract_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDividendDistributionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Dividend Distribution [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDividendDistributionAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDividendDistributionAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDividendDistributionAbstract" xlink:to="lab_us-gaap_InvestmentCompanyDividendDistributionAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_QualifyAsARICConflictRiskMember_label_en-US" xlink:label="lab_gbdc_QualifyAsARICConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualify As A RIC Conflict Risk [Member] </link:label>

<link:label id="lab_gbdc_QualifyAsARICConflictRiskMember_documentation_en-US" xlink:label="lab_gbdc_QualifyAsARICConflictRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualify As A RIC Conflict Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_QualifyAsARICConflictRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_QualifyAsARICConflictRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_QualifyAsARICConflictRiskMember" xlink:to="lab_gbdc_QualifyAsARICConflictRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems_a752d09f-4034-4d85-88bd-a6a61cff0cf9_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] </link:label>

<link:label id="lab_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems" xlink:to="lab_us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember_label_en-US" xlink:label="lab_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Seeking The Most Advantageous Terms For An Investment Risk [Member] </link:label>

<link:label id="lab_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember_documentation_en-US" xlink:label="lab_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Seeking The Most Advantageous Terms For An Investment Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember" xlink:to="lab_gbdc_SeekingTheMostAdvantageousTermsForAnInvestmentRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable_a2aa3d7b-d2b2-488d-88b0-ea0629daf57f_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] </link:label>

<link:label id="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable" xlink:to="lab_us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LiabilitiesFairValueDisclosure_3246ac49-5c7c-4e13-8e12-eb2b4da3a71d_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total liabilities, at fair value: </link:label>

<link:label id="lab_us-gaap_LiabilitiesFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Liabilities, Fair Value Disclosure </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure" xlink:to="lab_us-gaap_LiabilitiesFairValueDisclosure" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember_label_en-US" xlink:label="lab_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Market Value Decrease Risk [Member] </link:label>

<link:label id="lab_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember_documentation_en-US" xlink:label="lab_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unsecured Notes Market Value Decrease Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_UnsecuredNotesMarketValueDecreaseRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember" xlink:to="lab_gbdc_UnsecuredNotesMarketValueDecreaseRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_155f481b-a927-4a36-95d1-c4f2fc8722ed_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ConflictOfInterestOnValuationProcessRiskMember_label_en-US" xlink:label="lab_gbdc_ConflictOfInterestOnValuationProcessRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest On Valuation Process Risk [Member] </link:label>

<link:label id="lab_gbdc_ConflictOfInterestOnValuationProcessRiskMember_documentation_en-US" xlink:label="lab_gbdc_ConflictOfInterestOnValuationProcessRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Conflict Of Interest On Valuation Process Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ConflictOfInterestOnValuationProcessRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ConflictOfInterestOnValuationProcessRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ConflictOfInterestOnValuationProcessRiskMember" xlink:to="lab_gbdc_ConflictOfInterestOnValuationProcessRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember_376a261e-a261-44af-b54a-d96b08ade55b_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Subordinated debt and second lien loans </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember_label_en-US" xlink:label="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Subordinated Debt and Second Lien Loan [Member] </link:label>

<link:label id="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securities, Subordinated Debt and Second Lien Loan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:to="lab_gbdc_DebtSecuritiesSubordinatedDebtAndSecondLienLoanMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockholderActivismRiskMember_label_en-US" xlink:label="lab_gbdc_StockholderActivismRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stockholder Activism Risk [Member] </link:label>

<link:label id="lab_gbdc_StockholderActivismRiskMember_documentation_en-US" xlink:label="lab_gbdc_StockholderActivismRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stockholder Activism Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockholderActivismRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_StockholderActivismRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockholderActivismRiskMember" xlink:to="lab_gbdc_StockholderActivismRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue_a6aa796b-af75-4381-aefe-ff8e5d048352_totalLabel_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total investment owned, at fair value and money market funds, at carrying value </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue_label_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, At Fair Value And Money Market Funds, At Carrying Value </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue_documentation_en-US" xlink:label="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned, At Fair Value And Money Market Funds, At Carrying Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:to="lab_gbdc_InvestmentOwnedAtFairValueAndMoneyMarketFundsAtCarryingValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_fce912ea-4e4f-494a-83d7-ac2d72fb9fa4_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion of discounts and amortization of premiums on investments </link:label>

<link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_label_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion (Amortization) of Discounts and Premiums, Investments </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:to="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_4e7e32a1-b9e1-4ee6-a62f-d1c8a5df15d1_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Liabilities and Total Net Assets </link:label>

<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Liabilities and Equity </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeerGroupTotalShareholderRtnAmt_terseLabel_en-US" xlink:label="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Peer Group Total Shareholder Return Amount </link:label>

<link:label id="lab_ecd_PeerGroupTotalShareholderRtnAmt_label_en-US" xlink:label="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Peer Group Total Shareholder Return Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeerGroupTotalShareholderRtnAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:to="lab_ecd_PeerGroupTotalShareholderRtnAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentTable_d3fe4e69-d93e-44f7-8155-10fe6171b7a1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Long-Term Debt Instruments [Table] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentTable_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Long-Term Debt Instruments [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable" xlink:to="lab_us-gaap_DebtInstrumentTable" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Valuation Assumption Difference, Footnote </link:label>

<link:label id="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock_label_en-US" xlink:label="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Valuation Assumption Difference, Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_EquityValuationAssumptionDifferenceFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:to="lab_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember_label_en-US" xlink:label="lab_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment In Leveraged Portfolio Company Risk [Member] </link:label>

<link:label id="lab_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment In Leveraged Portfolio Company Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember" xlink:to="lab_gbdc_InvestmentInLeveragedPortfolioCompanyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_NewOrModifiedLawsOrRegulationRiskMember_label_en-US" xlink:label="lab_gbdc_NewOrModifiedLawsOrRegulationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> New Or Modified Laws Or Regulation Risk [Member] </link:label>

<link:label id="lab_gbdc_NewOrModifiedLawsOrRegulationRiskMember_documentation_en-US" xlink:label="lab_gbdc_NewOrModifiedLawsOrRegulationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> New Or Modified Laws Or Regulation Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_NewOrModifiedLawsOrRegulationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_NewOrModifiedLawsOrRegulationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_NewOrModifiedLawsOrRegulationRiskMember" xlink:to="lab_gbdc_NewOrModifiedLawsOrRegulationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember_label_en-US" xlink:label="lab_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Change Of Control Repurchase Event On Unsecured Notes Risk [Member] </link:label>

<link:label id="lab_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember_documentation_en-US" xlink:label="lab_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Change Of Control Repurchase Event On Unsecured Notes Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember" xlink:to="lab_gbdc_ChangeOfControlRepurchaseEventOnUnsecuredNotesRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased_aa3e2ee1-5355-43a4-9c24-ed6e654b5192_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payable for investments purchased </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Payable for Investment Purchased </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased" xlink:to="lab_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BankBillSwapRateMember_e5841832-5c2d-42cb-b3db-643d70dea66b_terseLabel_en-US" xlink:label="lab_gbdc_BankBillSwapRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Bank Bill Swap Rate </link:label>

<link:label id="lab_gbdc_BankBillSwapRateMember_label_en-US" xlink:label="lab_gbdc_BankBillSwapRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Bank Bill Swap Rate [Member] </link:label>

<link:label id="lab_gbdc_BankBillSwapRateMember_documentation_en-US" xlink:label="lab_gbdc_BankBillSwapRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Bank Bill Swap Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BankBillSwapRateMember" xlink:href="gbdc-20230930.xsd#gbdc_BankBillSwapRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BankBillSwapRateMember" xlink:to="lab_gbdc_BankBillSwapRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrDuration_terseLabel_en-US" xlink:label="lab_ecd_TrdArrDuration" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Arrangement Duration </link:label>

<link:label id="lab_ecd_TrdArrDuration_label_en-US" xlink:label="lab_ecd_TrdArrDuration" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement Duration </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrDuration" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrDuration"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrDuration" xlink:to="lab_ecd_TrdArrDuration" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIncomeInvestmentExpense_260dcf5b-8638-4abc-a17d-f2f098434771_totalLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total expenses </link:label>

<link:label id="lab_us-gaap_InvestmentIncomeInvestmentExpense_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Income, Investment Expense </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeInvestmentExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense" xlink:to="lab_us-gaap_InvestmentIncomeInvestmentExpense" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityAddressCityOrTown_5e07cf2b-0a2f-47f0-88c1-880e8ddf24a3_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Address, City or Town </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCityOrTown" xlink:to="lab_dei_EntityAddressCityOrTown" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgMnpiCnsdrdFlag_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing MNPI Considered </link:label>

<link:label id="lab_ecd_AwardTmgMnpiCnsdrdFlag_label_en-US" xlink:label="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing MNPI Considered [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgMnpiCnsdrdFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:to="lab_ecd_AwardTmgMnpiCnsdrdFlag" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyMember_42d6204f-2a6d-44e6-9841-ac062862fe18_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party </link:label>

<link:label id="lab_us-gaap_RelatedPartyMember_label_en-US" xlink:label="lab_us-gaap_RelatedPartyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyMember" xlink:to="lab_us-gaap_RelatedPartyMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets_89f50266-707d-4826-8202-b8a1d1176fe0_totalLabel_en-US" xlink:label="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total investment owned and money market funds, percent of net assets </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets_label_en-US" xlink:label="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned And Money Market Funds, Percent of Net Assets </link:label>

<link:label id="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets_documentation_en-US" xlink:label="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Owned And Money Market Funds, Percent of Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:to="lab_gbdc_InvestmentOwnedAndMoneyMarketFundsPercentOfNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LenderLiabilityClaimsRiskMember_label_en-US" xlink:label="lab_gbdc_LenderLiabilityClaimsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lender Liability Claims Risk [Member] </link:label>

<link:label id="lab_gbdc_LenderLiabilityClaimsRiskMember_documentation_en-US" xlink:label="lab_gbdc_LenderLiabilityClaimsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lender Liability Claims Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LenderLiabilityClaimsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LenderLiabilityClaimsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LenderLiabilityClaimsRiskMember" xlink:to="lab_gbdc_LenderLiabilityClaimsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember_d24a15c9-694b-44c0-a9a4-699148e41f1c_terseLabel_en-US" xlink:label="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants and Leisure </link:label>

<link:label id="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember_label_en-US" xlink:label="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants And Leisure Sector [Member] </link:label>

<link:label id="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember_documentation_en-US" xlink:label="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants And Leisure Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HotelsRestaurantsAndLeisureSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:to="lab_gbdc_HotelsRestaurantsAndLeisureSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_f1d71c9f-1346-41be-beba-fd4a432e07f0_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net increase (decrease) in net assets as a result of issuance of shares (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Net Asset Value Per Share, Period Increase (Decrease) </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease" xlink:to="lab_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NortheastRegionMember_bba0d5b5-ef9a-4dec-a8f5-baa144bcf17d_terseLabel_en-US" xlink:label="lab_us-gaap_NortheastRegionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Northeast </link:label>

<link:label id="lab_us-gaap_NortheastRegionMember_label_en-US" xlink:label="lab_us-gaap_NortheastRegionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Northeast Region [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NortheastRegionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NortheastRegionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NortheastRegionMember" xlink:to="lab_us-gaap_NortheastRegionMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization_9f1a290c-84df-4f81-a24d-b79ad2fe3f98_terseLabel_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest income </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization_label_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid In Cash, Net Of Amortization </link:label>

<link:label id="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization_documentation_en-US" xlink:label="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Income, Operating, Paid In Cash, Net Of Amortization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:href="gbdc-20230930.xsd#gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:to="lab_gbdc_InterestIncomeOperatingPaidInCashNetOfAmortization" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_9078b0a1-c7c2-467a-8b20-3e644cd84558_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value of financial instruments </link:label>

<link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value of Financial Instruments, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_572f0312-023b-47bd-a02f-303cfdf3f7d5_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Approximate Dollar Value of Shares that May Yet be Purchased Under the Plan </link:label>

<link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchase Program, Remaining Authorized Repurchase Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:to="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrTerminationDate_terseLabel_en-US" xlink:label="lab_ecd_TrdArrTerminationDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Termination Date </link:label>

<link:label id="lab_ecd_TrdArrTerminationDate_label_en-US" xlink:label="lab_ecd_TrdArrTerminationDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement Termination Date </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrTerminationDate" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrTerminationDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrTerminationDate" xlink:to="lab_ecd_TrdArrTerminationDate" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_CommonStockSharesAuthorized_3379bae6-a2d9-41e9-bd7c-03ca46fc5893_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common stock, shares authorized (in shares) </link:label>

<link:label id="lab_us-gaap_CommonStockSharesAuthorized_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Common Stock, Shares Authorized </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesAuthorized"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized" xlink:to="lab_us-gaap_CommonStockSharesAuthorized" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfInvestmentsAbstract_60b286f9-8463-4214-ba4f-05f30461b589_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Investments [Abstract] </link:label>

<link:label id="lab_us-gaap_ScheduleOfInvestmentsAbstract_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Investments [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfInvestmentsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInvestmentsAbstract" xlink:to="lab_us-gaap_ScheduleOfInvestmentsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MoneyMarketFundsPercentOfNetAssets_c08b5e57-daa4-44ce-8cc7-3d2047863ce9_terseLabel_en-US" xlink:label="lab_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money market funds, percent of net assets </link:label>

<link:label id="lab_gbdc_MoneyMarketFundsPercentOfNetAssets_label_en-US" xlink:label="lab_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money Market Funds, Percent Of Net Assets </link:label>

<link:label id="lab_gbdc_MoneyMarketFundsPercentOfNetAssets_documentation_en-US" xlink:label="lab_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money Market Funds, Percent Of Net Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:href="gbdc-20230930.xsd#gbdc_MoneyMarketFundsPercentOfNetAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:to="lab_gbdc_MoneyMarketFundsPercentOfNetAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AbilityToManageBusinessAndToGrowRiskMember_label_en-US" xlink:label="lab_gbdc_AbilityToManageBusinessAndToGrowRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ability To Manage Business And To Grow Risk [Member] </link:label>

<link:label id="lab_gbdc_AbilityToManageBusinessAndToGrowRiskMember_documentation_en-US" xlink:label="lab_gbdc_AbilityToManageBusinessAndToGrowRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Ability To Manage Business And To Grow Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AbilityToManageBusinessAndToGrowRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AbilityToManageBusinessAndToGrowRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AbilityToManageBusinessAndToGrowRiskMember" xlink:to="lab_gbdc_AbilityToManageBusinessAndToGrowRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember_e20dc39c-b6fd-4934-811f-f911707c3278_terseLabel_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments & Components </link:label>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember_label_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments & Components Sector [Member] </link:label>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember_documentation_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments & Components Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:to="lab_gbdc_ElectronicEquipmentInstrumentsComponentsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions_c2ef36fc-ee98-4758-a470-6b192f5a0c04_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross reductions </link:label>

<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments in and Advances to Affiliates, at Fair Value, Gross Reductions </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions" xlink:to="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossReductions" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transactions [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyTransactionsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsAbstract" xlink:to="lab_us-gaap_RelatedPartyTransactionsAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MeasurementInputTypeAxis_89c59e6c-2344-410e-aa66-3838020314b4_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input Type [Axis] </link:label>

<link:label id="lab_us-gaap_MeasurementInputTypeAxis_label_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Measurement Input Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputTypeAxis" xlink:to="lab_us-gaap_MeasurementInputTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember_label_en-US" xlink:label="lab_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Affect On Return Of investment Risk [Member] </link:label>

<link:label id="lab_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Affect On Return Of investment Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdverseAffectOnReturnOfInvestmentRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember" xlink:to="lab_gbdc_AdverseAffectOnReturnOfInvestmentRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_c5cde722-c1f4-443c-8a40-ff0b989595bb_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedules of Portfolio Composition at Amortization Cost and Fair Value </link:label>

<link:label id="lab_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Holdings, Schedule of Investments [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock" xlink:to="lab_us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ContainersAndPackagingSectorMember_252806a3-2d7b-41c3-ae6d-b1695ed7970c_terseLabel_en-US" xlink:label="lab_gbdc_ContainersAndPackagingSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Containers and Packaging </link:label>

<link:label id="lab_gbdc_ContainersAndPackagingSectorMember_label_en-US" xlink:label="lab_gbdc_ContainersAndPackagingSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Containers And Packaging Sector [Member] </link:label>

<link:label id="lab_gbdc_ContainersAndPackagingSectorMember_documentation_en-US" xlink:label="lab_gbdc_ContainersAndPackagingSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Containers And Packaging Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ContainersAndPackagingSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_ContainersAndPackagingSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ContainersAndPackagingSectorMember" xlink:to="lab_gbdc_ContainersAndPackagingSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgDiscLineItems_label_en-US" xlink:label="lab_ecd_AwardTmgDiscLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing Disclosures [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgDiscLineItems" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgDiscLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="lab_ecd_AwardTmgDiscLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdvisorsActInARiskierMannerRiskMember_label_en-US" xlink:label="lab_gbdc_AdvisorsActInARiskierMannerRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Advisors Act In A Riskier Manner Risk [Member] </link:label>

<link:label id="lab_gbdc_AdvisorsActInARiskierMannerRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdvisorsActInARiskierMannerRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Advisors Act In A Riskier Manner Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdvisorsActInARiskierMannerRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdvisorsActInARiskierMannerRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdvisorsActInARiskierMannerRiskMember" xlink:to="lab_gbdc_AdvisorsActInARiskierMannerRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember_adc19561-e8ad-412a-ad9d-8af5885a2bd1_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Income Incentive Fee </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Income Incentive Fee [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Income Incentive Fee </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:to="lab_gbdc_InvestmentAdvisoryAgreementIncomeIncentiveFeeMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentTextBlock_6c308b4b-d014-4de2-9e10-41c145ad23b6_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments </link:label>

<link:label id="lab_us-gaap_InvestmentTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentTextBlock" xlink:to="lab_us-gaap_InvestmentTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DividendsPayableCurrentAndNoncurrent_34e99ddf-afb9-4bbc-bb09-3883dcaab652_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Distributions declared for the period </link:label>

<link:label id="lab_us-gaap_DividendsPayableCurrentAndNoncurrent_label_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends Payable </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:to="lab_us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ShorttermDebtAverageOutstandingAmount_38b0bae6-a7f8-4467-9189-3005ae5ebf4f_terseLabel_en-US" xlink:label="lab_us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Short-term debt, average outstanding amount </link:label>

<link:label id="lab_us-gaap_ShorttermDebtAverageOutstandingAmount_label_en-US" xlink:label="lab_us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Short-Term Debt, Average Outstanding Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShorttermDebtAverageOutstandingAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:to="lab_us-gaap_ShorttermDebtAverageOutstandingAmount" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AdditionalPaidInCapital_22b5244f-f172-4f85-a3f8-9df961ef1138_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Paid in capital in excess of par </link:label>

<link:label id="lab_us-gaap_AdditionalPaidInCapital_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapital" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Additional Paid in Capital </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapital"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapital" xlink:to="lab_us-gaap_AdditionalPaidInCapital" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2018GCICDebtSecuritizationMember_9c958fbc-1951-4b11-9352-ae720860c1a2_terseLabel_en-US" xlink:label="lab_gbdc_A2018GCICDebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 GCIC Debt Securitization </link:label>

<link:label id="lab_gbdc_A2018GCICDebtSecuritizationMember_label_en-US" xlink:label="lab_gbdc_A2018GCICDebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 GCIC Debt Securitization [Member] </link:label>

<link:label id="lab_gbdc_A2018GCICDebtSecuritizationMember_documentation_en-US" xlink:label="lab_gbdc_A2018GCICDebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2018 GCIC Debt Securitization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2018GCICDebtSecuritizationMember" xlink:href="gbdc-20230930.xsd#gbdc_A2018GCICDebtSecuritizationMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2018GCICDebtSecuritizationMember" xlink:to="lab_gbdc_A2018GCICDebtSecuritizationMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DBCreditFacilityMember_97316a34-7ae3-4ee7-afaa-689a93a3953b_terseLabel_en-US" xlink:label="lab_gbdc_DBCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DB Credit Facility </link:label>

<link:label id="lab_gbdc_DBCreditFacilityMember_label_en-US" xlink:label="lab_gbdc_DBCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DB Credit Facility [Member] </link:label>

<link:label id="lab_gbdc_DBCreditFacilityMember_documentation_en-US" xlink:label="lab_gbdc_DBCreditFacilityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> DB Credit Facility </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DBCreditFacilityMember" xlink:href="gbdc-20230930.xsd#gbdc_DBCreditFacilityMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DBCreditFacilityMember" xlink:to="lab_gbdc_DBCreditFacilityMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BiotechnologySectorMember_f394253d-e1df-471e-a52d-377ccdb2a156_terseLabel_en-US" xlink:label="lab_gbdc_BiotechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Biotechnology </link:label>

<link:label id="lab_gbdc_BiotechnologySectorMember_label_en-US" xlink:label="lab_gbdc_BiotechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Biotechnology Sector [Member] </link:label>

<link:label id="lab_gbdc_BiotechnologySectorMember_documentation_en-US" xlink:label="lab_gbdc_BiotechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Biotechnology Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BiotechnologySectorMember" xlink:href="gbdc-20230930.xsd#gbdc_BiotechnologySectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BiotechnologySectorMember" xlink:to="lab_gbdc_BiotechnologySectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentDiscretionRiskMember_label_en-US" xlink:label="lab_gbdc_InvestmentDiscretionRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Discretion Risk [Member] </link:label>

<link:label id="lab_gbdc_InvestmentDiscretionRiskMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentDiscretionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Discretion Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentDiscretionRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentDiscretionRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentDiscretionRiskMember" xlink:to="lab_gbdc_InvestmentDiscretionRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_60bd1e26-9f77-4abd-8020-91b483e4662f_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income taxes </link:label>

<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Income Tax, Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxPolicyTextBlock" xlink:to="lab_us-gaap_IncomeTaxPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_InsiderTradingArrLineItems_label_en-US" xlink:label="lab_ecd_InsiderTradingArrLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Insider Trading Arrangements [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingArrLineItems" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_InsiderTradingArrLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="lab_ecd_InsiderTradingArrLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c88a0eda-b6a9-4457-a745-31648a7293b4_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party [Axis] </link:label>

<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party, Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember_665a74a1-ed16-4df6-b0c9-57df2305f2fe_terseLabel_en-US" xlink:label="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage and Peripherals </link:label>

<link:label id="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember_label_en-US" xlink:label="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage And Peripherals Sector [Member] </link:label>

<link:label id="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember_documentation_en-US" xlink:label="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Technology Hardware, Storage And Peripherals Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:to="lab_gbdc_TechnologyHardwareStorageAndPeripheralsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate_20919a5a-723e-45a0-bbc5-6ff3ba159863_terseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Federal home loan bank, advances, maturity period, variable rate </link:label>

<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate_label_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Federal Home Loan Bank, Advances, Maturity Period, Variable Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate" xlink:to="lab_us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodVariableRate" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAClassA1LLoansMember_e5b21661-65f1-4df9-a92b-afeb3b269180_terseLabel_en-US" xlink:label="lab_gbdc_AAAClassA1LLoansMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1-L Loans </link:label>

<link:label id="lab_gbdc_AAAClassA1LLoansMember_label_en-US" xlink:label="lab_gbdc_AAAClassA1LLoansMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1-L Loans [Member] </link:label>

<link:label id="lab_gbdc_AAAClassA1LLoansMember_documentation_en-US" xlink:label="lab_gbdc_AAAClassA1LLoansMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA Class A-1-L Loans </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAClassA1LLoansMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAClassA1LLoansMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAClassA1LLoansMember" xlink:to="lab_gbdc_AAAClassA1LLoansMember" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityRegistrantName_5c0f2963-b35e-4100-8374-c26fc475d5b0_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Registrant Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName" xlink:to="lab_dei_EntityRegistrantName" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_MtrlTermsOfTrdArrTextBlock_terseLabel_en-US" xlink:label="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Material Terms of Trading Arrangement </link:label>

<link:label id="lab_ecd_MtrlTermsOfTrdArrTextBlock_label_en-US" xlink:label="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Material Terms of Trading Arrangement [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_MtrlTermsOfTrdArrTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:to="lab_ecd_MtrlTermsOfTrdArrTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardTmgMethodTextBlock_terseLabel_en-US" xlink:label="lab_ecd_AwardTmgMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing Method </link:label>

<link:label id="lab_ecd_AwardTmgMethodTextBlock_label_en-US" xlink:label="lab_ecd_AwardTmgMethodTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Award Timing Method [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMethodTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardTmgMethodTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardTmgMethodTextBlock" xlink:to="lab_ecd_AwardTmgMethodTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SBICVMember_1c2f3e50-8ffc-4e30-940b-4fc70f87232a_terseLabel_en-US" xlink:label="lab_gbdc_SBICVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC V </link:label>

<link:label id="lab_gbdc_SBICVMember_label_en-US" xlink:label="lab_gbdc_SBICVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC V [Member] </link:label>

<link:label id="lab_gbdc_SBICVMember_documentation_en-US" xlink:label="lab_gbdc_SBICVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC V </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SBICVMember" xlink:href="gbdc-20230930.xsd#gbdc_SBICVMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SBICVMember" xlink:to="lab_gbdc_SBICVMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_d53fcecd-c1b5-4028-91e0-db8920e0e783_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other assets </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2026NotesMember_5d63aaf5-a882-450c-9668-3b4c3e8f06bb_terseLabel_en-US" xlink:label="lab_gbdc_A2026NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2026 Notes </link:label>

<link:label id="lab_gbdc_A2026NotesMember_label_en-US" xlink:label="lab_gbdc_A2026NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2026 Notes [Member] </link:label>

<link:label id="lab_gbdc_A2026NotesMember_documentation_en-US" xlink:label="lab_gbdc_A2026NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2026 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2026NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_A2026NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2026NotesMember" xlink:to="lab_gbdc_A2026NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AdjToCompAmt_terseLabel_en-US" xlink:label="lab_ecd_AdjToCompAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Compensation, Amount </link:label>

<link:label id="lab_ecd_AdjToCompAmt_label_en-US" xlink:label="lab_ecd_AdjToCompAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Compensation Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AdjToCompAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AdjToCompAmt" xlink:to="lab_ecd_AdjToCompAmt" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentIssuerAffiliationAxis_c73a9457-b481-475f-abcc-ead9209bbedf_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIssuerAffiliationAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Issuer Affiliation [Axis] </link:label>

<link:label id="lab_us-gaap_InvestmentIssuerAffiliationAxis_label_en-US" xlink:label="lab_us-gaap_InvestmentIssuerAffiliationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment, Issuer Affiliation [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIssuerAffiliationAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIssuerAffiliationAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentIssuerAffiliationAxis" xlink:to="lab_us-gaap_InvestmentIssuerAffiliationAxis" xlink:type="arc" order="1"/>

<link:label id="lab_dei_AuditorName_cfdf2a7d-7439-49d1-8104-9eaad4150c25_terseLabel_en-US" xlink:label="lab_dei_AuditorName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Auditor Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorName" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AuditorName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorName" xlink:to="lab_dei_AuditorName" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionPolicyTextBlock_7a151479-2e01-47c6-8825-60d73e67fc8c_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Dividends and distributions </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyDistributionPolicyTextBlock_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyDistributionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Distribution [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDistributionPolicyTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyDistributionPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyDistributionPolicyTextBlock" xlink:to="lab_us-gaap_InvestmentCompanyDistributionPolicyTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock_terseLabel_en-US" xlink:label="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Net Income </link:label>

<link:label id="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock_label_en-US" xlink:label="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Compensation Actually Paid vs. Net Income [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CompActuallyPaidVsNetIncomeTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:to="lab_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan_dbcd1f3e-669f-4ebf-9e73-94e5e69696c5_negatedTerseLabel_en-US" xlink:label="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Purchases of common stock for dividend reinvestment plan </link:label>

<link:label id="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan_label_en-US" xlink:label="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payments For Repurchase Of Common Stock For Dividend Reinvestment Plan </link:label>

<link:label id="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan_documentation_en-US" xlink:label="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Payments For Repurchase Of Common Stock For Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:href="gbdc-20230930.xsd#gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:to="lab_gbdc_PaymentsForRepurchaseOfCommonStockForDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PeerGroupIssuersFnTextBlock_terseLabel_en-US" xlink:label="lab_ecd_PeerGroupIssuersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Peer Group Issuers, Footnote </link:label>

<link:label id="lab_ecd_PeerGroupIssuersFnTextBlock_label_en-US" xlink:label="lab_ecd_PeerGroupIssuersFnTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Peer Group Issuers, Footnote [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PeerGroupIssuersFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PeerGroupIssuersFnTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PeerGroupIssuersFnTextBlock" xlink:to="lab_ecd_PeerGroupIssuersFnTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_c8e2f64b-92d9-4f39-ac49-a6b303304fd1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis </link:label>

<link:label id="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:to="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_766aec4a-132b-4056-b531-2b070119ed75_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repayments of debt </link:label>

<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Repayments of Long-Term Debt </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfLongTermDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebt" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare_5814aff9-3529-4ed1-8fdb-5a1a95d7e64b_terseLabel_en-US" xlink:label="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average Price Paid Per Share (in dollars per share) </link:label>

<link:label id="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare_label_en-US" xlink:label="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchased During Period, Average Price Paid Per Share </link:label>

<link:label id="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare_documentation_en-US" xlink:label="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Stock Repurchased During Period, Average Price Paid Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:href="gbdc-20230930.xsd#gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:to="lab_gbdc_StockRepurchasedDuringPeriodAveragePricePaidPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_dei_EntityCentralIndexKey_3f3f6864-09f0-4712-841a-bae6f4ce8467_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Entity Central Index Key </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey" xlink:to="lab_dei_EntityCentralIndexKey" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts_f96fa495-69e5-4f77-88ef-835ead062db9_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion of discounts on notes issued </link:label>

<link:label id="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amortization of Debt Issuance Costs and Discounts </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:to="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_2cb24b22-3d40-4f92-afcc-5f543ad87a66_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair value, measurement with unobservable inputs reconciliation, recurring basis, asset, gain (loss) included in earnings </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:to="lab_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingMember_f08011ce-9609-4c2f-b36e-de9625908f47_terseLabel_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Accretion of discounts and amortization of premiums </link:label>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingMember_label_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating [Member] </link:label>

<link:label id="lab_gbdc_GrossInvestmentIncomeOperatingMember_documentation_en-US" xlink:label="lab_gbdc_GrossInvestmentIncomeOperatingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_GrossInvestmentIncomeOperatingMember" xlink:href="gbdc-20230930.xsd#gbdc_GrossInvestmentIncomeOperatingMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_GrossInvestmentIncomeOperatingMember" xlink:to="lab_gbdc_GrossInvestmentIncomeOperatingMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonRule10b51ArrTrmntdFlag_terseLabel_en-US" xlink:label="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Rule 10b5-1 Arrangement Terminated </link:label>

<link:label id="lab_ecd_NonRule10b51ArrTrmntdFlag_label_en-US" xlink:label="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-Rule 10b5-1 Arrangement Terminated [Flag] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonRule10b51ArrTrmntdFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:to="lab_ecd_NonRule10b51ArrTrmntdFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_BBBClassD2018NotesMember_4fa88200-6cf4-4d6d-b606-3c4695b48c59_terseLabel_en-US" xlink:label="lab_gbdc_BBBClassD2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> BBB- Class D 2018 Notes </link:label>

<link:label id="lab_gbdc_BBBClassD2018NotesMember_label_en-US" xlink:label="lab_gbdc_BBBClassD2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> BBB- Class D 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_BBBClassD2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_BBBClassD2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> BBB- Class D 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_BBBClassD2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_BBBClassD2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_BBBClassD2018NotesMember" xlink:to="lab_gbdc_BBBClassD2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DerivativeAverageNotionalAmount_a41b6feb-482a-485d-b0b6-c55fe73b24a4_terseLabel_en-US" xlink:label="lab_gbdc_DerivativeAverageNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average U.S. Dollar notional outstanding </link:label>

<link:label id="lab_gbdc_DerivativeAverageNotionalAmount_label_en-US" xlink:label="lab_gbdc_DerivativeAverageNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative, Average Notional Amount </link:label>

<link:label id="lab_gbdc_DerivativeAverageNotionalAmount_documentation_en-US" xlink:label="lab_gbdc_DerivativeAverageNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative, Average Notional Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DerivativeAverageNotionalAmount" xlink:href="gbdc-20230930.xsd#gbdc_DerivativeAverageNotionalAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DerivativeAverageNotionalAmount" xlink:to="lab_gbdc_DerivativeAverageNotionalAmount" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_TrdArrIndName_terseLabel_en-US" xlink:label="lab_ecd_TrdArrIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Name </link:label>

<link:label id="lab_ecd_TrdArrIndName_label_en-US" xlink:label="lab_ecd_TrdArrIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Trading Arrangement, Individual Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrIndName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_TrdArrIndName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_TrdArrIndName" xlink:to="lab_ecd_TrdArrIndName" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare_5ac25481-3460-4537-a3e8-df8c6c49573b_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net change in unrealized appreciation (depreciation) on investment transactions (in dollars per share) </link:label>

<link:label id="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Gain (Loss) On Unrealized Appreciation (Depreciation), Per Share </link:label>

<link:label id="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Gain (Loss) On Unrealized Appreciation (Depreciation), Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:to="lab_gbdc_InvestmentCompanyGainLossOnUnrealizedAppreciationDepreciationPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember_22b51deb-bd0a-4270-be5a-c53435c56b73_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cumulative Pre-Incentive Fee Net Investment Income </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember_label_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Cumulative Pre-Incentive Fee Net Investment Income [Member] </link:label>

<link:label id="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember_documentation_en-US" xlink:label="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Advisory Agreement, Cumulative Pre-Incentive Fee Net Investment Income </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:to="lab_gbdc_InvestmentAdvisoryAgreementCumulativePreIncentiveFeeNetInvestmentIncomeMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UnrealizedLossOnInvestment_b5d4a151-7fe0-4fe2-ab17-20cd84c7ce8e_terseLabel_en-US" xlink:label="lab_gbdc_UnrealizedLossOnInvestment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized loss on investment </link:label>

<link:label id="lab_gbdc_UnrealizedLossOnInvestment_label_en-US" xlink:label="lab_gbdc_UnrealizedLossOnInvestment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Loss On Investment </link:label>

<link:label id="lab_gbdc_UnrealizedLossOnInvestment_documentation_en-US" xlink:label="lab_gbdc_UnrealizedLossOnInvestment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized Loss On Investment </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UnrealizedLossOnInvestment" xlink:href="gbdc-20230930.xsd#gbdc_UnrealizedLossOnInvestment"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UnrealizedLossOnInvestment" xlink:to="lab_gbdc_UnrealizedLossOnInvestment" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_LongtermDebtTypeAxis_08300e13-4e3f-4dba-bb6f-2988327f4a6f_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Type [Axis] </link:label>

<link:label id="lab_us-gaap_LongtermDebtTypeAxis_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis" xlink:to="lab_us-gaap_LongtermDebtTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_dei_AmendmentFlag_592d6557-5f10-446f-8c6f-2d7b61c2ee73_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amendment Flag </link:label>

<link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag" xlink:to="lab_dei_AmendmentFlag" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SBICIVMember_c1fd0dab-14d2-4ab9-b59f-074e8d4529bc_terseLabel_en-US" xlink:label="lab_gbdc_SBICIVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC IV </link:label>

<link:label id="lab_gbdc_SBICIVMember_label_en-US" xlink:label="lab_gbdc_SBICIVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC IV [Member] </link:label>

<link:label id="lab_gbdc_SBICIVMember_documentation_en-US" xlink:label="lab_gbdc_SBICIVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBIC IV </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SBICIVMember" xlink:href="gbdc-20230930.xsd#gbdc_SBICIVMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SBICIVMember" xlink:to="lab_gbdc_SBICIVMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_355262c5-80bd-44f9-8623-50bfecf78b9f_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized depreciation on forward currency contracts </link:label>

<link:label id="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Liability, Subject to Master Netting Arrangement, Asset Offset </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:to="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract_d695d515-e93c-41ac-ba2f-a136bf29f344_terseLabel_en-US" xlink:label="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities: </link:label>

<link:label id="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract_label_en-US" xlink:label="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities: [Abstract] </link:label>

<link:label id="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract_documentation_en-US" xlink:label="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustments To Reconcile Net Increase (Decrease) In Net Assets Resulting From Operations To Net Cash Provided By (Used In) Operating Activities: </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:href="gbdc-20230930.xsd#gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="lab_gbdc_AdjustmentsToReconcileNetIncreaseDecreaseInNetAssetsResultingFromOperationsToNetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember_cee7d6e4-2c35-4d5c-a4cc-f40642864192_terseLabel_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments and Components </link:label>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember_label_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments And Components Sector [Member] </link:label>

<link:label id="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember_documentation_en-US" xlink:label="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Electronic Equipment, Instruments And Components Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:to="lab_gbdc_ElectronicEquipmentInstrumentsAndComponentsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TaxPeriodDomain_76f432e8-229d-4204-9fc6-23459d934e3f_terseLabel_en-US" xlink:label="lab_us-gaap_TaxPeriodDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Period [Domain] </link:label>

<link:label id="lab_us-gaap_TaxPeriodDomain_label_en-US" xlink:label="lab_us-gaap_TaxPeriodDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Period [Domain] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxPeriodDomain"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxPeriodDomain" xlink:to="lab_us-gaap_TaxPeriodDomain" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InterestPaidNet_e0f7e307-5e6b-40c0-87e7-8924bed8c4eb_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash paid during the period for interest </link:label>

<link:label id="lab_us-gaap_InterestPaidNet_0514a28c-dd61-4f88-9863-70e7d984e933_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash paid for interest expense </link:label>

<link:label id="lab_us-gaap_InterestPaidNet_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Interest Paid, Excluding Capitalized Interest, Operating Activities </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestPaidNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaidNet" xlink:to="lab_us-gaap_InterestPaidNet" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare_74aac785-5d73-4ed0-822e-3f08f9ddd2a0_terseLabel_en-US" xlink:label="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Average debt outstanding per share (in dollars per share) </link:label>

<link:label id="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare_label_en-US" xlink:label="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Average Amount Outstanding, Per Share </link:label>

<link:label id="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare_documentation_en-US" xlink:label="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Long-Term Debt, Average Amount Outstanding, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:href="gbdc-20230930.xsd#gbdc_LongTermDebtAverageAmountOutstandingPerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:to="lab_gbdc_LongTermDebtAverageAmountOutstandingPerShare" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember_2da2cdc2-3f1b-4de9-8707-dd49b7b02fa3_terseLabel_en-US" xlink:label="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel and Luxury Goods </link:label>

<link:label id="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember_label_en-US" xlink:label="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel And Luxury Goods Sector [Member] </link:label>

<link:label id="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember_documentation_en-US" xlink:label="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Textiles, Apparel And Luxury Goods Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_TextilesApparelAndLuxuryGoodsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:to="lab_gbdc_TextilesApparelAndLuxuryGoodsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_0208633d-7398-4b96-bc65-451938319529_terseLabel_en-US" xlink:label="lab_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Interest Type [Axis] </link:label>

<link:label id="lab_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_label_en-US" xlink:label="lab_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Equity Interest Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityInterestIssuedOrIssuableByTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis" xlink:to="lab_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentCompanyMarketValuePerShare_75e43f6f-8259-422f-bb47-39c51fdbd18d_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentCompanyMarketValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Per share market value at end of period (in dollars per share) </link:label>

<link:label id="lab_us-gaap_InvestmentCompanyMarketValuePerShare_label_en-US" xlink:label="lab_us-gaap_InvestmentCompanyMarketValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Market Value, Per Share </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyMarketValuePerShare" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentCompanyMarketValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentCompanyMarketValuePerShare" xlink:to="lab_us-gaap_InvestmentCompanyMarketValuePerShare" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_BusinessCombinationsPolicy_255b475b-4151-44f3-936e-7089047db099_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Purchase accounting </link:label>

<link:label id="lab_us-gaap_BusinessCombinationsPolicy_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Business Combinations Policy [Policy Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationsPolicy" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationsPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsPolicy" xlink:to="lab_us-gaap_BusinessCombinationsPolicy" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ShortTermApplicableFederalRateMember_ce869f09-a8a6-4880-9821-27bfdbbedb11_terseLabel_en-US" xlink:label="lab_gbdc_ShortTermApplicableFederalRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Short-term Applicable Federal Rate </link:label>

<link:label id="lab_gbdc_ShortTermApplicableFederalRateMember_label_en-US" xlink:label="lab_gbdc_ShortTermApplicableFederalRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Short-term Applicable Federal Rate [Member] </link:label>

<link:label id="lab_gbdc_ShortTermApplicableFederalRateMember_documentation_en-US" xlink:label="lab_gbdc_ShortTermApplicableFederalRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Short-term Applicable Federal Rate </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ShortTermApplicableFederalRateMember" xlink:href="gbdc-20230930.xsd#gbdc_ShortTermApplicableFederalRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ShortTermApplicableFederalRateMember" xlink:to="lab_gbdc_ShortTermApplicableFederalRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_0e76b5e1-5408-4708-a5cb-148a15ed64dd_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diluted weighted average common shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_bb19b06a-dafd-41ad-8e68-e0a2b8f30982_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diluted weighted average shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Diluted </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DebtSecuritizationTypeAxis_ab5cb513-2df0-4848-bd9f-ed687c76258e_terseLabel_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type [Axis] </link:label>

<link:label id="lab_gbdc_DebtSecuritizationTypeAxis_label_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type [Axis] </link:label>

<link:label id="lab_gbdc_DebtSecuritizationTypeAxis_documentation_en-US" xlink:label="lab_gbdc_DebtSecuritizationTypeAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Securitization Type </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DebtSecuritizationTypeAxis" xlink:href="gbdc-20230930.xsd#gbdc_DebtSecuritizationTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DebtSecuritizationTypeAxis" xlink:to="lab_gbdc_DebtSecuritizationTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock_terseLabel_en-US" xlink:label="lab_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery, Explanation of Impracticability </link:label>

<link:label id="lab_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock_label_en-US" xlink:label="lab_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Forgone Recovery, Explanation of Impracticability [Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:to="lab_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SoftwareSectorMember_6c1b6ac6-5cf1-4d47-b17f-ddda72125456_terseLabel_en-US" xlink:label="lab_gbdc_SoftwareSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Software </link:label>

<link:label id="lab_gbdc_SoftwareSectorMember_label_en-US" xlink:label="lab_gbdc_SoftwareSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Software Sector [Member] </link:label>

<link:label id="lab_gbdc_SoftwareSectorMember_documentation_en-US" xlink:label="lab_gbdc_SoftwareSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Software Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SoftwareSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_SoftwareSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SoftwareSectorMember" xlink:to="lab_gbdc_SoftwareSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PoliticalUncertaintyRiskMember_label_en-US" xlink:label="lab_gbdc_PoliticalUncertaintyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Political Uncertainty Risk [Member] </link:label>

<link:label id="lab_gbdc_PoliticalUncertaintyRiskMember_documentation_en-US" xlink:label="lab_gbdc_PoliticalUncertaintyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Political Uncertainty Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PoliticalUncertaintyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PoliticalUncertaintyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PoliticalUncertaintyRiskMember" xlink:to="lab_gbdc_PoliticalUncertaintyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_FluctuationInQuarterlyOperationResultsRiskMember_label_en-US" xlink:label="lab_gbdc_FluctuationInQuarterlyOperationResultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation In Quarterly Operation Results Risk [Member] </link:label>

<link:label id="lab_gbdc_FluctuationInQuarterlyOperationResultsRiskMember_documentation_en-US" xlink:label="lab_gbdc_FluctuationInQuarterlyOperationResultsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fluctuation In Quarterly Operation Results Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_FluctuationInQuarterlyOperationResultsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_FluctuationInQuarterlyOperationResultsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_FluctuationInQuarterlyOperationResultsRiskMember" xlink:to="lab_gbdc_FluctuationInQuarterlyOperationResultsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_MoneyMarketFundsAtCarryingValue_23ef3850-7283-4738-a74e-206ddf1bb883_terseLabel_en-US" xlink:label="lab_us-gaap_MoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money market funds, at carrying value </link:label>

<link:label id="lab_us-gaap_MoneyMarketFundsAtCarryingValue_label_en-US" xlink:label="lab_us-gaap_MoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Money Market Funds, at Carrying Value </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsAtCarryingValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MoneyMarketFundsAtCarryingValue" xlink:to="lab_us-gaap_MoneyMarketFundsAtCarryingValue" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold_b11e3071-2dca-451e-8adf-a61e1509edee_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Receivable from investments sold </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Increase (Decrease) in Receivable for Investment Sold </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInReceivableForInvestmentSold"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold" xlink:to="lab_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_OperatingExpensesAbstract_2143f7bf-b98a-47c1-b83c-44e734cb061e_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Expenses </link:label>

<link:label id="lab_us-gaap_OperatingExpensesAbstract_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Operating Expenses [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpensesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract" xlink:to="lab_us-gaap_OperatingExpensesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_MediaSectorMember_1b469b4d-6d55-465c-9486-de418cf76b69_terseLabel_en-US" xlink:label="lab_gbdc_MediaSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Media </link:label>

<link:label id="lab_gbdc_MediaSectorMember_label_en-US" xlink:label="lab_gbdc_MediaSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Media Sector [Member] </link:label>

<link:label id="lab_gbdc_MediaSectorMember_documentation_en-US" xlink:label="lab_gbdc_MediaSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Media Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_MediaSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_MediaSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_MediaSectorMember" xlink:to="lab_gbdc_MediaSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_CoSelectedMeasureAmt_terseLabel_en-US" xlink:label="lab_ecd_CoSelectedMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Company Selected Measure Amount </link:label>

<link:label id="lab_ecd_CoSelectedMeasureAmt_label_en-US" xlink:label="lab_ecd_CoSelectedMeasureAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Company Selected Measure Amount </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_CoSelectedMeasureAmt" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_CoSelectedMeasureAmt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_CoSelectedMeasureAmt" xlink:to="lab_ecd_CoSelectedMeasureAmt" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember_31b86dc3-a8ed-4edb-92a0-1970dd57f693_terseLabel_en-US" xlink:label="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A-1 GCIC 2018 Notes </link:label>

<link:label id="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember_label_en-US" xlink:label="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A-1 GCIC 2018 Notes [Member] </link:label>

<link:label id="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember_documentation_en-US" xlink:label="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> AAA/AAA Class A-1 GCIC 2018 Notes </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:href="gbdc-20230930.xsd#gbdc_AAAAAAClassA1GCIC2018NotesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:to="lab_gbdc_AAAAAAClassA1GCIC2018NotesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LifeSciencesToolsAndServicesSectorMember_99cfecb4-b42f-4a6c-b51f-5da0471d1782_terseLabel_en-US" xlink:label="lab_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools & Services </link:label>

<link:label id="lab_gbdc_LifeSciencesToolsAndServicesSectorMember_label_en-US" xlink:label="lab_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools And Services Sector [Member] </link:label>

<link:label id="lab_gbdc_LifeSciencesToolsAndServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Life Sciences Tools And Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_LifeSciencesToolsAndServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:to="lab_gbdc_LifeSciencesToolsAndServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_EconomicRecessionsOrDownturnsRiskMember_label_en-US" xlink:label="lab_gbdc_EconomicRecessionsOrDownturnsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Economic Recessions Or Downturns Risk [Member] </link:label>

<link:label id="lab_gbdc_EconomicRecessionsOrDownturnsRiskMember_documentation_en-US" xlink:label="lab_gbdc_EconomicRecessionsOrDownturnsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Economic Recessions Or Downturns Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_EconomicRecessionsOrDownturnsRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_EconomicRecessionsOrDownturnsRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_EconomicRecessionsOrDownturnsRiskMember" xlink:to="lab_gbdc_EconomicRecessionsOrDownturnsRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems_0dce4bd6-e6a3-43eb-be75-3bf434afb7f3_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, Owned, Federal Income Tax Note [Line Items] </link:label>

<link:label id="lab_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems_label_en-US" xlink:label="lab_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investments, Owned, Federal Income Tax Note [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems" xlink:to="lab_us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember_label_en-US" xlink:label="lab_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prevention From Receiving Cash From Funding Subsidiary Risk [Member] </link:label>

<link:label id="lab_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember_documentation_en-US" xlink:label="lab_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Prevention From Receiving Cash From Funding Subsidiary Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember" xlink:to="lab_gbdc_PreventionFromReceivingCashFromFundingSubsidiaryRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_Assets_967364e8-8edd-4c2d-98b7-ea3de6744555_totalLabel_en-US" xlink:label="lab_us-gaap_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total Assets </link:label>

<link:label id="lab_us-gaap_Assets_label_en-US" xlink:label="lab_us-gaap_Assets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Assets </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets" xlink:to="lab_us-gaap_Assets" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscIndName_terseLabel_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Name </link:label>

<link:label id="lab_ecd_AwardsCloseToMnpiDiscIndName_label_en-US" xlink:label="lab_ecd_AwardsCloseToMnpiDiscIndName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Awards Close in Time to MNPI Disclosures, Individual Name </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscIndName" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AwardsCloseToMnpiDiscIndName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AwardsCloseToMnpiDiscIndName" xlink:to="lab_ecd_AwardsCloseToMnpiDiscIndName" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AdverseEffectOnMarketPriceRiskMember_label_en-US" xlink:label="lab_gbdc_AdverseEffectOnMarketPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Effect On Market Price Risk [Member] </link:label>

<link:label id="lab_gbdc_AdverseEffectOnMarketPriceRiskMember_documentation_en-US" xlink:label="lab_gbdc_AdverseEffectOnMarketPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adverse Effect On Market Price Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AdverseEffectOnMarketPriceRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AdverseEffectOnMarketPriceRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AdverseEffectOnMarketPriceRiskMember" xlink:to="lab_gbdc_AdverseEffectOnMarketPriceRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_SBADebenturesMember_fb012498-28fc-4dfd-b7bf-15a78f93e845_terseLabel_en-US" xlink:label="lab_gbdc_SBADebenturesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBA Debentures </link:label>

<link:label id="lab_gbdc_SBADebenturesMember_label_en-US" xlink:label="lab_gbdc_SBADebenturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBA Debentures [Member] </link:label>

<link:label id="lab_gbdc_SBADebenturesMember_documentation_en-US" xlink:label="lab_gbdc_SBADebenturesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> SBA Debentures </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_SBADebenturesMember" xlink:href="gbdc-20230930.xsd#gbdc_SBADebenturesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_SBADebenturesMember" xlink:to="lab_gbdc_SBADebenturesMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HotelsRestaurantsLeisureSectorMember_c9155999-7f3d-483b-9f17-85413408ee7b_terseLabel_en-US" xlink:label="lab_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants & Leisure </link:label>

<link:label id="lab_gbdc_HotelsRestaurantsLeisureSectorMember_label_en-US" xlink:label="lab_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants & Leisure Sector [Member] </link:label>

<link:label id="lab_gbdc_HotelsRestaurantsLeisureSectorMember_documentation_en-US" xlink:label="lab_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Hotels, Restaurants & Leisure Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HotelsRestaurantsLeisureSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:to="lab_gbdc_HotelsRestaurantsLeisureSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateDuringPeriod_0351737f-15ce-4d36-83fa-671dd0488473_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt instrument, interest rate during period </link:label>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateDuringPeriod_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument, Interest Rate During Period </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateDuringPeriod"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:to="lab_us-gaap_DebtInstrumentInterestRateDuringPeriod" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonNeosMember_terseLabel_en-US" xlink:label="lab_ecd_NonNeosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-NEOs </link:label>

<link:label id="lab_ecd_NonNeosMember_label_en-US" xlink:label="lab_ecd_NonNeosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-NEOs [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonNeosMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonNeosMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonNeosMember" xlink:to="lab_ecd_NonNeosMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_AssetConcentrationRiskMember_8ee93c45-1525-4b7e-a84b-34d7a3111ff5_terseLabel_en-US" xlink:label="lab_gbdc_AssetConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Concentration Risk </link:label>

<link:label id="lab_gbdc_AssetConcentrationRiskMember_label_en-US" xlink:label="lab_gbdc_AssetConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Concentration Risk [Member] </link:label>

<link:label id="lab_gbdc_AssetConcentrationRiskMember_documentation_en-US" xlink:label="lab_gbdc_AssetConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Asset Concentration Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_AssetConcentrationRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_AssetConcentrationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_AssetConcentrationRiskMember" xlink:to="lab_gbdc_AssetConcentrationRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HealthCareEquipmentSuppliesSectorMember_71d24be2-fa2d-47bc-92cd-9b34f7144613_terseLabel_en-US" xlink:label="lab_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Equipment & Supplies </link:label>

<link:label id="lab_gbdc_HealthCareEquipmentSuppliesSectorMember_label_en-US" xlink:label="lab_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Equipment & Supplies Sector [Member] </link:label>

<link:label id="lab_gbdc_HealthCareEquipmentSuppliesSectorMember_documentation_en-US" xlink:label="lab_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Health Care Equipment & Supplies Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HealthCareEquipmentSuppliesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:to="lab_gbdc_HealthCareEquipmentSuppliesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_ae9d15d9-74bd-41a6-8809-8102ea1e2f90_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] </link:label>

<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_a0703f1b-1342-44e6-9f4b-71dc47a89521_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Cash flows from financing activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_GrossInvestmentIncomeOperating_d38587bf-dac4-479e-a6cc-38099df647ff_totalLabel_en-US" xlink:label="lab_us-gaap_GrossInvestmentIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Total investment income </link:label>

<link:label id="lab_us-gaap_GrossInvestmentIncomeOperating_label_en-US" xlink:label="lab_us-gaap_GrossInvestmentIncomeOperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Gross Investment Income, Operating </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossInvestmentIncomeOperating" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossInvestmentIncomeOperating"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating" xlink:to="lab_us-gaap_GrossInvestmentIncomeOperating" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_NonPeoNeoMember_terseLabel_en-US" xlink:label="lab_ecd_NonPeoNeoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO </link:label>

<link:label id="lab_ecd_NonPeoNeoMember_label_en-US" xlink:label="lab_ecd_NonPeoNeoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Non-PEO NEO [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_NonPeoNeoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_NonPeoNeoMember" xlink:to="lab_ecd_NonPeoNeoMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_OtherShortTermBorrowingsMember_9657ac2b-785e-47dc-957a-f193d8136ab3_terseLabel_en-US" xlink:label="lab_gbdc_OtherShortTermBorrowingsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Short-Term Borrowings </link:label>

<link:label id="lab_gbdc_OtherShortTermBorrowingsMember_label_en-US" xlink:label="lab_gbdc_OtherShortTermBorrowingsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Short-Term Borrowings [Member] </link:label>

<link:label id="lab_gbdc_OtherShortTermBorrowingsMember_documentation_en-US" xlink:label="lab_gbdc_OtherShortTermBorrowingsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Other Short-Term Borrowings </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_OtherShortTermBorrowingsMember" xlink:href="gbdc-20230930.xsd#gbdc_OtherShortTermBorrowingsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_OtherShortTermBorrowingsMember" xlink:to="lab_gbdc_OtherShortTermBorrowingsMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_UsTreasuryUstInterestRateMember_974206b8-7ccf-429c-b774-05de5f784d0f_terseLabel_en-US" xlink:label="lab_us-gaap_UsTreasuryUstInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Treasury (UST) Interest Rate </link:label>

<link:label id="lab_us-gaap_UsTreasuryUstInterestRateMember_label_en-US" xlink:label="lab_us-gaap_UsTreasuryUstInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Treasury (UST) Interest Rate [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UsTreasuryUstInterestRateMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UsTreasuryUstInterestRateMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UsTreasuryUstInterestRateMember" xlink:to="lab_us-gaap_UsTreasuryUstInterestRateMember" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_AdjToCompAxis_terseLabel_en-US" xlink:label="lab_ecd_AdjToCompAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Compensation: </link:label>

<link:label id="lab_ecd_AdjToCompAxis_label_en-US" xlink:label="lab_ecd_AdjToCompAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Adjustment to Compensation [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToCompAxis" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AdjToCompAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_AdjToCompAxis" xlink:to="lab_ecd_AdjToCompAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee_3505444d-c822-4c0e-ae2d-87bacbb321bb_terseLabel_en-US" xlink:label="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment company, contractual fee waived, management fee </link:label>

<link:label id="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee_label_en-US" xlink:label="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Contractual Fee Waived, Management Fee </link:label>

<link:label id="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee_documentation_en-US" xlink:label="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment Company, Contractual Fee Waived, Management Fee </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:href="gbdc-20230930.xsd#gbdc_InvestmentCompanyContractualFeeWaivedManagementFee"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:to="lab_gbdc_InvestmentCompanyContractualFeeWaivedManagementFee" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DerivativeAssetFairValueGrossLiability_4bc3a788-f6fc-4b7b-b56b-882da5d14fc9_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssetFairValueGrossLiability" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Unrealized depreciation on forward currency contracts </link:label>

<link:label id="lab_us-gaap_DerivativeAssetFairValueGrossLiability_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetFairValueGrossLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Derivative Asset, Subject to Master Netting Arrangement, Liability Offset </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossLiability" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetFairValueGrossLiability"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssetFairValueGrossLiability" xlink:to="lab_us-gaap_DerivativeAssetFairValueGrossLiability" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember_label_en-US" xlink:label="lab_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lack Of Available Information On Privately Held Company Risk [Member] </link:label>

<link:label id="lab_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember_documentation_en-US" xlink:label="lab_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Lack Of Available Information On Privately Held Company Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember" xlink:to="lab_gbdc_LackOfAvailableInformationOnPrivatelyHeldCompanyRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_srt_StatementScenarioAxis_acc4b13a-21b7-4419-8cf9-dcde91d9590d_terseLabel_en-US" xlink:label="lab_srt_StatementScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scenario [Axis] </link:label>

<link:label id="lab_srt_StatementScenarioAxis_label_en-US" xlink:label="lab_srt_StatementScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Scenario [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementScenarioAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementScenarioAxis" xlink:to="lab_srt_StatementScenarioAxis" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_78519861-e831-495c-8059-8c370d369503_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Amount of ordinary losses deferred </link:label>

<link:label id="lab_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Deferred Tax Assets, Operating Loss Carryforwards </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="lab_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_DebtInstrumentLineItems_6705f678-1c3e-4e2f-80e4-5bc4966f1414_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentLineItems_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems" xlink:to="lab_us-gaap_DebtInstrumentLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_82ca8d75-c7ee-4b8a-828c-daf18545b171_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basic weighted average common shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_92daf7bb-9998-4e67-8aaf-a25d54418b99_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Basic weighted average shares outstanding (in shares) </link:label>

<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Basic </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_A2020DebtSecuritizationMember_a703e7ad-e8cb-410f-a40c-44eb42d955fc_terseLabel_en-US" xlink:label="lab_gbdc_A2020DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2020 Debt Securitization </link:label>

<link:label id="lab_gbdc_A2020DebtSecuritizationMember_label_en-US" xlink:label="lab_gbdc_A2020DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2020 Debt Securitization [Member] </link:label>

<link:label id="lab_gbdc_A2020DebtSecuritizationMember_documentation_en-US" xlink:label="lab_gbdc_A2020DebtSecuritizationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> 2020 Debt Securitization </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_A2020DebtSecuritizationMember" xlink:href="gbdc-20230930.xsd#gbdc_A2020DebtSecuritizationMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_A2020DebtSecuritizationMember" xlink:to="lab_gbdc_A2020DebtSecuritizationMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HouseholdProductsSectorMember_899d86e3-5886-4f5f-ad0f-db828bf09a74_terseLabel_en-US" xlink:label="lab_gbdc_HouseholdProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Products </link:label>

<link:label id="lab_gbdc_HouseholdProductsSectorMember_label_en-US" xlink:label="lab_gbdc_HouseholdProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Products Sector [Member] </link:label>

<link:label id="lab_gbdc_HouseholdProductsSectorMember_documentation_en-US" xlink:label="lab_gbdc_HouseholdProductsSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Household Products Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HouseholdProductsSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HouseholdProductsSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HouseholdProductsSectorMember" xlink:to="lab_gbdc_HouseholdProductsSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan_4bf9c28b-ad42-4e66-b099-5392b3153fae_terseLabel_en-US" xlink:label="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds from stock issued during period, amount, DRIP </link:label>

<link:label id="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan_label_en-US" xlink:label="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Stock Issued During Period, Amount, Dividend Reinvestment Plan </link:label>

<link:label id="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan_documentation_en-US" xlink:label="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Proceeds From Stock Issued During Period, Amount, Dividend Reinvestment Plan </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:href="gbdc-20230930.xsd#gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:to="lab_gbdc_ProceedsFromStockIssuedDuringPeriodAmountDividendReinvestmentPlan" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_98a5b2d2-9eca-410b-bd5b-59850eb55e96_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember_e896c715-9a2f-41ef-9a83-adacff37f85b_terseLabel_en-US" xlink:label="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Telecommunication Services </link:label>

<link:label id="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember_label_en-US" xlink:label="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Telecommunication Services Sector [Member] </link:label>

<link:label id="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Diversified Telecommunication Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_DiversifiedTelecommunicationServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:to="lab_gbdc_DiversifiedTelecommunicationServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RevenuesAbstract_73325a47-69b3-4661-a7cd-1fb62bb8de38_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Investment income </link:label>

<link:label id="lab_us-gaap_RevenuesAbstract_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Revenues [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenuesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract" xlink:to="lab_us-gaap_RevenuesAbstract" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_QualifyingAssetTypeAxis_f556e94b-bf5e-4ee8-a98a-f38ee490c222_terseLabel_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type [Axis] </link:label>

<link:label id="lab_gbdc_QualifyingAssetTypeAxis_label_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type [Axis] </link:label>

<link:label id="lab_gbdc_QualifyingAssetTypeAxis_documentation_en-US" xlink:label="lab_gbdc_QualifyingAssetTypeAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Qualifying Asset Type </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_QualifyingAssetTypeAxis" xlink:href="gbdc-20230930.xsd#gbdc_QualifyingAssetTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_QualifyingAssetTypeAxis" xlink:to="lab_gbdc_QualifyingAssetTypeAxis" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_HealthcareProvidersAndServicesSectorMember_e11b409f-5e9d-4635-a809-fed6617c5395_terseLabel_en-US" xlink:label="lab_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Providers and Services </link:label>

<link:label id="lab_gbdc_HealthcareProvidersAndServicesSectorMember_label_en-US" xlink:label="lab_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Providers And Services Sector [Member] </link:label>

<link:label id="lab_gbdc_HealthcareProvidersAndServicesSectorMember_documentation_en-US" xlink:label="lab_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Healthcare Providers And Services Sector </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:href="gbdc-20230930.xsd#gbdc_HealthcareProvidersAndServicesSectorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:to="lab_gbdc_HealthcareProvidersAndServicesSectorMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_78e3d969-77bd-4e31-8613-15acddb84c54_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>

<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RelatedPartyTransactionAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis" xlink:to="lab_us-gaap_RelatedPartyTransactionAxis" xlink:type="arc" order="1"/>

<link:label id="lab_ecd_PvpTable_terseLabel_en-US" xlink:label="lab_ecd_PvpTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pay vs Performance Disclosure </link:label>

<link:label id="lab_ecd_PvpTable_label_en-US" xlink:label="lab_ecd_PvpTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Pay vs Performance Disclosure [Table] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_ecd_PvpTable" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_PvpTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ecd_PvpTable" xlink:to="lab_ecd_PvpTable" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_StatementLineItems_7a622503-56d2-475d-a85e-840a9316cc0c_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement [Line Items] </link:label>

<link:label id="lab_us-gaap_StatementLineItems_label_en-US" xlink:label="lab_us-gaap_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Statement [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems" xlink:to="lab_us-gaap_StatementLineItems" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_SouthwestRegionMember_35027093-e87f-4ea1-9a50-6322121e401c_terseLabel_en-US" xlink:label="lab_us-gaap_SouthwestRegionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Southwest </link:label>

<link:label id="lab_us-gaap_SouthwestRegionMember_label_en-US" xlink:label="lab_us-gaap_SouthwestRegionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> US Southwest Region [Member] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SouthwestRegionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SouthwestRegionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SouthwestRegionMember" xlink:to="lab_us-gaap_SouthwestRegionMember" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember_label_en-US" xlink:label="lab_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Uncertainty On Value Of The Portfolio Investment Risk [Member] </link:label>

<link:label id="lab_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember_documentation_en-US" xlink:label="lab_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Uncertainty On Value Of The Portfolio Investment Risk </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember" xlink:href="gbdc-20230930.xsd#gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember" xlink:to="lab_gbdc_UncertaintyOnValueOfThePortfolioInvestmentRiskMember" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_21558277-684b-4305-a2d2-cc1cc22f7af7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Summary of Average Outstanding Daily Volume for Forward Currency Contract </link:label>

<link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Derivative Instruments [Table Text Block] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDerivativeInstrumentsTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:to="lab_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock_e4da7e88-32ab-4f40-a9d2-0cc43d7a540b_terseLabel_en-US" xlink:label="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule of Stock Repurchase Program </link:label>

<link:label id="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock_label_en-US" xlink:label="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Stock Repurchase Program [Table Text Block] </link:label>

<link:label id="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock_documentation_en-US" xlink:label="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Schedule Of Stock Repurchase Program </link:label>

<link:loc xlink:type="locator" xlink:label="loc_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:href="gbdc-20230930.xsd#gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:to="lab_gbdc_ScheduleOfStockRepurchaseProgramTableTextBlock" xlink:type="arc" order="1"/>

<link:label id="lab_us-gaap_TaxCreditCarryforwardAxis_e06527b4-f62a-4680-9a1e-ad130046ce42_terseLabel_en-US" xlink:label="lab_us-gaap_TaxCreditCarryforwardAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Credit Carryforward [Axis] </link:label>

<link:label id="lab_us-gaap_TaxCreditCarryforwardAxis_label_en-US" xlink:label="lab_us-gaap_TaxCreditCarryforwardAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US"> Tax Credit Carryforward [Axis] </link:label>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis" xlink:to="lab_us-gaap_TaxCreditCarryforwardAxis" xlink:type="arc" order="1"/>

</link:labelLink>

</link:linkbase>

4 Subsequent Filings that Reference this Filing

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 4/15/24  Golub Capital BDC 3, Inc.         DEFM14A                1:8.8M                                   Toppan Merrill/FA
 4/15/24  GOLUB CAPITAL BDC, Inc.           424B3                  1:8.8M                                   Toppan Merrill/FA
 4/12/24  GOLUB CAPITAL BDC, Inc.           N-14 8C/A              9:9.6M                                   Toppan Merrill/FA
 2/23/24  GOLUB CAPITAL BDC, Inc.           N-14 8C                8:8.9M                                   Toppan Merrill/FA

28 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

10/10/23  GOLUB CAPITAL BDC, Inc.           8-K:1,9    10/06/23   12:583K                                   Toppan Merrill/FA
 8/07/23  GOLUB CAPITAL BDC, Inc.           10-Q        6/30/23   81:64M
 6/30/23  GOLUB CAPITAL BDC, Inc.           8-K:1,9     6/30/23   12:967K                                   Toppan Merrill/FA
 3/20/23  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9   3/17/23   11:1.4M                                   Toppan Merrill/FA
11/21/22  GOLUB CAPITAL BDC, Inc.           10-K        9/30/22   93:144M
 9/20/22  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9   9/16/22   11:211K                                   Toppan Merrill/FA
 9/08/22  GOLUB CAPITAL BDC, Inc.           8-K:1,9     9/02/22   11:1.6M                                   Toppan Merrill/FA
 6/16/22  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9   6/15/22    2:42K
12/21/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  12/17/21    2:37K                                    Toppan Merrill/FA
12/14/21  GOLUB CAPITAL BDC, Inc.           8-K/A:9    11/19/21    2:1.2M                                   Toppan Merrill/FA
11/24/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  11/19/21    3:1.1M                                   Toppan Merrill/FA
10/18/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  10/14/21    2:43K                                    Toppan Merrill/FA
 8/03/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9   8/03/21    3:174K                                   Toppan Merrill/FA
 2/24/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9   2/24/21    3:188K                                   Toppan Merrill/FA
 2/12/21  GOLUB CAPITAL BDC, Inc.           8-K:1,2,7,9 2/11/21    3:1M                                     Toppan Merrill/FA
 2/08/21  GOLUB CAPITAL BDC, Inc.           10-Q       12/31/20    6:17M
10/05/20  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  10/02/20    4:683K                                   Toppan Merrill/FA
 2/10/20  GOLUB CAPITAL BDC, Inc.           10-Q       12/31/19    6:16M
10/31/19  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  10/31/19    2:72K
 9/04/19  GOLUB CAPITAL BDC, Inc.           8-K:5,7,9   9/04/19    3:83K
 6/25/19  GOLUB CAPITAL BDC, Inc.           8-K:1,9     6/21/19    2:105K
12/19/18  Golub Capital Investment Corp.    8-K:1,2,9  12/13/18    7:3.5M                                   Toppan Merrill/FA
11/21/18  GOLUB CAPITAL BDC, Inc.           8-K:1,2,9  11/16/18    5:3.3M                                   Toppan Merrill/FA
 8/26/11  Golub Capital BDC, Inc.           N-2/A       8/25/11   10:9.5M                                   Toppan Merrill/FA
 6/07/11  Golub Capital BDC, Inc.           N-2                    8:8.2M                                   Toppan Merrill/FA
 5/05/11  Golub Capital BDC, Inc.           8-K:1,9     5/03/11    2:47K                                    Toppan Merrill/FA
 4/12/10  GOLUB CAPITAL BDC, Inc.           N-2/A                  4:794K                                   Toppan Merrill/FA
 3/25/10  GOLUB CAPITAL BDC, Inc.           N-2/A                 13:1M                                     Toppan Merrill/FA

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Filing Submission 0001476765-23-000077 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)