SEC Info - Kraig Biocraft Laboratories, Inc - ‘S-1’ on 6/2/20

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Kraig Biocraft Laboratories, Inc – ‘S-1’ on 6/2/20 – ‘EX-101.LAB’

On: Tuesday, 6/2/20, at 4:47pm ET · Accession #: 1493152-20-10402 · File #: 333-238883

Previous ‘S-1’: ‘S-1/A’ on 6/2/15 · Next: ‘S-1/A’ on 8/24/20 · Latest: ‘S-1/A’ on 11/22/23 · 22 References:

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

 6/02/20  Kraig Biocraft Laboratories, Inc  S-1                   71:7.9M                                   M2 Compliance/FA

Registration Statement (General Form) — Form S-1
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: S-1         Registration Statement (General Form)               HTML   1.20M 
 2: EX-14.2     Code of Ethics                                      HTML     72K 
 3: EX-23.1     Consent of Experts or Counsel                       HTML     21K 
 4: EX-99.1     Miscellaneous Exhibit                               HTML     61K 
 5: EX-99.2     Miscellaneous Exhibit                               HTML     47K 
 6: EX-99.3     Miscellaneous Exhibit                               HTML     42K 
14: R1          Document Entity Information                         HTML     34K 
48: R2          Condensed Consolidated Balance Sheets               HTML    120K 
58: R3          Condensed Consolidated Balance Sheets               HTML     49K 
                (Parenthetical)                                                  
31: R4          Condensed Consolidated Statements of Operations     HTML     89K 
15: R5          Condensed Consolidated Statement of Changes in      HTML     79K 
                Stockholders Deficit                                             
49: R6          Condensed Consolidated Statement of Changes in      HTML     25K 
                Stockholders Deficit (Parenthetical)                             
59: R7          Condensed Consolidated Statements of Cash Flows     HTML    110K 
32: R8          Summary of Significant Accounting Policies and      HTML    114K 
                Organization                                                     
13: R9          Going Concern                                       HTML     28K 
37: R10         Equipment                                           HTML     35K 
20: R11         Right to Use Assets and Lease Liability             HTML     56K 
50: R12         Accrued Interest - Related Party                    HTML     32K 
60: R13         Note Payable                                        HTML     28K 
38: R14         Stockholders' Deficit                               HTML    157K 
21: R15         Commitments and Contingencies                       HTML     81K 
51: R16         Related Party Transactions                          HTML     63K 
61: R17         Subsequent Events                                   HTML     29K 
39: R18         Summary of Significant Accounting Policies and      HTML    153K 
                Organization (Policies)                                          
19: R19         Summary of Significant Accounting Policies and      HTML     62K 
                Organization (Tables)                                            
41: R20         Equipment (Tables)                                  HTML     33K 
66: R21         Right to Use Assets and Lease Liability (Tables)    HTML     40K 
26: R22         Stockholders' Deficit (Tables)                      HTML    145K 
22: R23         Summary of Significant Accounting Policies and      HTML     49K 
                Organization (Details Narrative)                                 
42: R24         Summary of Significant Accounting Policies and      HTML     43K 
                Organization (Details Narrative) (10-K)                          
67: R25         Summary of Significant Accounting Policies and      HTML     30K 
                Organization - Schedule of Antidilutive Securities               
                of Earnings Per Share (Details)                                  
27: R26         Summary of Significant Accounting Policies and      HTML     28K 
                Organization - Schedule of Antidilutive Securities               
                of Earnings Per Share (Details) (Parenthetical)                  
23: R27         Summary of Significant Accounting Policies and      HTML     35K 
                Organization - Schedule of Deferred Tax Assets and               
                Liabilities (Details) (10-K)                                     
40: R28         Summary of Significant Accounting Policies and      HTML     24K 
                Organization - Schedule of Deferred Tax Assets and               
                Liabilities (Details) (10-K) (Parenthetical)                     
68: R29         Summary of Significant Accounting Policies and      HTML     31K 
                Organization - Schedule of Components of Deferred                
                Income Taxes (Details) (10-K)                                    
64: R30         Summary of Significant Accounting Policies and      HTML     28K 
                Organization - Schedule of Fair Value of Financial               
                Instruments (Details)                                            
54: R31         Summary of Significant Accounting Policies and      HTML     34K 
                Organization - Schedule of Concentration of Credit               
                Risk (Details) (10-K)                                            
18: R32         Going Concern (Details Narrative)                   HTML     33K 
36: R33         Going Concern (Details Narrative) (10-K)            HTML     33K 
63: R34         Equipment (Details Narrative)                       HTML     25K 
53: R35         Equipment (Details Narrative) (10-K)                HTML     25K 
17: R36         Equipment - Schedule of Property and Equipment      HTML     37K 
                (Details)                                                        
35: R37         Right to Use Assets and Lease Liability - (Details  HTML     59K 
                Narrative)                                                       
62: R38         Right to Use Assets and Lease Liability - (Details  HTML     65K 
                Narrative) (10-K)                                                
55: R39         Right to Use Assets and Lease Liability - Schedule  HTML     28K 
                of Right Use of Assets (Details)                                 
71: R40         Right to Use Assets and Lease Liability - Schedule  HTML     33K 
                of Lease Liability (Details)                                     
44: R41         Right to Use Assets and Lease Liability - Schedule  HTML     27K 
                of Lease Cost (Details)                                          
25: R42         Accrued Interest - Related Party (Details           HTML     45K 
                Narrative)                                                       
30: R43         Accrued Interest - Related Party (Details           HTML     45K 
                Narrative) (10-K)                                                
70: R44         Note Payable (Details Narrative)                    HTML     41K 
43: R45         Note Payable (Details Narrative) (10-K)             HTML     41K 
24: R46         Stockholders' Deficit (Details Narrative)           HTML    186K 
29: R47         Stockholders' Deficit (Details Narrative) (10-K)    HTML    179K 
69: R48         Stockholders' Deficit - Schedule of Option          HTML     86K 
                Assumption (Details)                                             
45: R49         Stockholders' Deficit - Schedule of Warrants        HTML     52K 
                Activity (Details)                                               
46: R50         Stockholders' Deficit - Schedule of Warrants        HTML     59K 
                Outstanding (Details)                                            
56: R51         Stockholders' Deficit - Schedule of Options         HTML     31K 
                Outstanding (Details)                                            
33: R52         Commitments and Contingencies (Details Narrative)   HTML    355K 
16: R53         Commitments and Contingencies (Details Narrative)   HTML    311K 
                (10-K)                                                           
47: R54         Related Party Transactions (Details Narrative)      HTML    272K 
57: R55         Related Party Transactions (Details Narrative)      HTML    293K 
                (10-K)                                                           
34: R56         Subsequent Events (Details Narrative) (10-K)        HTML     35K 
65: XML         IDEA XML File -- Filing Summary                      XML    128K 
28: EXCEL       IDEA Workbook of Financial Reports                  XLSX     95K 
 7: EX-101.INS  XBRL Instance -- kblb-20200331                       XML   2.05M 
 9: EX-101.CAL  XBRL Calculations -- kblb-20200331_cal               XML    133K 
10: EX-101.DEF  XBRL Definitions -- kblb-20200331_def                XML    814K 
11: EX-101.LAB  XBRL Labels -- kblb-20200331_lab                     XML    909K 
12: EX-101.PRE  XBRL Presentations -- kblb-20200331_pre              XML    959K 
 8: EX-101.SCH  XBRL Schema -- kblb-20200331                         XSD    178K 
52: ZIP         XBRL Zipped Folder -- 0001493152-20-010402-xbrl      Zip    146K

‘EX-101.LAB’ — XBRL Labels — kblb-20200331_lab

This Exhibit is an XBRL XML File.

<?xml version="1.0" standalone="no" encoding="windows-1252"?>

<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" roleURI="http://www.xbrl.org/2009/role/negatedLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" roleURI="http://www.xbrl.org/2009/role/negatedNetLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel"/>

<link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" roleURI="http://www.xbrl.org/2009/role/netLabel"/>

<link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US"> Class of Stock [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonClassAMember" xlink:label="us-gaap_CommonClassAMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassAMember" xlink:to="us-gaap_CommonClassAMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonClassAMember_lbl" xml:lang="en-US"> Common Stock Class A [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassBMember" xlink:to="us-gaap_CommonClassBMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonClassBMember_lbl" xml:lang="en-US"> Common Stock Class B [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US"> Equity Components [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SeriesAPreferredStocksMember" xlink:label="KBLB_SeriesAPreferredStocksMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SeriesAPreferredStocksMember" xlink:to="KBLB_SeriesAPreferredStocksMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SeriesAPreferredStocksMember_lbl" xml:lang="en-US"> Preferred Stock - Series A [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonClassAStockMember" xlink:label="KBLB_CommonClassAStockMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonClassAStockMember" xlink:to="KBLB_CommonClassAStockMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonClassAStockMember_lbl" xml:lang="en-US"> Common Stock - Class A [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonClassBStockMember" xlink:label="KBLB_CommonClassBStockMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonClassBStockMember" xlink:to="KBLB_CommonClassBStockMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonClassBStockMember_lbl" xml:lang="en-US"> Common Stock - Class B [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockClassASharesToBeIssuedMember" xlink:label="KBLB_CommonStockClassASharesToBeIssuedMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockClassASharesToBeIssuedMember" xlink:to="KBLB_CommonStockClassASharesToBeIssuedMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockClassASharesToBeIssuedMember_lbl" xml:lang="en-US"> Common Stock - Class A Shares to Be Issued [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US"> Additional Paid-In Capital [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US"> Accumulated Deficit [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xml:lang="en-US"> Antidilutive Securities [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_StockWarrantsMember" xlink:label="KBLB_StockWarrantsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockWarrantsMember" xlink:to="KBLB_StockWarrantsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_StockWarrantsMember_lbl" xml:lang="en-US"> Stock Warrants [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="us-gaap_ConvertiblePreferredStockMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertiblePreferredStockMember" xlink:to="us-gaap_ConvertiblePreferredStockMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertiblePreferredStockMember_lbl" xml:lang="en-US"> Convertible Preferred Stock [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US"> Fair Value Hierarchy and NAV [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US"> Level 1 [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US"> Level 2 [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="us-gaap_FairValueInputsLevel3Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US"> Level 3 [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="us-gaap_ConcentrationRiskByTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByTypeAxis" xlink:to="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="us-gaap_CustomerConcentrationRiskMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerConcentrationRiskMember" xlink:to="us-gaap_CustomerConcentrationRiskMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CustomerConcentrationRiskMember_lbl" xml:lang="en-US"> Customer Concentration Risk [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MajorCustomersAxis" xlink:label="srt_MajorCustomersAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MajorCustomersAxis" xlink:to="srt_MajorCustomersAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MajorCustomersAxis_lbl" xml:lang="en-US"> Customer [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CustomerAMember" xlink:label="KBLB_CustomerAMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CustomerAMember" xlink:to="KBLB_CustomerAMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CustomerAMember_lbl" xml:lang="en-US"> Customer A [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AutomobilesMember" xlink:label="us-gaap_AutomobilesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AutomobilesMember" xlink:to="us-gaap_AutomobilesMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AutomobilesMember_lbl" xml:lang="en-US"> Automobile [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_LaboratoryEquipmentMember" xlink:label="KBLB_LaboratoryEquipmentMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LaboratoryEquipmentMember" xlink:to="KBLB_LaboratoryEquipmentMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_LaboratoryEquipmentMember_lbl" xml:lang="en-US"> Laboratory Equipment [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OfficeEquipmentMember" xlink:label="us-gaap_OfficeEquipmentMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OfficeEquipmentMember" xlink:to="us-gaap_OfficeEquipmentMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OfficeEquipmentMember_lbl" xml:lang="en-US"> Office Equipment [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="us-gaap_LeaseholdImprovementsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseholdImprovementsMember" xlink:to="us-gaap_LeaseholdImprovementsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xml:lang="en-US"> Leasehold Improvements [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="us-gaap_IncomeStatementLocationAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US"> Income Statement Location [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpenseMember" xlink:to="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US"> Research and Development Headquaters [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="srt_StatementGeographicalAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementGeographicalAxis_lbl" xml:lang="en-US"> Geographical [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SocialistRepublicOfVietnamMember" xlink:label="KBLB_SocialistRepublicOfVietnamMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SocialistRepublicOfVietnamMember" xlink:to="KBLB_SocialistRepublicOfVietnamMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SocialistRepublicOfVietnamMember_lbl" xml:lang="en-US"> Socialist Republic of Vietnam [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfArrangementAxis" xlink:label="us-gaap_TypeOfArrangementAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfArrangementAxis" xlink:to="us-gaap_TypeOfArrangementAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xml:lang="en-US"> Collaborative Arrangement and Arrangement Other than Collaborative [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseAssetsNetRelatedPartyMember" xlink:label="KBLB_RightToUseAssetsNetRelatedPartyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsNetRelatedPartyMember" xlink:to="KBLB_RightToUseAssetsNetRelatedPartyMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseAssetsNetRelatedPartyMember_lbl" xml:lang="en-US"> Right to Use Assets Net - Related Party [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseAssetsNetMember" xlink:label="KBLB_RightToUseAssetsNetMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsNetMember" xlink:to="KBLB_RightToUseAssetsNetMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseAssetsNetMember_lbl" xml:lang="en-US"> Right to Use Assets Net [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseAssetsNetOneMember" xlink:label="KBLB_RightToUseAssetsNetOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsNetOneMember" xlink:to="KBLB_RightToUseAssetsNetOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseAssetsNetOneMember_lbl" xml:lang="en-US"> Right to Use Assets Net One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseLiabilityNetRelatedPartyMember" xlink:label="KBLB_RightToUseLiabilityNetRelatedPartyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseLiabilityNetRelatedPartyMember" xlink:to="KBLB_RightToUseLiabilityNetRelatedPartyMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseLiabilityNetRelatedPartyMember_lbl" xml:lang="en-US"> Right to Use Liability Net - Related Party [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseLiabilityNetMember" xlink:label="KBLB_RightToUseLiabilityNetMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseLiabilityNetMember" xlink:to="KBLB_RightToUseLiabilityNetMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseLiabilityNetMember_lbl" xml:lang="en-US"> Right to Use Liability Net [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseLiabilityNetOneMember" xlink:label="KBLB_RightToUseLiabilityNetOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseLiabilityNetOneMember" xlink:to="KBLB_RightToUseLiabilityNetOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseLiabilityNetOneMember_lbl" xml:lang="en-US"> Right to Use Liability Net One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OperatingLeaseExpensesMember" xlink:label="KBLB_OperatingLeaseExpensesMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeaseExpensesMember" xlink:to="KBLB_OperatingLeaseExpensesMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OperatingLeaseExpensesMember_lbl" xml:lang="en-US"> Operating Lease Expenses [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OperatingLeaseExpensesOneMember" xlink:label="KBLB_OperatingLeaseExpensesOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeaseExpensesOneMember" xlink:to="KBLB_OperatingLeaseExpensesOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OperatingLeaseExpensesOneMember_lbl" xml:lang="en-US"> Operating Lease Expenses One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OperatingLeaseExpensesRelatedPartyMember" xlink:label="KBLB_OperatingLeaseExpensesRelatedPartyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeaseExpensesRelatedPartyMember" xlink:to="KBLB_OperatingLeaseExpensesRelatedPartyMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OperatingLeaseExpensesRelatedPartyMember_lbl" xml:lang="en-US"> Operating Lease Expenses - Related Party [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US"> Debt Instrument [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_UnsecuredPromissoryNoteMember" xlink:label="KBLB_UnsecuredPromissoryNoteMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_UnsecuredPromissoryNoteMember" xlink:to="KBLB_UnsecuredPromissoryNoteMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_UnsecuredPromissoryNoteMember_lbl" xml:lang="en-US"> Unsecured Promissory Note [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="srt_TitleOfIndividualAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualAxis" xlink:to="srt_TitleOfIndividualAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_TitleOfIndividualAxis_lbl" xml:lang="en-US"> Title of Individual [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_NotreDameMember" xlink:label="KBLB_NotreDameMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_NotreDameMember" xlink:to="KBLB_NotreDameMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_NotreDameMember_lbl" xml:lang="en-US"> Notre Dame [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementScenarioAxis_lbl" xml:lang="en-US"> Scenario [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_TwentyFourthMonthsMember" xlink:label="KBLB_TwentyFourthMonthsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_TwentyFourthMonthsMember" xlink:to="KBLB_TwentyFourthMonthsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_TwentyFourthMonthsMember_lbl" xml:lang="en-US"> 24th Month [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_PurchaseAgreementMember" xlink:label="KBLB_PurchaseAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PurchaseAgreementMember" xlink:to="KBLB_PurchaseAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_PurchaseAgreementMember_lbl" xml:lang="en-US"> Purchase Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestorMember" xlink:label="us-gaap_InvestorMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestorMember" xlink:to="us-gaap_InvestorMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestorMember_lbl" xml:lang="en-US"> Investor [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockAndWarrantsMember" xlink:label="KBLB_CommonStockAndWarrantsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockAndWarrantsMember" xlink:to="KBLB_CommonStockAndWarrantsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockAndWarrantsMember_lbl" xml:lang="en-US"> Common Stock and Warrants [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SixCentWarrantMember" xlink:label="KBLB_SixCentWarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SixCentWarrantMember" xlink:to="KBLB_SixCentWarrantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SixCentWarrantMember_lbl" xml:lang="en-US"> 6 Cent Warrants [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EightCentWarrantMember" xlink:label="KBLB_EightCentWarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EightCentWarrantMember" xlink:to="KBLB_EightCentWarrantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EightCentWarrantMember_lbl" xml:lang="en-US"> 8 Cent Warrants [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WarrantMember" xlink:label="us-gaap_WarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US"> Warrant [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantOneMember" xlink:label="KBLB_WarrantOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantOneMember" xlink:to="KBLB_WarrantOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantOneMember_lbl" xml:lang="en-US"> Warrant One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantTwoMember" xlink:label="KBLB_WarrantTwoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantTwoMember" xlink:to="KBLB_WarrantTwoMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantTwoMember_lbl" xml:lang="en-US"> Warrant Two [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantThreeMember" xlink:label="KBLB_WarrantThreeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantThreeMember" xlink:to="KBLB_WarrantThreeMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantThreeMember_lbl" xml:lang="en-US"> Warrant Three [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US"> Legal Entity [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_UniversityOfNotreDameMember" xlink:label="KBLB_UniversityOfNotreDameMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_UniversityOfNotreDameMember" xlink:to="KBLB_UniversityOfNotreDameMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_UniversityOfNotreDameMember_lbl" xml:lang="en-US"> University of Notre Dame [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsOneMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsOneMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsOneMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsTwoMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsTwoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsTwoMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsTwoMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsTwoMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Two [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsThreeMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsThreeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsThreeMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsThreeMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsThreeMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Three [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsFourMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsFourMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsFourMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsFourMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsFourMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Four [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsFiveMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsFiveMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsFiveMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsFiveMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsFiveMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Five [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsSixMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsSixMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsSixMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsSixMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsSixMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Six [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsSevenMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsSevenMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsSevenMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsSevenMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsSevenMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Seven [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsEightMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsEightMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsEightMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsEightMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsEightMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Eight [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsNineMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsNineMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsNineMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsNineMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsNineMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Nine [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsTenMember" xlink:label="KBLB_CommonStockWarrantsAndOptionsTenMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsTenMember" xlink:to="KBLB_CommonStockWarrantsAndOptionsTenMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsTenMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Ten [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantFourMember" xlink:label="KBLB_WarrantFourMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantFourMember" xlink:to="KBLB_WarrantFourMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantFourMember_lbl" xml:lang="en-US"> Warrant Four [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantFiveMember" xlink:label="KBLB_WarrantFiveMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantFiveMember" xlink:to="KBLB_WarrantFiveMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantFiveMember_lbl" xml:lang="en-US"> Warrant Five [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantSixMember" xlink:label="KBLB_WarrantSixMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSixMember" xlink:to="KBLB_WarrantSixMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantSixMember_lbl" xml:lang="en-US"> Warrant Six [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantSevenMember" xlink:label="KBLB_WarrantSevenMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSevenMember" xlink:to="KBLB_WarrantSevenMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantSevenMember_lbl" xml:lang="en-US"> Warrant Seven [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EmploymentAgreementMember" xlink:label="KBLB_EmploymentAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmploymentAgreementMember" xlink:to="KBLB_EmploymentAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EmploymentAgreementMember_lbl" xml:lang="en-US"> Employment Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ChiefExecutiveOfficerMember" xlink:label="srt_ChiefExecutiveOfficerMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ChiefExecutiveOfficerMember" xlink:to="srt_ChiefExecutiveOfficerMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ChiefExecutiveOfficerMember_lbl" xml:lang="en-US"> CEO [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EmployeeMember" xlink:label="KBLB_EmployeeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmployeeMember" xlink:to="KBLB_EmployeeMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EmployeeMember_lbl" xml:lang="en-US"> Employee [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MrJonathanRRiceMember" xlink:label="KBLB_MrJonathanRRiceMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrJonathanRRiceMember" xlink:to="KBLB_MrJonathanRRiceMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MrJonathanRRiceMember_lbl" xml:lang="en-US"> Mr. Jonathan R. Rice [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_JanuaryTwoThousandAndFifteenWarrantMember" xlink:label="KBLB_JanuaryTwoThousandAndFifteenWarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_JanuaryTwoThousandAndFifteenWarrantMember" xlink:to="KBLB_JanuaryTwoThousandAndFifteenWarrantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_JanuaryTwoThousandAndFifteenWarrantMember_lbl" xml:lang="en-US"> January 2015 Warrant [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MayTwoThousandAndFifteenWarrantMember" xlink:label="KBLB_MayTwoThousandAndFifteenWarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MayTwoThousandAndFifteenWarrantMember" xlink:to="KBLB_MayTwoThousandAndFifteenWarrantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MayTwoThousandAndFifteenWarrantMember_lbl" xml:lang="en-US"> May 2015 Warrant [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MrKennethLeMember" xlink:label="KBLB_MrKennethLeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrKennethLeMember" xlink:to="KBLB_MrKennethLeMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MrKennethLeMember_lbl" xml:lang="en-US"> Mr. Kenneth Le [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_LicenseAgreementMember" xlink:label="KBLB_LicenseAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseAgreementMember" xlink:to="KBLB_LicenseAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_LicenseAgreementMember_lbl" xml:lang="en-US"> License Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeAxis_lbl" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US"> Maximum [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RoyaltyAndResearchAgreementsMember" xlink:label="KBLB_RoyaltyAndResearchAgreementsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RoyaltyAndResearchAgreementsMember" xlink:to="KBLB_RoyaltyAndResearchAgreementsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RoyaltyAndResearchAgreementsMember_lbl" xml:lang="en-US"> Royalty and Research Agreements [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ConsultantMember" xlink:label="KBLB_ConsultantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ConsultantMember" xlink:to="KBLB_ConsultantMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ConsultantMember_lbl" xml:lang="en-US"> Consultant [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MrThompsonMember" xlink:label="KBLB_MrThompsonMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrThompsonMember" xlink:to="KBLB_MrThompsonMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MrThompsonMember_lbl" xml:lang="en-US"> Mr. Thompson [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ConsultingAgreementMember" xlink:label="KBLB_ConsultingAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ConsultingAgreementMember" xlink:to="KBLB_ConsultingAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ConsultingAgreementMember_lbl" xml:lang="en-US"> Consulting Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OperatingLeaseAgreementsMember" xlink:label="KBLB_OperatingLeaseAgreementsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeaseAgreementsMember" xlink:to="KBLB_OperatingLeaseAgreementsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OperatingLeaseAgreementsMember_lbl" xml:lang="en-US"> Operating Lease Agreements [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_PresidentMember" xlink:label="srt_PresidentMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_PresidentMember" xlink:to="srt_PresidentMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_PresidentMember_lbl" xml:lang="en-US"> President [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OfficeAndManufacturingSpaceMember" xlink:label="KBLB_OfficeAndManufacturingSpaceMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OfficeAndManufacturingSpaceMember" xlink:to="KBLB_OfficeAndManufacturingSpaceMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OfficeAndManufacturingSpaceMember_lbl" xml:lang="en-US"> Office and Manufacturing Space [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_IntellectualPropertyTransferAgreementMember" xlink:label="KBLB_IntellectualPropertyTransferAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_IntellectualPropertyTransferAgreementMember" xlink:to="KBLB_IntellectualPropertyTransferAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_IntellectualPropertyTransferAgreementMember_lbl" xml:lang="en-US"> Intellectual Property Transfer Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_StockholderMember" xlink:label="KBLB_StockholderMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockholderMember" xlink:to="KBLB_StockholderMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_StockholderMember_lbl" xml:lang="en-US"> Stockholder [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xml:lang="en-US"> Related Party [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RelatedPartyMember" xlink:label="KBLB_RelatedPartyMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RelatedPartyMember" xlink:to="KBLB_RelatedPartyMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RelatedPartyMember_lbl" xml:lang="en-US"> Related Party [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ChiefOperatingOfficerMember" xlink:label="srt_ChiefOperatingOfficerMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ChiefOperatingOfficerMember" xlink:to="srt_ChiefOperatingOfficerMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ChiefOperatingOfficerMember_lbl" xml:lang="en-US"> Chief Operating Officer [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_BoardOfDirectorsChairmanMember" xlink:label="srt_BoardOfDirectorsChairmanMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_BoardOfDirectorsChairmanMember" xlink:to="srt_BoardOfDirectorsChairmanMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_BoardOfDirectorsChairmanMember_lbl" xml:lang="en-US"> Directors [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OfficeEmployeeMember" xlink:label="KBLB_OfficeEmployeeMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OfficeEmployeeMember" xlink:to="KBLB_OfficeEmployeeMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OfficeEmployeeMember_lbl" xml:lang="en-US"> Office Employee [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ThreeThroughFiveYearsMember" xlink:label="KBLB_ThreeThroughFiveYearsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ThreeThroughFiveYearsMember" xlink:to="KBLB_ThreeThroughFiveYearsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ThreeThroughFiveYearsMember_lbl" xml:lang="en-US"> Three through Five Years [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_LoanOneMember" xlink:label="KBLB_LoanOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LoanOneMember" xlink:to="KBLB_LoanOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_LoanOneMember_lbl" xml:lang="en-US"> Loan One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_FirstSixMonthsMember" xlink:label="KBLB_FirstSixMonthsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_FirstSixMonthsMember" xlink:to="KBLB_FirstSixMonthsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_FirstSixMonthsMember_lbl" xml:lang="en-US"> First Six Months [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SevenAndEightMonthsMember" xlink:label="KBLB_SevenAndEightMonthsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SevenAndEightMonthsMember" xlink:to="KBLB_SevenAndEightMonthsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SevenAndEightMonthsMember_lbl" xml:lang="en-US"> Seven and Eight Months [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_NineThroughTwentyThreeMonthsMember" xlink:label="KBLB_NineThroughTwentyThreeMonthsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_NineThroughTwentyThreeMonthsMember" xlink:to="KBLB_NineThroughTwentyThreeMonthsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_NineThroughTwentyThreeMonthsMember_lbl" xml:lang="en-US"> Nine Through Twenty Three Months [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OneTimeBonusMember" xlink:label="KBLB_OneTimeBonusMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OneTimeBonusMember" xlink:to="KBLB_OneTimeBonusMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OneTimeBonusMember_lbl" xml:lang="en-US"> One-Time Bonus [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_NewEmploymentAgreementMember" xlink:label="KBLB_NewEmploymentAgreementMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_NewEmploymentAgreementMember" xlink:to="KBLB_NewEmploymentAgreementMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_NewEmploymentAgreementMember_lbl" xml:lang="en-US"> New Employment Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US"> Subsequent Event Type [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="us-gaap_SubsequentEventMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US"> Subsequent Event [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember" xlink:label="KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember" xlink:to="KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember_lbl" xml:lang="en-US"> Chief Executive Officer and Chief Operations Officer [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="us-gaap_SeriesAPreferredStockMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesAPreferredStockMember" xlink:to="us-gaap_SeriesAPreferredStockMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xml:lang="en-US"> Series A Preferred Stock [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionOneMember" xlink:label="KBLB_CommonStockWarrantsAndOptionOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionOneMember" xlink:to="KBLB_CommonStockWarrantsAndOptionOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_CommonStockWarrantsAndOptionOneMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionTwoMember" xlink:label="KBLB_CommonStockWarrantsAndOptionTwoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionTwoMember" xlink:to="KBLB_CommonStockWarrantsAndOptionTwoMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_CommonStockWarrantsAndOptionTwoMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options Two [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionMember" xlink:label="KBLB_CommonStockWarrantsAndOptionMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionMember" xlink:to="KBLB_CommonStockWarrantsAndOptionMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_CommonStockWarrantsAndOptionMember_lbl" xml:lang="en-US"> Common Stock Warrants and Options [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember" xlink:label="srt_ScenarioForecastMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioForecastMember" xlink:to="srt_ScenarioForecastMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ScenarioForecastMember_lbl" xml:lang="en-US"> Forecast [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_PrincipalStockHoldersMember" xlink:label="KBLB_PrincipalStockHoldersMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PrincipalStockHoldersMember" xlink:to="KBLB_PrincipalStockHoldersMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_PrincipalStockHoldersMember_lbl" xml:lang="en-US"> Principal Stockholder [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="srt_BoardOfDirectorsChairmanMember_2_lbl" xml:lang="en-US"> Board of Directors [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_StockOptionsMember" xlink:label="KBLB_StockOptionsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockOptionsMember" xlink:to="KBLB_StockOptionsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_StockOptionsMember_lbl" xml:lang="en-US"> Stock Options [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xml:lang="en-US"> Adjustments for New Accounting Pronouncements [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="us-gaap_AccountingStandardsUpdate201602Member"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingStandardsUpdate201602Member" xlink:to="us-gaap_AccountingStandardsUpdate201602Member_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingStandardsUpdate201602Member_lbl" xml:lang="en-US"> ASU 2016-02 [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassAMember" xlink:to="us-gaap_CommonClassAMember_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonClassAMember_2_lbl" xml:lang="en-US"> Class A Common Stock [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MrThompsonOneMember" xlink:label="KBLB_MrThompsonOneMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrThompsonOneMember" xlink:to="KBLB_MrThompsonOneMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MrThompsonOneMember_lbl" xml:lang="en-US"> Mr. Thompson One [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MrRiceMember" xlink:label="KBLB_MrRiceMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrRiceMember" xlink:to="KBLB_MrRiceMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_MrRiceMember_lbl" xml:lang="en-US"> Mr. Rice [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AnotherFiveYearsMember" xlink:label="KBLB_AnotherFiveYearsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AnotherFiveYearsMember" xlink:to="KBLB_AnotherFiveYearsMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AnotherFiveYearsMember_lbl" xml:lang="en-US"> Another 5 Years [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_PrincipalStockholderMember" xlink:label="KBLB_PrincipalStockholderMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PrincipalStockholderMember" xlink:to="KBLB_PrincipalStockholderMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_PrincipalStockholderMember_lbl" xml:lang="en-US"> Principal Stockholder [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US"> Plan Name [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EmployeeStockOptionPlanMember" xlink:label="KBLB_EmployeeStockOptionPlanMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmployeeStockOptionPlanMember" xlink:to="KBLB_EmployeeStockOptionPlanMember_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EmployeeStockOptionPlanMember_lbl" xml:lang="en-US"> Employee Stock Option Plan [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_DocumentEntityInformationAbstract" xlink:label="KBLB_DocumentEntityInformationAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_DocumentEntityInformationAbstract" xlink:to="KBLB_DocumentEntityInformationAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_DocumentEntityInformationAbstract_lbl" xml:lang="en-US"> Document Entity Information </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US"> Entity Registrant Name </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US"> Entity Central Index Key </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:label="dei_DocumentType"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentType_lbl" xml:lang="en-US"> Document Type </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US"> Amendment Flag </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US"> Entity Filer Category </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US"> Entity Small Business </link:label>

<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US"> Entity Emerging Growth Company </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US"> Statement [Table] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US"> Statement [Line Items] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US"> ASSETS </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="us-gaap_AssetsCurrentAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US"> Current Assets </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Cash" xlink:label="us-gaap_Cash"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Cash_lbl" xml:lang="en-US"> Cash </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="us-gaap_PrepaidExpenseCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseCurrent" xlink:to="us-gaap_PrepaidExpenseCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xml:lang="en-US"> Prepaid expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US"> Total Current Assets </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US"> Property and Equipment, net </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US"> Operating lease right-of-use asset, net </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="us-gaap_SecurityDeposit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecurityDeposit" xlink:to="us-gaap_SecurityDeposit_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecurityDeposit_lbl" xml:lang="en-US"> Security deposit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US"> Total Assets </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US"> LIABILITIES AND STOCKHOLDERS' DEFICIT </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US"> Current Liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_lbl" xml:lang="en-US"> Accounts payable and accrued expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" xlink:label="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" xlink:to="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_lbl" xml:lang="en-US"> Note payable - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedRoyaltiesCurrent" xlink:label="us-gaap_AccruedRoyaltiesCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedRoyaltiesCurrent" xlink:to="us-gaap_AccruedRoyaltiesCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedRoyaltiesCurrent_lbl" xml:lang="en-US"> Royalty agreement payable - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueToRelatedPartiesCurrent" xlink:label="us-gaap_DueToRelatedPartiesCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToRelatedPartiesCurrent" xlink:to="us-gaap_DueToRelatedPartiesCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToRelatedPartiesCurrent_lbl" xml:lang="en-US"> Accounts payable and accrued expenses - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xml:lang="en-US"> Operating lease liability, current </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansPayableCurrent" xlink:label="us-gaap_LoansPayableCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayableCurrent" xlink:to="us-gaap_LoansPayableCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansPayableCurrent_lbl" xml:lang="en-US"> Loan payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US"> Total Current Liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US"> Long Term Liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermLoansPayable" xlink:label="us-gaap_LongTermLoansPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermLoansPayable" xlink:to="us-gaap_LongTermLoansPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermLoansPayable_lbl" xml:lang="en-US"> Loan payable, net of current </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xml:lang="en-US"> Operating lease liability, net of current </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US"> Total Liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US"> Commitments and Contingencies </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US"> Stockholders' Deficit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US"> Preferred stock, value </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US"> Common stock, value </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockIssuable" xlink:label="KBLB_CommonStockIssuable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockIssuable" xlink:to="KBLB_CommonStockIssuable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockIssuable_lbl" xml:lang="en-US"> Common Stock Issuable, 1,122,311 and 1,122,311 shares, respectively </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US"> Additional paid-in capital </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US"> Accumulated Deficit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US"> Total Stockholders' Deficit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US"> Total Liabilities and Stockholders' Deficit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US"> Preferred stock, par value </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorizedUnlimited" xlink:label="us-gaap_PreferredStockSharesAuthorizedUnlimited"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorizedUnlimited" xlink:to="us-gaap_PreferredStockSharesAuthorizedUnlimited_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorizedUnlimited_lbl" xml:lang="en-US"> Preferred stock, shares authorized </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US"> Preferred stock, shares issued </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US"> Preferred stock, shares outstanding </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US"> Common stock, par value </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorizedUnlimited" xlink:label="us-gaap_CommonStockSharesAuthorizedUnlimited"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorizedUnlimited" xlink:to="us-gaap_CommonStockSharesAuthorizedUnlimited_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorizedUnlimited_lbl" xml:lang="en-US"> Common stock, shares authorized </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US"> Common stock, shares issued </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US"> Common stock, shares outstanding </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockIssuableShares" xlink:label="KBLB_CommonStockIssuableShares"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockIssuableShares" xlink:to="KBLB_CommonStockIssuableShares_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockIssuableShares_lbl" xml:lang="en-US"> Common stock issuable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US"> Income Statement [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xml:lang="en-US"> Revenue </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US"> Operating Expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US"> General and Administrative </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US"> Professional Fees </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OfficersCompensation" xlink:label="us-gaap_OfficersCompensation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OfficersCompensation" xlink:to="us-gaap_OfficersCompensation_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OfficersCompensation_lbl" xml:lang="en-US"> Officer's Salary </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RentRelatedParty" xlink:label="KBLB_RentRelatedParty"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RentRelatedParty" xlink:to="KBLB_RentRelatedParty_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RentRelatedParty_lbl" xml:lang="en-US"> Rent - Related Party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US"> Research and Development </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US"> Total Operating Expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US"> Loss from Operations </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US"> Other Income/(Expenses) </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:to="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US"> Gain on forgiveness of debt </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US"> Interest expense </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeOther" xlink:label="us-gaap_InterestIncomeOther"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeOther" xlink:to="us-gaap_InterestIncomeOther_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeOther_lbl" xml:lang="en-US"> Interest income </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US"> Total Other Income/(Expenses) </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xml:lang="en-US"> Net (Loss) before Provision for Income Taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US"> Provision for Income Taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US"> Net (Loss) </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAndDiluted" xlink:to="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xml:lang="en-US"> Net Income (Loss) Per Share - Basic and Diluted </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:to="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl" xml:lang="en-US"> Weighted average number of shares outstanding during the period - Basic and Diluted </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquity_2_lbl" xml:lang="en-US"> Beginning Balance </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="us-gaap_SharesOutstanding"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US"> Beginning Balance, shares </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US"> Warrants issued for services </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xml:lang="en-US"> Stock issued for services ($0.0299/Sh) </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:to="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xml:lang="en-US"> Stock issued for services ($0.0299/Sh), shares </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US"> Units issued for cash </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US"> Units issued for cash, shares </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SharesIssuedInExchangeForAccountsPayable" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharesIssuedInExchangeForAccountsPayable" xlink:to="KBLB_SharesIssuedInExchangeForAccountsPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayable_lbl" xml:lang="en-US"> Shares issued in exchange for accounts payable </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SharesIssuedInExchangeForAccountsPayableShares" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayableShares"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharesIssuedInExchangeForAccountsPayableShares" xlink:to="KBLB_SharesIssuedInExchangeForAccountsPayableShares_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayableShares_lbl" xml:lang="en-US"> Shares issued in exchange for accounts payable, shares </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_lbl" xml:lang="en-US"> Imputed interest - related party </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OptionsIssuedForServices" xlink:label="KBLB_OptionsIssuedForServices"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OptionsIssuedForServices" xlink:to="KBLB_OptionsIssuedForServices_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OptionsIssuedForServices_lbl" xml:lang="en-US"> Options issued for services </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock" xlink:to="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock_lbl" xml:lang="en-US"> Exercise of 9,000,000 warrants in exchange for stock </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares" xlink:to="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares_lbl" xml:lang="en-US"> Exercise of 9,000,000 warrants in exchange for stock, shares </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CancellationOfWarrantsIssuedForServices" xlink:label="KBLB_CancellationOfWarrantsIssuedForServices"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CancellationOfWarrantsIssuedForServices" xlink:to="KBLB_CancellationOfWarrantsIssuedForServices_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CancellationOfWarrantsIssuedForServices_lbl" xml:lang="en-US"> Cancellation of warrants issued for services </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_2_lbl" xml:lang="en-US"> Net loss </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquity_3_lbl" xml:lang="en-US"> Ending Balance </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesOutstanding_2_lbl" xml:lang="en-US"> Ending Balance, shares </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ExerciseOfWarrants" xlink:label="KBLB_ExerciseOfWarrants"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ExerciseOfWarrants" xlink:to="KBLB_ExerciseOfWarrants_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ExerciseOfWarrants_lbl" xml:lang="en-US"> Exercise of warrants </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US"> Share price </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Cash Flows From Operating Activities: </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLoss_3_lbl" xml:lang="en-US"> Net Loss </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Adjustments to reconcile net loss to net cash used in operations </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Depreciation_lbl" xml:lang="en-US"> Depreciation expense </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_2_lbl" xml:lang="en-US"> Gain on forgiveness of debt </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ImputedInterestRelatedParty" xlink:label="KBLB_ImputedInterestRelatedParty"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ImputedInterestRelatedParty" xlink:to="KBLB_ImputedInterestRelatedParty_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="KBLB_ImputedInterestRelatedParty_lbl" xml:lang="en-US"> Imputed interest - related party </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_FairValueOfOptionsIssuedForServices" xlink:label="KBLB_FairValueOfOptionsIssuedForServices"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_FairValueOfOptionsIssuedForServices" xlink:to="KBLB_FairValueOfOptionsIssuedForServices_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_FairValueOfOptionsIssuedForServices_lbl" xml:lang="en-US"> Fair value of options issued for services </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantsIssuedcancelledToConsultants" xlink:label="KBLB_WarrantsIssuedcancelledToConsultants"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsIssuedcancelledToConsultants" xlink:to="KBLB_WarrantsIssuedcancelledToConsultants_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="KBLB_WarrantsIssuedcancelledToConsultants_lbl" xml:lang="en-US"> Warrants issued/(cancelled) to consultants </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US"> Changes in operating assets and liabilities: </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US"> Decrease (Increase) in prepaid expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US"> (Increase) in accounts receivables, net </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets" xlink:label="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets" xlink:to="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets_lbl" xml:lang="en-US"> Operating lease right-of-use, net </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent" xlink:to="us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDueToRelatedPartiesCurrent_lbl" xml:lang="en-US"> Increase in accrued expenses and other payables - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableTrade_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade_lbl" xml:lang="en-US"> (Decrease) Increase in accounts payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOperatingLiabilities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilities_lbl" xml:lang="en-US"> Operating lease liabilities, current </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US"> Net Cash Used In Operating Activities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US"> Cash Flows From Investing Activities: </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US"> Purchase of Fixed Assets and Leasehold Improvements and Domain Name </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US"> Net Cash Used In Investing Activities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US"> Cash Flows From Financing Activities: </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromNotesPayable" xlink:label="us-gaap_ProceedsFromNotesPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromNotesPayable" xlink:to="us-gaap_ProceedsFromNotesPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xml:lang="en-US"> Proceeds from Notes Payable - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="us-gaap_RepaymentsOfDebt"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xml:lang="en-US"> Principal payments on debt </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US"> Proceeds from issuance of common stock </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US"> Net Cash Provided by Financing Activities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xml:lang="en-US"> Net Increase in Cash </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xml:lang="en-US"> Cash at Beginning of Period </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_2_lbl" xml:lang="en-US"> Cash at End of Period </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US"> Supplemental disclosure of cash flow information: </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="us-gaap_InterestPaidNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US"> Cash paid for interest </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="us-gaap_IncomeTaxesPaidNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xml:lang="en-US"> Cash paid for taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:to="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xml:lang="en-US"> Supplemental disclosure of non-cash investing and financing activities: </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssued1" xlink:label="us-gaap_StockIssued1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssued1" xlink:to="us-gaap_StockIssued1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssued1_lbl" xml:lang="en-US"> Shares issued in connection with cashless warrants exercise </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SettlementOfAccountsPayableWithNotePayable" xlink:label="KBLB_SettlementOfAccountsPayableWithNotePayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SettlementOfAccountsPayableWithNotePayable" xlink:to="KBLB_SettlementOfAccountsPayableWithNotePayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SettlementOfAccountsPayableWithNotePayable_lbl" xml:lang="en-US"> Settlement of accounts payable with note payable </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SettlementOfAccountsPayableWithStockIssuance" xlink:label="KBLB_SettlementOfAccountsPayableWithStockIssuance"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SettlementOfAccountsPayableWithStockIssuance" xlink:to="KBLB_SettlementOfAccountsPayableWithStockIssuance_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SettlementOfAccountsPayableWithStockIssuance_lbl" xml:lang="en-US"> Settlement of accounts payable with stock issuance </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AdoptionOfLeaseStandard" xlink:label="KBLB_AdoptionOfLeaseStandard"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AdoptionOfLeaseStandard" xlink:to="KBLB_AdoptionOfLeaseStandard_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AdoptionOfLeaseStandard_lbl" xml:lang="en-US"> Adoption of lease standard ASC 842 </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US"> Summary of Significant Accounting Policies and Organization </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubstantialDoubtAboutGoingConcernTextBlock" xlink:label="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock" xlink:to="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock_lbl" xml:lang="en-US"> Going Concern </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xml:lang="en-US"> Equipment </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseAssetsAndLeaseLiabilitityAbstract" xlink:label="KBLB_RightToUseAssetsAndLeaseLiabilitityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsAndLeaseLiabilitityAbstract" xlink:to="KBLB_RightToUseAssetsAndLeaseLiabilitityAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseAssetsAndLeaseLiabilitityAbstract_lbl" xml:lang="en-US"> Right To Use Assets And Lease Liability </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock" xlink:label="KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock" xlink:to="KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock_lbl" xml:lang="en-US"> Right to Use Assets and Lease Liability </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AccruedInterestRelatedPartyAbstract" xlink:label="KBLB_AccruedInterestRelatedPartyAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AccruedInterestRelatedPartyAbstract" xlink:to="KBLB_AccruedInterestRelatedPartyAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AccruedInterestRelatedPartyAbstract_lbl" xml:lang="en-US"> Accrued Interest - Related Party </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AccruedInterestRelatedPartyTextBlock" xlink:label="KBLB_AccruedInterestRelatedPartyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AccruedInterestRelatedPartyTextBlock" xlink:to="KBLB_AccruedInterestRelatedPartyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_AccruedInterestRelatedPartyTextBlock_lbl" xml:lang="en-US"> Accrued Interest - Related Party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="us-gaap_DebtDisclosureAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="us-gaap_DebtDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US"> Note Payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityAbstract" xlink:label="us-gaap_EquityAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_EquityAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityAbstract_lbl" xml:lang="en-US"> Equity [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US"> Stockholders' Deficit </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US"> Commitments and Contingencies </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="us-gaap_RelatedPartyTransactionsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsAbstract" xlink:to="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xml:lang="en-US"> Related Party Transactions [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>

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

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US"> Related Party Transactions </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US"> Subsequent Events [Abstract] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US"> Subsequent Events </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_BasisOfPresentationPolicyTextBlock" xlink:label="KBLB_BasisOfPresentationPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_BasisOfPresentationPolicyTextBlock" xlink:to="KBLB_BasisOfPresentationPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_BasisOfPresentationPolicyTextBlock_lbl" xml:lang="en-US"> Basis of Presentation </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OrganizationPolicyTextBlock" xlink:label="KBLB_OrganizationPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OrganizationPolicyTextBlock" xlink:to="KBLB_OrganizationPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OrganizationPolicyTextBlock_lbl" xml:lang="en-US"> Organization </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:to="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xml:lang="en-US"> Foreign Currency </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US"> Use of Estimates </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US"> Cash </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US"> Loss Per Share </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:to="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xml:lang="en-US"> Research and Development Costs </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US"> Income Taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US"> Stock-Based Compensation </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xml:lang="en-US"> Recent Accounting Pronouncements </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US"> Equipment </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US"> Fair Value of Financial Instruments </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US"> Revenue Recognition </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="us-gaap_ConcentrationRiskCreditRisk"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskCreditRisk" xlink:to="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xml:lang="en-US"> Concentration of Credit Risk </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:to="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xml:lang="en-US"> Schedule of Antidilutive Securities of Earnings Per Share </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xml:lang="en-US"> Schedule of Deferred Tax Assets and Liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:to="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xml:lang="en-US"> Schedule of Components of Deferred Income Taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xml:lang="en-US"> Schedule of Fair Value of Financial Instruments </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueConcentrationOfRiskTextBlock" xlink:label="us-gaap_FairValueConcentrationOfRiskTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueConcentrationOfRiskTextBlock" xlink:to="us-gaap_FairValueConcentrationOfRiskTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueConcentrationOfRiskTextBlock_lbl" xml:lang="en-US"> Schedule of Concentration of Credit Risk </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xml:lang="en-US"> Schedule of Property and Equipment </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ScheduleOfRightUseOfAssetsTableTextBlock" xlink:label="KBLB_ScheduleOfRightUseOfAssetsTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ScheduleOfRightUseOfAssetsTableTextBlock" xlink:to="KBLB_ScheduleOfRightUseOfAssetsTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ScheduleOfRightUseOfAssetsTableTextBlock_lbl" xml:lang="en-US"> Schedule of Right Use of Assets </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ScheduleOfLeaseLiabilityTableTextBlock" xlink:label="KBLB_ScheduleOfLeaseLiabilityTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ScheduleOfLeaseLiabilityTableTextBlock" xlink:to="KBLB_ScheduleOfLeaseLiabilityTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ScheduleOfLeaseLiabilityTableTextBlock_lbl" xml:lang="en-US"> Schedule of Lease Liability </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="us-gaap_LeaseCostTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostTableTextBlock" xlink:to="us-gaap_LeaseCostTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xml:lang="en-US"> Schedule of Lease Cost </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US"> Schedule of Option Assumption </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ScheduleOfWarrantsActivityTableTextBlock" xlink:label="KBLB_ScheduleOfWarrantsActivityTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ScheduleOfWarrantsActivityTableTextBlock" xlink:to="KBLB_ScheduleOfWarrantsActivityTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ScheduleOfWarrantsActivityTableTextBlock_lbl" xml:lang="en-US"> Schedule of Warrants Activity </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ScheduleOfWarrantsOutstandingTableTextBlock" xlink:label="KBLB_ScheduleOfWarrantsOutstandingTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ScheduleOfWarrantsOutstandingTableTextBlock" xlink:to="KBLB_ScheduleOfWarrantsOutstandingTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ScheduleOfWarrantsOutstandingTableTextBlock_lbl" xml:lang="en-US"> Schedule of Warrants Outstanding </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ScheduleOfOptionsOutstandingTableTextBlock" xlink:label="KBLB_ScheduleOfOptionsOutstandingTableTextBlock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ScheduleOfOptionsOutstandingTableTextBlock" xlink:to="KBLB_ScheduleOfOptionsOutstandingTableTextBlock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ScheduleOfOptionsOutstandingTableTextBlock_lbl" xml:lang="en-US"> Schedule of Options Outstanding </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashEquivalentsAtCarryingValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashEquivalentsAtCarryingValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashEquivalentsAtCarryingValue_lbl" xml:lang="en-US"> Cash equivalents </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US"> Income tax rate, percentage </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:label="us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:to="us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_lbl" xml:lang="en-US"> Income tax, uncertain tax positions </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges" xlink:label="us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges" xlink:to="us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_lbl" xml:lang="en-US"> Impairment losses on equipment </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AdditionalContractAward" xlink:label="KBLB_AdditionalContractAward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AdditionalContractAward" xlink:to="KBLB_AdditionalContractAward_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AdditionalContractAward_lbl" xml:lang="en-US"> Additional contract award </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ContractAward" xlink:label="KBLB_ContractAward"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ContractAward" xlink:to="KBLB_ContractAward_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ContractAward_lbl" xml:lang="en-US"> Contract award </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashUninsuredAmount" xlink:label="us-gaap_CashUninsuredAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashUninsuredAmount" xlink:to="us-gaap_CashUninsuredAmount_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US"> Cash excess of FDIC insurance limits </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US"> Doubtful accounts </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:to="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xml:lang="en-US"> Valuation allowance increase decrease </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2_lbl" xml:lang="en-US"> Government contract revenue </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US"> Antidilutive Securities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US"> Warrants exercise price </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Option exercise price </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US"> Expected income tax recovery (expense) at the statutory rate of 21% </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl" xml:lang="en-US"> Tax effect of expenses that are not deductible for income tax purposes (net of other amounts deductible for tax purposes) </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US"> Change in valuation allowance </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_2_lbl" xml:lang="en-US"> Provision for income taxes </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xml:lang="en-US"> Income tax rate </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xml:lang="en-US"> Net Operating Loss Carryforward </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US"> Valuation allowance </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="us-gaap_DeferredTaxAssetsNet"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsNet" xlink:to="us-gaap_DeferredTaxAssetsNet_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xml:lang="en-US"> Net deferred tax asset </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="us-gaap_DeferredTaxLiabilities"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilities_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xml:lang="en-US"> Net deferred tax liability </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueNetAssetLiability" xlink:label="us-gaap_FairValueNetAssetLiability"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueNetAssetLiability" xlink:to="us-gaap_FairValueNetAssetLiability_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xml:lang="en-US"> Fair value of assets and liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="us-gaap_ConcentrationRiskPercentage1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskPercentage1" xlink:to="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xml:lang="en-US"> Concentration risk </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3_lbl" xml:lang="en-US"> Sales </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WorkingCapital" xlink:label="KBLB_WorkingCapital"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WorkingCapital" xlink:to="KBLB_WorkingCapital_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WorkingCapital_lbl" xml:lang="en-US"> Working capital </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_4_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_4_lbl" xml:lang="en-US"> Stockholders' deficiency </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_2_lbl" xml:lang="en-US"> Cash used in operating activities </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_2_lbl" xml:lang="en-US"> Long-Lived Tangible Asset [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US"> Property and Equipment, gross </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US"> Less: Accumulated Depreciation </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_2_lbl" xml:lang="en-US"> Total Property and Equipment, net </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_2_lbl" xml:lang="en-US"> Accounting Standards Update [Axis] </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRent" xlink:label="us-gaap_PaymentsForRent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRent" xlink:to="us-gaap_PaymentsForRent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRent_lbl" xml:lang="en-US"> Rent payments </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:to="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseRenewalTerm_lbl" xml:lang="en-US"> Lease term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US"> Annual rent, year one </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US"> Annual rent, year two </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AreaOfLand" xlink:label="us-gaap_AreaOfLand"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AreaOfLand" xlink:to="us-gaap_AreaOfLand_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AreaOfLand_lbl" xml:lang="en-US"> Area of land </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RentIncreasePercentage" xlink:label="KBLB_RentIncreasePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RentIncreasePercentage" xlink:to="KBLB_RentIncreasePercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RentIncreasePercentage_lbl" xml:lang="en-US"> Rent increase percentage </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_2_lbl" xml:lang="en-US"> Right of use assets </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_2_lbl" xml:lang="en-US"> Lease liabilities </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseDiscountRate" xlink:label="us-gaap_LesseeOperatingLeaseDiscountRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseDiscountRate" xlink:to="us-gaap_LesseeOperatingLeaseDiscountRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseDiscountRate_lbl" xml:lang="en-US"> Lease percentage </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US"> Lease present value </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseExpense" xlink:label="us-gaap_OperatingLeaseExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseExpense" xlink:to="us-gaap_OperatingLeaseExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xml:lang="en-US"> Lease expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseExpirationDate1" xlink:label="us-gaap_LeaseExpirationDate1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseExpirationDate1" xlink:to="us-gaap_LeaseExpirationDate1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xml:lang="en-US"> Lease expiration </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="us-gaap_OperatingLeasePayments"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasePayments_lbl" xml:lang="en-US"> Lease payments </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US"> Total </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_3_lbl" xml:lang="en-US"> Less: short term portion </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_2_lbl" xml:lang="en-US"> Long term position </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCost" xlink:label="us-gaap_LeaseCost"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LeaseCost_lbl" xml:lang="en-US"> Lease expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xml:lang="en-US"> Proceeds from debt </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US"> Debt Instrument, Interest rate </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_2_lbl" xml:lang="en-US"> Loans payable amount </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaidInKindInterest" xlink:label="us-gaap_PaidInKindInterest"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaidInKindInterest" xlink:to="us-gaap_PaidInKindInterest_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaidInKindInterest_lbl" xml:lang="en-US"> In-kind contribution of interest </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accrued interest </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_2_lbl" xml:lang="en-US"> Proceeds from Debt </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayable" xlink:label="us-gaap_NotesPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US"> Notes payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="us-gaap_DebtInstrumentTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTerm" xlink:to="us-gaap_DebtInstrumentTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xml:lang="en-US"> Debt instrument, term </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfDebt" xlink:to="us-gaap_RepaymentsOfDebt_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfDebt_2_lbl" xml:lang="en-US"> Repayment of debt </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_2_lbl" xml:lang="en-US"> Number of shares issued </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US"> Warrants to purchase up share </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantExpirationDate" xlink:label="KBLB_WarrantExpirationDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantExpirationDate" xlink:to="KBLB_WarrantExpirationDate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantExpirationDate_lbl" xml:lang="en-US"> Warrant expiration date </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_2_lbl" xml:lang="en-US"> Number of shares issued, value </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accounts payable </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OptionTerm" xlink:label="KBLB_OptionTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OptionTerm" xlink:to="KBLB_OptionTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OptionTerm_lbl" xml:lang="en-US"> Option term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_lbl" xml:lang="en-US"> Fair value of options </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CommonStockWarrantsAndOptionsDescription" xlink:label="KBLB_CommonStockWarrantsAndOptionsDescription"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockWarrantsAndOptionsDescription" xlink:to="KBLB_CommonStockWarrantsAndOptionsDescription_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionsDescription_lbl" xml:lang="en-US"> Common stock warrants and options, description </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US"> Share based compensation </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantsExpenses" xlink:label="KBLB_WarrantsExpenses"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsExpenses" xlink:to="KBLB_WarrantsExpenses_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantsExpenses_lbl" xml:lang="en-US"> Warrants expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_lbl" xml:lang="en-US"> Number of warrants cancelled </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingTerm" xlink:to="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xml:lang="en-US"> Warrants term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="us-gaap_FairValueAdjustmentOfWarrants"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAdjustmentOfWarrants" xlink:to="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xml:lang="en-US"> Fair value of adjustments of warrants </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantsCancelledAmount" xlink:label="KBLB_WarrantsCancelledAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsCancelledAmount" xlink:to="KBLB_WarrantsCancelledAmount_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantsCancelledAmount_lbl" xml:lang="en-US"> Warrants cancelled amount </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProfessionalFees_2_lbl" xml:lang="en-US"> Consulting fees </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US"> Expected dividends </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US"> Expected volatility </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US"> Expected term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US"> Risk free interest rate </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeituresdRate" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeituresdRate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeituresdRate" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeituresdRate_lbl" xlink:type="arc"/>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xml:lang="en-US"> Number of Warrants, Beginning balance </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xml:lang="en-US"> Number of Warrants, Granted </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_lbl" xml:lang="en-US"> Number of Warrants, Exercised </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_2_lbl" xml:lang="en-US"> Number of Warrants, Cancelled/Forfeited </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_2_lbl" xml:lang="en-US"> Number of Warrants, Ending balance </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue_lbl" xml:lang="en-US"> Number of Warrants, Intrinsic Value </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Beginning balance </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Granted </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Exercised </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Cancelled/Forfeited </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_2_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Ending balance </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_lbl" xml:lang="en-US"> Weighted Average Exercise Price, Intrinsic Value </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:to="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Beginning balance </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2" xlink:to="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Granted </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:to="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm_lbl" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Ending balance </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2_lbl" xml:lang="en-US"> Exercise Price Warrants Outstanding </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2_2_lbl" xml:lang="en-US"> Weighted Average Remaining Contractual Life </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue_2_lbl" xlink:type="arc"/>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice_lbl" xml:lang="en-US"> Exercise Price </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:type="arc"/>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:type="arc"/>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xml:lang="en-US"> Weighted Average Remaining Contractual Life </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AgreementTerm" xlink:label="KBLB_AgreementTerm"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AgreementTerm" xlink:to="KBLB_AgreementTerm_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AgreementTerm_lbl" xml:lang="en-US"> Agreement term </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OfficersCompensation" xlink:to="us-gaap_OfficersCompensation_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OfficersCompensation_2_lbl" xml:lang="en-US"> Annual salary </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AnnualSalaryRateIncreasePercentage" xlink:label="KBLB_AnnualSalaryRateIncreasePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AnnualSalaryRateIncreasePercentage" xlink:to="KBLB_AnnualSalaryRateIncreasePercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AnnualSalaryRateIncreasePercentage_lbl" xml:lang="en-US"> Annual salary rate, increase </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EmployeeBonusRatePercentage" xlink:label="KBLB_EmployeeBonusRatePercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmployeeBonusRatePercentage" xlink:to="KBLB_EmployeeBonusRatePercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EmployeeBonusRatePercentage_lbl" xml:lang="en-US"> Employee bonus rate </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedSalariesCurrentAndNoncurrent" xlink:label="us-gaap_AccruedSalariesCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedSalariesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accrued salary balance </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalariesWagesAndOfficersCompensation" xlink:label="us-gaap_SalariesWagesAndOfficersCompensation"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalariesWagesAndOfficersCompensation" xlink:to="us-gaap_SalariesWagesAndOfficersCompensation_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SalariesWagesAndOfficersCompensation_lbl" xml:lang="en-US"> Annual cash compensation </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_EducationalExpenses" xlink:label="KBLB_EducationalExpenses"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EducationalExpenses" xlink:to="KBLB_EducationalExpenses_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_EducationalExpenses_lbl" xml:lang="en-US"> Educational expenses </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_2_lbl" xml:lang="en-US"> Warrant term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xml:lang="en-US"> Warrant to purchase shares </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3_lbl" xml:lang="en-US"> Warrant exercise price </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantSharesFullyVested" xlink:label="KBLB_WarrantSharesFullyVested"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSharesFullyVested" xlink:to="KBLB_WarrantSharesFullyVested_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantSharesFullyVested_lbl" xml:lang="en-US"> Warrant shares fully vested </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue" xlink:label="KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue" xlink:to="KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue_lbl" xml:lang="en-US"> Warrants issued value </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ExtendedExpirationDateDescription" xlink:label="KBLB_ExtendedExpirationDateDescription"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ExtendedExpirationDateDescription" xlink:to="KBLB_ExtendedExpirationDateDescription_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ExtendedExpirationDateDescription_lbl" xml:lang="en-US"> Extended expiration date description </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:to="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xml:lang="en-US"> Ownership percentage </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Payroll payable </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_LicenseFee" xlink:label="KBLB_LicenseFee"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseFee" xlink:to="KBLB_LicenseFee_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_LicenseFee_lbl" xml:lang="en-US"> License fee </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_LicenseMaintenanceFee" xlink:label="KBLB_LicenseMaintenanceFee"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseMaintenanceFee" xlink:to="KBLB_LicenseMaintenanceFee_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_LicenseMaintenanceFee_lbl" xml:lang="en-US"> License maintenance fee </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AnnualResearchFee" xlink:label="KBLB_AnnualResearchFee"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AnnualResearchFee" xlink:to="KBLB_AnnualResearchFee_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AnnualResearchFee_lbl" xml:lang="en-US"> Annual research fee </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_RoyaltyPercentage" xlink:label="KBLB_RoyaltyPercentage"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RoyaltyPercentage" xlink:to="KBLB_RoyaltyPercentage_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_RoyaltyPercentage_lbl" xml:lang="en-US"> Royalty percentage </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_TerminationAgreementDescription" xlink:label="KBLB_TerminationAgreementDescription"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_TerminationAgreementDescription" xlink:to="KBLB_TerminationAgreementDescription_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_TerminationAgreementDescription_lbl" xml:lang="en-US"> Termination agreement description </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfDebt" xlink:to="us-gaap_RepaymentsOfDebt_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RepaymentsOfDebt_3_lbl" xml:lang="en-US"> Payment for debt </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_3_lbl" xml:lang="en-US"> Stock issued during period, value </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfessionalFees_3_lbl" xml:lang="en-US"> Consulting fee </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="us-gaap_SharesIssuedPricePerShare"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xml:lang="en-US"> Shares issued, price per share </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_GainOnSettlementOfAccountsPayable" xlink:label="KBLB_GainOnSettlementOfAccountsPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_GainOnSettlementOfAccountsPayable" xlink:to="KBLB_GainOnSettlementOfAccountsPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_GainOnSettlementOfAccountsPayable_lbl" xml:lang="en-US"> Gain on settlement of accounts payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US"> Maturity date </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US"> Outstanding balance </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_2_lbl" xml:lang="en-US"> Interest expensed and related accrued interest payable </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_2_lbl" xml:lang="en-US"> Fair value of warrants </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable" xlink:to="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xml:lang="en-US"> Warrants exercisable date </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_WarrantsExercisableDescription" xlink:label="KBLB_WarrantsExercisableDescription"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsExercisableDescription" xlink:to="KBLB_WarrantsExercisableDescription_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantsExercisableDescription_lbl" xml:lang="en-US"> Warrants exercisable description </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_CancelledWarrantIssued" xlink:label="KBLB_CancelledWarrantIssued"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CancelledWarrantIssued" xlink:to="KBLB_CancelledWarrantIssued_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CancelledWarrantIssued_lbl" xml:lang="en-US"> Cancelled warrant issued </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRent" xlink:to="us-gaap_PaymentsForRent_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PaymentsForRent_2_lbl" xml:lang="en-US"> Payments for rent </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseTermOfContract" xlink:to="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xml:lang="en-US"> Operating lease, term </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseDescription" xlink:label="us-gaap_LesseeOperatingLeaseDescription"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseDescription" xlink:to="us-gaap_LesseeOperatingLeaseDescription_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseDescription_lbl" xml:lang="en-US"> Operating lease, description </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OperatingLeasesRentExpense" xlink:label="KBLB_OperatingLeasesRentExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeasesRentExpense" xlink:to="KBLB_OperatingLeasesRentExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_OperatingLeasesRentExpense_lbl" xml:lang="en-US"> Operating leases, rent expense </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingMaturityDate" xlink:label="us-gaap_WarrantsAndRightsOutstandingMaturityDate"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingMaturityDate" xlink:to="us-gaap_WarrantsAndRightsOutstandingMaturityDate_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstandingMaturityDate_lbl" xml:lang="en-US"> Warrants expiration date </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="us-gaap_DividendsPreferredStock"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US"> Dividends, preferred stock </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockVotingRights" xlink:label="us-gaap_PreferredStockVotingRights"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockVotingRights" xlink:to="us-gaap_PreferredStockVotingRights_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockVotingRights_lbl" xml:lang="en-US"> Preferred stock voting rights </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="us-gaap_DebtInstrumentFairValue"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US"> Fair value of the payment </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_2_lbl" xml:lang="en-US"> Accrued interest percentage </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_3_lbl" xml:lang="en-US"> Interest expense and related accrued interest payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromLoans" xlink:label="us-gaap_ProceedsFromLoans"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromLoans" xlink:to="us-gaap_ProceedsFromLoans_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromLoans_lbl" xml:lang="en-US"> Loan received </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansPayable" xlink:label="us-gaap_LoansPayable"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayable" xlink:to="us-gaap_LoansPayable_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansPayable_lbl" xml:lang="en-US"> Loans payable </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="us-gaap_LeaseAndRentalExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xml:lang="en-US"> Operating leases, rent expense </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accounts payable and accrued expenses </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="us-gaap_DueToRelatedPartiesCurrentAndNoncurrent"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:to="us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Loan interest - related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RoyaltyExpense" xlink:label="us-gaap_RoyaltyExpense"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RoyaltyExpense" xlink:to="us-gaap_RoyaltyExpense_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RoyaltyExpense_lbl" xml:lang="en-US"> Royalty payable to related party </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties" xlink:label="us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties" xlink:to="us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromCollectionOfLongtermLoansToRelatedParties_lbl" xml:lang="en-US"> Advances received from loan </link:label>

<link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" xlink:to="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xml:lang="en-US"> Share-based compensation, option </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AccruedInterestRelatedPartyTextBlock_doc" xml:lang="en-US"> Accrued interest - related party [Text Block] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AdditionalContractAward" xlink:to="KBLB_AdditionalContractAward_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AdditionalContractAward_doc" xml:lang="en-US"> Additional contract award. </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_AdditionalWarrantsMember" xlink:label="KBLB_AdditionalWarrantsMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AdditionalWarrantsMember" xlink:to="KBLB_AdditionalWarrantsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AdditionalWarrantsMember_doc" xml:lang="en-US"> Additional Warrants [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AdoptionOfLeaseStandard" xlink:to="KBLB_AdoptionOfLeaseStandard_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AdoptionOfLeaseStandard_doc" xml:lang="en-US"> Adoption of lease standard ASC 842. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AgreementTerm" xlink:to="KBLB_AgreementTerm_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AgreementTerm_doc" xml:lang="en-US"> Agreement term. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AnnualResearchFee" xlink:to="KBLB_AnnualResearchFee_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AnnualResearchFee_doc" xml:lang="en-US"> Annual research fee. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AnnualSalaryRateIncreasePercentage_doc" xml:lang="en-US"> Annual salary rate, increase percentage. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CancelledWarrantIssued" xlink:to="KBLB_CancelledWarrantIssued_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CancelledWarrantIssued_doc" xml:lang="en-US"> Cancelled warrant issued. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ChiefExecutiveOfficerAndChiefOperationsOfficerMember_doc" xml:lang="en-US"> Chief Executive Officer and Chief Operations Officer [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsValue_doc" xml:lang="en-US"> Warrants issued value. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonClassAStockMember" xlink:to="KBLB_CommonClassAStockMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonClassAStockMember_doc" xml:lang="en-US"> Common Stock - Class A [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonClassBStockMember" xlink:to="KBLB_CommonClassBStockMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonClassBStockMember_doc" xml:lang="en-US"> Common Stock - Class B [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockAndWarrantsMember_doc" xml:lang="en-US"> Common Stock and Warrants [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockClassASharesToBeIssuedMember_doc" xml:lang="en-US"> Common Stock - Class A Shares To Be Issued [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockIssuable" xlink:to="KBLB_CommonStockIssuable_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockIssuable_doc" xml:lang="en-US"> Common Stock Issuable. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CommonStockIssuableShares" xlink:to="KBLB_CommonStockIssuableShares_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockIssuableShares_doc" xml:lang="en-US"> Common stock issuable. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsDescription_doc" xml:lang="en-US"> Common stock warrants and options, description. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsEightMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Eight [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsFiveMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Five [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsFourMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Four [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsMember_doc" xml:lang="en-US"> Common Stock Warrants and Options [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsNineMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Nine [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsOneMember_doc" xml:lang="en-US"> Common Stock Warrants and Options One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsSevenMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Seven [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsSixMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Six [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsTenMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Ten [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsThreeMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Three [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionsTwoMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Two [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ConsultantMember" xlink:to="KBLB_ConsultantMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ConsultantMember_doc" xml:lang="en-US"> Consultant [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ConsultingAgreementMember" xlink:to="KBLB_ConsultingAgreementMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ConsultingAgreementMember_doc" xml:lang="en-US"> Consulting Agreement [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ContractAward" xlink:to="KBLB_ContractAward_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ContractAward_doc" xml:lang="en-US"> Contract award. </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_ContractAwardAdditionalMember" xlink:label="KBLB_ContractAwardAdditionalMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ContractAwardAdditionalMember" xlink:to="KBLB_ContractAwardAdditionalMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ContractAwardAdditionalMember_doc" xml:lang="en-US"> Contract Award Additional [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_CustomerAMember" xlink:to="KBLB_CustomerAMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CustomerAMember_doc" xml:lang="en-US"> Customer A [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EducationalExpenses" xlink:to="KBLB_EducationalExpenses_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EducationalExpenses_doc" xml:lang="en-US"> Educational expenses. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EightCentWarrantMember" xlink:to="KBLB_EightCentWarrantMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EightCentWarrantMember_doc" xml:lang="en-US"> 8 Cent Warrants [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EmployeeBonusRatePercentage_doc" xml:lang="en-US"> Employee bonus rate percentage. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmployeeMember" xlink:to="KBLB_EmployeeMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EmployeeMember_doc" xml:lang="en-US"> Employee [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_EmploymentAgreementMember" xlink:to="KBLB_EmploymentAgreementMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EmploymentAgreementMember_doc" xml:lang="en-US"> Employment Agreement [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ExtendedExpirationDateDescription_doc" xml:lang="en-US"> Extended expiration date description. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_FairValueOfOptionsIssuedForServices_doc" xml:lang="en-US"> Fair value of options issued for services. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_FirstSixMonthsMember" xlink:to="KBLB_FirstSixMonthsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_FirstSixMonthsMember_doc" xml:lang="en-US"> First Six Months [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_GainOnSettlementOfAccountsPayable_doc" xml:lang="en-US"> Gain on settlement of accounts payable. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ImputedInterestRelatedParty_doc" xml:lang="en-US"> Imputed interest - related party. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets_doc" xml:lang="en-US"> Operating lease right-of-use, net. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_IntellectualPropertyTransferAgreementMember_doc" xml:lang="en-US"> Intellectual Property Transfer Agreement [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_JanuaryFourTwoThousandNineteenMember" xlink:label="KBLB_JanuaryFourTwoThousandNineteenMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_JanuaryFourTwoThousandNineteenMember" xlink:to="KBLB_JanuaryFourTwoThousandNineteenMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_JanuaryFourTwoThousandNineteenMember_doc" xml:lang="en-US"> January 4, 2019 [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_JanuaryTwoThousandAndFifteenWarrantMember_doc" xml:lang="en-US"> January 2015 Warrant [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LaboratoryEquipmentMember" xlink:to="KBLB_LaboratoryEquipmentMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_LaboratoryEquipmentMember_doc" xml:lang="en-US"> Laboratory Equipment [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseAgreementMember" xlink:to="KBLB_LicenseAgreementMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_LicenseAgreementMember_doc" xml:lang="en-US"> License Agreement [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseFee" xlink:to="KBLB_LicenseFee_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_LicenseFee_doc" xml:lang="en-US"> License fee. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LicenseMaintenanceFee" xlink:to="KBLB_LicenseMaintenanceFee_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_LicenseMaintenanceFee_doc" xml:lang="en-US"> License maintenance fee. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_LoanOneMember" xlink:to="KBLB_LoanOneMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_LoanOneMember_doc" xml:lang="en-US"> Loan One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MayTwoThousandAndFifteenWarrantMember_doc" xml:lang="en-US"> May 2015 Warrant [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_MayTwoThousandAndSixteenWarrantMember" xlink:label="KBLB_MayTwoThousandAndSixteenWarrantMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MayTwoThousandAndSixteenWarrantMember" xlink:to="KBLB_MayTwoThousandAndSixteenWarrantMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MayTwoThousandAndSixteenWarrantMember_doc" xml:lang="en-US"> May 2016 Warrant [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrJonathanRRiceMember" xlink:to="KBLB_MrJonathanRRiceMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MrJonathanRRiceMember_doc" xml:lang="en-US"> Mr. Jonathan R. Rice [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrKennethLeMember" xlink:to="KBLB_MrKennethLeMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MrKennethLeMember_doc" xml:lang="en-US"> Mr. Kenneth Le [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrRiceMember" xlink:to="KBLB_MrRiceMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MrRiceMember_doc" xml:lang="en-US"> Mr. Rice [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrThompsonMember" xlink:to="KBLB_MrThompsonMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MrThompsonMember_doc" xml:lang="en-US"> Mr. Thompson [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_NewEmploymentAgreementMember_doc" xml:lang="en-US"> New Employment Agreement [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_NineThroughTwentyThreeMonthsMember_doc" xml:lang="en-US"> Nine Through Twenty Three Months [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_NotreDameMember" xlink:to="KBLB_NotreDameMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_NotreDameMember_doc" xml:lang="en-US"> Notre Dame [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OfficeAndManufacturingSpaceMember_doc" xml:lang="en-US"> Office and Manufacturing Space [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OfficeEmployeeMember" xlink:to="KBLB_OfficeEmployeeMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OfficeEmployeeMember_doc" xml:lang="en-US"> Office Employee [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_OneOfLeaseMember" xlink:label="KBLB_OneOfLeaseMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OneOfLeaseMember" xlink:to="KBLB_OneOfLeaseMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OneOfLeaseMember_doc" xml:lang="en-US"> One of Lease [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OneTimeBonusMember" xlink:to="KBLB_OneTimeBonusMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OneTimeBonusMember_doc" xml:lang="en-US"> One-Time Bonus [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OperatingLeaseAgreementsMember_doc" xml:lang="en-US"> Operating Lease Agreements [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OperatingLeaseExpensesMember_doc" xml:lang="en-US"> Operating Lease Expenses [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OperatingLeaseExpensesOneMember_doc" xml:lang="en-US"> Operating Lease Expenses One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OperatingLeaseExpensesRelatedPartyMember_doc" xml:lang="en-US"> Operating Lease Expenses - Related Party [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OperatingLeasesRentExpense" xlink:to="KBLB_OperatingLeasesRentExpense_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OperatingLeasesRentExpense_doc" xml:lang="en-US"> Operating leases, rent expense. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OptionTerm" xlink:to="KBLB_OptionTerm_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OptionTerm_doc" xml:lang="en-US"> Option term </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_OptionsIssuedForServices" xlink:to="KBLB_OptionsIssuedForServices_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OptionsIssuedForServices_doc" xml:lang="en-US"> Options issued for services. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PurchaseAgreementMember" xlink:to="KBLB_PurchaseAgreementMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_PurchaseAgreementMember_doc" xml:lang="en-US"> Purchase Agreement [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RelatedPartyMember" xlink:to="KBLB_RelatedPartyMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RelatedPartyMember_doc" xml:lang="en-US"> Related Party [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RentIncreasePercentage" xlink:to="KBLB_RentIncreasePercentage_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RentIncreasePercentage_doc" xml:lang="en-US"> Rent increase percentage. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RentRelatedParty" xlink:to="KBLB_RentRelatedParty_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RentRelatedParty_doc" xml:lang="en-US"> Rent - Related Party. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseAssetsAndLeaseLiabilitityTextBlock_doc" xml:lang="en-US"> Right to use assets and lease liability [Text Block] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RightToUseAssetsNetMember" xlink:to="KBLB_RightToUseAssetsNetMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseAssetsNetMember_doc" xml:lang="en-US"> Right to Use Assets Net [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseAssetsNetOneMember_doc" xml:lang="en-US"> Right to Use Assets Net One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseAssetsNetRelatedPartyMember_doc" xml:lang="en-US"> Right to Use Assets Net - Related Party [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseLiabilityNetMember_doc" xml:lang="en-US"> Right to Use Liability Net [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseLiabilityNetOneMember_doc" xml:lang="en-US"> Right to Use Liability Net One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RightToUseLiabilityNetRelatedPartyMember_doc" xml:lang="en-US"> Right to Use Liability Net - Related Party [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RoyaltyAndResearchAgreementsMember_doc" xml:lang="en-US"> Royalty and Research Agreements [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_RoyaltyPercentage" xlink:to="KBLB_RoyaltyPercentage_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_RoyaltyPercentage_doc" xml:lang="en-US"> Royalty percentage. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ScheduleOfLeaseLiabilityTableTextBlock_doc" xml:lang="en-US"> Schedule of lease liability [Table Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ScheduleOfRightUseOfAssetsTableTextBlock_doc" xml:lang="en-US"> Schedule of right use of assets [Table Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ScheduleOfWarrantsActivityTableTextBlock_doc" xml:lang="en-US"> Schedule of warrants activity [Table Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ScheduleOfWarrantsOutstandingTableTextBlock_doc" xml:lang="en-US"> Schedule of warrants outstanding [Table Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SeriesAPreferredStocksMember_doc" xml:lang="en-US"> Preferred Stock - Series A [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SettlementOfAccountsPayableWithNotePayable_doc" xml:lang="en-US"> Settlement of accounts payable with note payable. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SettlementOfAccountsPayableWithStockIssuance_doc" xml:lang="en-US"> Settlement of accounts payable with stock issuance. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SevenAndEightMonthsMember" xlink:to="KBLB_SevenAndEightMonthsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SevenAndEightMonthsMember_doc" xml:lang="en-US"> Seven and Eight Months [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeituresdRate_doc" xml:lang="en-US"> Expected forfeitures. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsExercisableNumber_doc" xml:lang="en-US"> Warrants Exercisable. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsForfeituresInPeriodWeightedAverageExercisePrice_doc" xml:lang="en-US"> Weighted Average Exercise Price, Cancelled/Forfeited. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingIntrinsicValue_doc" xml:lang="en-US"> Number of Warrants, Intrinsic Value. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_doc" xml:lang="en-US"> Weighted Average Exercise Price, Beginning balance. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_doc" xml:lang="en-US"> Weighted Average Exercise Price, Intrinsic Value. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice_doc" xml:lang="en-US"> Weighted Average Exercise Price, Exercised. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsGrantsInPeriodWeightedAverageExercisePrice_doc" xml:lang="en-US"> Weighted Average Exercise Price, Granted. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:to="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm_doc" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Ending balance. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingWeightedAverageRemainingContractualTerm2_doc" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Beginning balance. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayable_doc" xml:lang="en-US"> Shares issued in exchange for accounts payable. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SharesIssuedInExchangeForAccountsPayableShares_doc" xml:lang="en-US"> Shares issued in exchange for accounts payable, shares. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SixCentWarrantMember" xlink:to="KBLB_SixCentWarrantMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SixCentWarrantMember_doc" xml:lang="en-US"> 6 Cent Warrants [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SocialistRepublicOfVietnamMember_doc" xml:lang="en-US"> Socialist Republic of Vietnam [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockWarrantsMember" xlink:to="KBLB_StockWarrantsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_StockWarrantsMember_doc" xml:lang="en-US"> Stock Warrants [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockholderMember" xlink:to="KBLB_StockholderMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_StockholderMember_doc" xml:lang="en-US"> Stockholder [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_TerminationAgreementDescription_doc" xml:lang="en-US"> Termination agreement description. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ThreeThroughFiveYearsMember_doc" xml:lang="en-US"> Three through Five Years [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_TwentyFourthMonthsMember" xlink:to="KBLB_TwentyFourthMonthsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_TwentyFourthMonthsMember_doc" xml:lang="en-US"> 24th Month [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_TwoOfLeaseMember" xlink:label="KBLB_TwoOfLeaseMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_TwoOfLeaseMember" xlink:to="KBLB_TwoOfLeaseMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_TwoOfLeaseMember_doc" xml:lang="en-US"> Two of Lease [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_UniversityOfNotreDameMember_doc" xml:lang="en-US"> University of Notre Dame [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_UnsecuredPromissoryNoteMember_doc" xml:lang="en-US"> Unsecured Promissory Note [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantExpirationDate" xlink:to="KBLB_WarrantExpirationDate_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantExpirationDate_doc" xml:lang="en-US"> Warrant expiration date. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantFiveMember" xlink:to="KBLB_WarrantFiveMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantFiveMember_doc" xml:lang="en-US"> Warrant Five [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantFourMember" xlink:to="KBLB_WarrantFourMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantFourMember_doc" xml:lang="en-US"> Warrant Four [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantOneMember" xlink:to="KBLB_WarrantOneMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantOneMember_doc" xml:lang="en-US"> Warrant One [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSevenMember" xlink:to="KBLB_WarrantSevenMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantSevenMember_doc" xml:lang="en-US"> Warrant Seven [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSharesFullyVested" xlink:to="KBLB_WarrantSharesFullyVested_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantSharesFullyVested_doc" xml:lang="en-US"> Warrant shares fully vested. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantSixMember" xlink:to="KBLB_WarrantSixMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantSixMember_doc" xml:lang="en-US"> Warrant Six [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantThreeMember" xlink:to="KBLB_WarrantThreeMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantThreeMember_doc" xml:lang="en-US"> Warrant Three [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantTwoMember" xlink:to="KBLB_WarrantTwoMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantTwoMember_doc" xml:lang="en-US"> Warrant Two [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsCancelledAmount" xlink:to="KBLB_WarrantsCancelledAmount_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantsCancelledAmount_doc" xml:lang="en-US"> Warrants cancelled amount. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantsExercisableDescription_doc" xml:lang="en-US"> Warrants exercisable description. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WarrantsExpenses" xlink:to="KBLB_WarrantsExpenses_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantsExpenses_doc" xml:lang="en-US"> Warrants expenses. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_WorkingCapital" xlink:to="KBLB_WorkingCapital_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WorkingCapital_doc" xml:lang="en-US"> Working capital. </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_YearOneAndTwoMember" xlink:label="KBLB_YearOneAndTwoMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_YearOneAndTwoMember" xlink:to="KBLB_YearOneAndTwoMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_YearOneAndTwoMember_doc" xml:lang="en-US"> Year One and Two [Member] </link:label>

<link:loc xlink:type="locator" xlink:href="kblb-20200331.xsd#KBLB_YearThreeAndFiveMember" xlink:label="KBLB_YearThreeAndFiveMember"/>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_YearThreeAndFiveMember" xlink:to="KBLB_YearThreeAndFiveMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_YearThreeAndFiveMember_doc" xml:lang="en-US"> Year Three and Five [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_BasisOfPresentationPolicyTextBlock_doc" xml:lang="en-US"> Basis of presentation [Policy Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ScheduleOfOptionsOutstandingTableTextBlock_doc" xml:lang="en-US"> Schedule of options outstanding [Table Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionOneMember_doc" xml:lang="en-US"> Common Stock Warrants and Options One [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionTwoMember_doc" xml:lang="en-US"> Common Stock Warrants and Options Two [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CommonStockWarrantsAndOptionMember_doc" xml:lang="en-US"> Common Stock Warrants and Options [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_PrincipalStockHoldersMember_doc" xml:lang="en-US"> Principal Stockholder [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockOptionsMember" xlink:to="KBLB_StockOptionsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_StockOptionsMember_doc" xml:lang="en-US"> Stock Options [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStock_doc" xml:lang="en-US"> Stock issued during the period exercise of warrants in exchange for stock. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares" xlink:to="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_StockIssuedDuringPeriodExerciseOfWarrantsInExchangeForStockShares_doc" xml:lang="en-US"> Stock issued during the period exercise of warrants in exchange for stock. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_CancellationOfWarrantsIssuedForServices_doc" xml:lang="en-US"> Cancellation of warrants issued for services. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ExerciseOfWarrants" xlink:to="KBLB_ExerciseOfWarrants_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_ExerciseOfWarrants_doc" xml:lang="en-US"> Exercise of warrants. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_WarrantsIssuedcancelledToConsultants_doc" xml:lang="en-US"> Warrants issued/(cancelled) to consultants. </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_OrganizationPolicyTextBlock_doc" xml:lang="en-US"> Organization [Policy Text Block] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2" xlink:to="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_SharebasedCompensationArrangementBySharebasedPaymentAwardNonOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm2_doc" xml:lang="en-US"> Weighted Average Remaining Contractual Life (In Years), Granted. </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_MrThompsonOneMember" xlink:to="KBLB_MrThompsonOneMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_MrThompsonOneMember_doc" xml:lang="en-US"> Mr. Thompson One [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_AnotherFiveYearsMember" xlink:to="KBLB_AnotherFiveYearsMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_AnotherFiveYearsMember_doc" xml:lang="en-US"> Another 5 Years [Member] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PrincipalStockholderMember" xlink:to="KBLB_PrincipalStockholderMember_doc" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_PrincipalStockholderMember_doc" xml:lang="en-US"> Principal Stockholder [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="KBLB_EmployeeStockOptionPlanMember_doc" xml:lang="en-US"> Employee Stock Option Plan [Member] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionOneMember_3_lbl" xml:lang="en-US"> CommonStockWarrantsAndOptionOneMember </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionTwoMember_3_lbl" xml:lang="en-US"> CommonStockWarrantsAndOptionTwoMember </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_CommonStockWarrantsAndOptionMember_3_lbl" xml:lang="en-US"> CommonStockWarrantsAndOptionMember </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_PrincipalStockholderMember" xlink:to="KBLB_PrincipalStockholderMember_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_PrincipalStockholderMember_3_lbl" xml:lang="en-US"> PrincipalStockholderMember </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_2_lbl" xml:lang="en-US"> Assets, Current </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_2_lbl" xml:lang="en-US"> Assets </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_2_lbl" xml:lang="en-US"> Liabilities, Current </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_2_lbl" xml:lang="en-US"> Liabilities </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_2_lbl" xml:lang="en-US"> Liabilities and Equity </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_2_lbl" xml:lang="en-US"> Operating Expenses [Default Label] </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_2_lbl" xml:lang="en-US"> Operating Income (Loss) </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_2_lbl" xml:lang="en-US"> Interest Expense </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_2_lbl" xml:lang="en-US"> Nonoperating Income (Expense) </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2_lbl" xml:lang="en-US"> Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesOutstanding_3_lbl" xml:lang="en-US"> Shares, Outstanding </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ImputedInterestRelatedParty_3_lbl" xml:lang="en-US"> ImputedInterestRelatedParty </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_WarrantsIssuedcancelledToConsultants_3_lbl" xml:lang="en-US"> WarrantsIssuedcancelledToConsultants </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_2_lbl" xml:lang="en-US"> Increase (Decrease) in Prepaid Expense </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_2_lbl" xml:lang="en-US"> Increase (Decrease) in Accounts Receivable </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_IncreaseDecreaseInOperatingLeaseRightofuseAssets_3_lbl" xml:lang="en-US"> IncreaseDecreaseInOperatingLeaseRightofuseAssets </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_2_lbl" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_2_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_2_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_2_lbl" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_3_lbl" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_AccruedInterestRelatedPartyTextBlock_3_lbl" xml:lang="en-US"> AccruedInterestRelatedPartyTextBlock </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_2_lbl" xml:lang="en-US"> Stockholders' Equity Note Disclosure [Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_2_lbl" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_2_lbl" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_2_lbl" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_2_lbl" xml:lang="en-US"> Deferred Tax Assets, Valuation Allowance </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2_lbl" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseCost_2_lbl" xml:lang="en-US"> Lease, Cost </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_3_lbl" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_2_lbl" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_4_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice_4_lbl" xml:lang="en-US"> ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePrice </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue" xlink:to="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_3_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="KBLB_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue_3_lbl" xml:lang="en-US"> ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsOutstandingWeightedAverageExercisePriceIntrinsicValue </link:label>

<link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_2_lbl" xlink:type="arc"/>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseAndRentalExpense_2_lbl" xml:lang="en-US"> Operating Leases, Rent Expense </link:label>

<link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_2_lbl" xml:lang="en-US"> Accounts Payable and Accrued Liabilities </link:label>

</link:labelLink>

</link:linkbase>

22 Subsequent Filings that Reference this Filing

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

11/22/23  Kraig Biocraft Laboratories, Inc. S-1/A                 67:13M                                    M2 Compliance LLC/FA
 9/01/23  Kraig Biocraft Laboratories, Inc. POS AM                67:13M                                    M2 Compliance LLC/FA
 9/01/23  Kraig Biocraft Laboratories, Inc. S-1/A                 67:13M                                    M2 Compliance LLC/FA
 6/06/23  Kraig Biocraft Laboratories, Inc. S-1/A                 66:13M                                    M2 Compliance LLC/FA
 5/09/23  Kraig Biocraft Laboratories, Inc. S-1/A                  1:2.2M                                   M2 Compliance LLC/FA
 4/27/23  Kraig Biocraft Laboratories, Inc. S-1/A                  1:2.2M                                   M2 Compliance LLC/FA
 4/14/23  Kraig Biocraft Laboratories, Inc. S-1/A                 65:9.9M                                   M2 Compliance LLC/FA
 4/14/23  Kraig Biocraft Laboratories, Inc. POS AM                65:9.1M                                   M2 Compliance LLC/FA
12/01/22  Kraig Biocraft Laboratories, Inc. S-1/A                 65:14M                                    M2 Compliance LLC/FA
 5/25/22  Kraig Biocraft Laboratories, Inc. S-1/A                 64:12M                                    M2 Compliance LLC/FA
 4/14/22  Kraig Biocraft Laboratories, Inc. S-1/A                 65:10M                                    M2 Compliance LLC/FA
 3/23/22  Kraig Biocraft Laboratories, Inc. S-1/A                 65:9.7M                                   M2 Compliance LLC/FA
 2/10/22  Kraig Biocraft Laboratories, Inc. S-1                   67:13M                                    M2 Compliance LLC/FA
12/03/21  Kraig Biocraft Laboratories, Inc. S-1/A                 64:13M                                    M2 Compliance LLC/FA
 8/25/21  Kraig Biocraft Laboratories, Inc. S-1/A                 63:12M                                    M2 Compliance LLC/FA
 5/26/21  Kraig Biocraft Laboratories, Inc. S-1/A                 86:9.3M                                   M2 Compliance LLC/FA
 4/15/21  Kraig Biocraft Laboratories, Inc. S-1/A                  1:74K                                    M2 Compliance LLC/FA
 4/14/21  Kraig Biocraft Laboratories, Inc. S-1/A                  2:161K                                   M2 Compliance LLC/FA
 4/05/21  Kraig Biocraft Laboratories, Inc. S-1                   63:6M                                     M2 Compliance LLC/FA
 2/18/21  Kraig Biocraft Laboratories, Inc. S-1/A                 78:9.1M                                   M2 Compliance LLC/FA
 2/08/21  Kraig Biocraft Laboratories, Inc. S-1/A                 78:9.1M                                   M2 Compliance LLC/FA
 8/24/20  Kraig Biocraft Laboratories, Inc. S-1/A                 68:7.8M                                   M2 Compliance LLC/FA

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