SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Deluxe Corp. – ‘10-K’ for 12/31/23 – ‘EX-101.DEF’

On:  Thursday, 2/22/24, at 1:11pm ET   ·   For:  12/31/23   ·   Accession #:  27996-24-65   ·   File #:  1-07945

Previous ‘10-K’:  ‘10-K’ on 2/24/23 for 12/31/22   ·   Latest ‘10-K’:  This Filing   ·   25 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

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

 2/22/24  Deluxe Corp.                      10-K       12/31/23  106:15M

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Deluxe Corporation 10-K 12.31.2023                  HTML   2.66M 
 2: EX-10.14    Material Contract                                   HTML     86K 
 3: EX-10.15    Material Contract                                   HTML     65K 
 4: EX-10.23    Material Contract                                   HTML     57K 
 5: EX-21.1     Subsidiaries List                                   HTML     30K 
 6: EX-23.1     Consent of Expert or Counsel                        HTML     28K 
10: EX-97       Clawback Policy re: Recovery of Erroneously         HTML     48K 
                Awarded Compensation                                             
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     33K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     33K 
 9: EX-32.1     Certification -- §906 - SOA'02                      HTML     30K 
16: R1          Document                                            HTML    100K 
17: R2          Consolidated Balance Sheets                         HTML    146K 
18: R3          Consolidated Balance Sheets (Parentheticals)        HTML     40K 
19: R4          Consolidated Statements of Income                   HTML    118K 
20: R5          Consolidated Statements of Comprehensive Income     HTML    143K 
21: R6          Consolidated Statements of Shareholders' Equity     HTML    106K 
22: R7          Consolidated Statements of Shareholders' Equity     HTML     30K 
                (Parentheticals)                                                 
23: R8          Consolidated Statements of Cash Flows               HTML    126K 
24: R9          Significant Accounting Policies                     HTML     93K 
25: R10         New Accounting Pronouncements                       HTML     46K 
26: R11         Supplemental Balance Sheet and Cash Flow            HTML    238K 
                Information                                                      
27: R12         Earnings Per Share                                  HTML     61K 
28: R13         Other Comprehensive Income (Loss)                   HTML     92K 
29: R14         Acquisition and Divestitures                        HTML     47K 
30: R15         Derivative Financial Instruments                    HTML     47K 
31: R16         Fair Value Measurements                             HTML     95K 
32: R17         Restructuring and Integration Expense               HTML     61K 
33: R18         Income Tax Provision                                HTML    144K 
34: R19         Share-Based Compensation Plans                      HTML     89K 
35: R20         Postretirement Benefits                             HTML    175K 
36: R21         Debt                                                HTML     65K 
37: R22         Leases                                              HTML     84K 
38: R23         Other Commitments and Contingencies                 HTML     38K 
39: R24         Shareholders' Equity                                HTML     35K 
40: R25         Business Segment Information                        HTML    173K 
41: R26         Significant Accounting Policies (Policies)          HTML    168K 
42: R27         New Accounting Pronouncements (Policies)            HTML     37K 
43: R28         Supplemental Balance Sheet and Cash Flow            HTML    264K 
                Information (Tables)                                             
44: R29         Earnings Per Share (Tables)                         HTML     61K 
45: R30         Other Comprehensive Income (Loss) (Tables)          HTML     93K 
46: R31         Acquisition and Divestitures (Tables)               HTML     40K 
47: R32         Derivative Financial Instruments (Tables)           HTML     46K 
48: R33         Fair Value Measurements (Tables)                    HTML     81K 
49: R34         Restructuring and Integration Expense (Tables)      HTML     60K 
50: R35         Income Tax Provision (Tables)                       HTML    148K 
51: R36         Share-Based Compensation Plans (Tables)             HTML     90K 
52: R37         Postretirement Benefits (Tables)                    HTML    179K 
53: R38         Debt (Tables)                                       HTML     60K 
54: R39         Leases (Tables)                                     HTML     89K 
55: R40         Business Segment Information (Tables)               HTML    168K 
56: R41         Significant Accounting Policies (Cash and Cash      HTML     33K 
                Equivalents and Trade Accounts Receivable)                       
                (Details)                                                        
57: R42         Significant Accounting Policies (Property, Plant    HTML     41K 
                and Equipment and Leases) (Details)                              
58: R43         Significant Accounting Policies (Intangibles)       HTML     35K 
                (Details)                                                        
59: R44         Significant Accounting Policies (Business           HTML     36K 
                Combinations and Prepaid Product Discounts)                      
                (Details)                                                        
60: R45         Significant Accounting Policies (Loans and Notes    HTML     37K 
                Receivable From Distributors and Advertising                     
                Costs) (Details)                                                 
61: R46         Significant Accounting Policies (Income Taxes,      HTML     45K 
                Revenue Recognition) (Details)                                   
62: R47         Significant Accounting Policies (Employee           HTML     42K 
                Share-Based Compensation) (Details)                              
63: R48         Supplemental Balance Sheet and Cash Flow            HTML     46K 
                Information (Trade Accounts Receivable) (Details)                
64: R49         Supplemental Balance Sheet and Cash Flow            HTML     46K 
                Information (Inventories and Supplies) (Details)                 
65: R50         Supplemental Balance Sheet and Cash Flow            HTML     60K 
                Information (Available-For-Sale Debt Securities)                 
                (Details)                                                        
66: R51         Supplemental Balance Sheet and Cash Flow            HTML     36K 
                Information (Revenue in Excess of Billings)                      
                (Details)                                                        
67: R52         Supplemental Balance Sheet and Cash Flow            HTML     46K 
                Information (Property, Plant and Equipment)                      
                (Details)                                                        
68: R53         Supplemental Balance Sheet and Cash Flow            HTML     78K 
                Information (Intangibles) (Details)                              
69: R54         Supplemental Balance Sheet and Cash Flow            HTML     54K 
                Information (Goodwill) (Details)                                 
70: R55         Supplemental Balance Sheet and Cash Flow            HTML     92K 
                Information (Other Non-Current Assets) (Details)                 
71: R56         Supplemental Balance Sheet and Cash Flow            HTML     53K 
                Information (Accrued Liabilities) (Details)                      
72: R57         Supplemental Balance Sheet and Cash Flow            HTML     60K 
                Information (Supplemental Cash Flow Information)                 
                (Details)                                                        
73: R58         Earnings Per Share (Details)                        HTML     99K 
74: R59         Other Comprehensive Income (Loss)                   HTML     67K 
                (Reclassification Adjustments) (Details)                         
75: R60         Other Comprehensive Income (Loss) (Accumulated      HTML     65K 
                Other Comprehensive Loss) (Details)                              
76: R61         Acquisition and Divestitures (Details)              HTML    110K 
77: R62         Derivative Financial Instruments (Details)          HTML     49K 
78: R63         Fair Value Measurements (Goodwill Impairment        HTML     49K 
                Analyses) (Details)                                              
79: R64         Fair Value Measurements (Financial Instruments)     HTML    105K 
                (Details)                                                        
80: R65         Restructuring and Integration Expense (Details)     HTML     59K 
81: R66         Restructuring and Integration Expense               HTML     43K 
                (Restructuring and Integration Accruals) (Details)               
82: R67         Income Tax Provision (Income Tax Provision)         HTML    106K 
                (Details)                                                        
83: R68         Income Tax Provision (Repatriation and              HTML     68K 
                Unrecognized Tax Benefits) (Details)                             
84: R69         Income Tax Provision (Deferred Income Taxes)        HTML     93K 
                (Details)                                                        
85: R70         Income Tax Provision (Net Operating Loss, Tax       HTML     38K 
                Credit and Capital Loss Carryforwards) (Details)                 
86: R71         Share-Based Compensation Plans (Long-Term           HTML     60K 
                Incentive Plan and Share-Based Compensation                      
                Expense) (Details)                                               
87: R72         Share-Based Compensation Plans (Award Terms)        HTML     59K 
                (Details)                                                        
88: R73         Share-Based Compensation Plans (Stock Options)      HTML     78K 
                (Details)                                                        
89: R74         Share-Based Compensation Plans (Restricted Stock    HTML     87K 
                Units and Performance Share Unit Awards) (Details)               
90: R75         Share-Based Compensation Plans (Employee Stock      HTML     37K 
                Purchase Plan) (Details)                                         
91: R76         Postretirement Benefits (Obligations and Funded     HTML     92K 
                Status) (Details)                                                
92: R77         Postretirement Benefits (Net Periodic Benefit       HTML     83K 
                Income and Actuarial Assumptions) (Details)                      
93: R78         Postretirement Benefits (Plan Assets) (Details)     HTML    109K 
94: R79         Postretirement Benefits (Cash Flows) (Details)      HTML     73K 
95: R80         Postretirement Benefits (401k Plan) (Details)       HTML     47K 
96: R81         Debt (Details)                                      HTML    171K 
97: R82         Leases (Details)                                    HTML    149K 
98: R83         Other Commitments and Contingencies (Details)       HTML     34K 
99: R84         Shareholders' Equity (Details)                      HTML     35K 
100: R85         Business Segment Information (Segment Results)      HTML     94K  
                (Details)                                                        
101: R86         Business Segment Information (Disaggregated         HTML     84K  
                Revenue Information) (Details)                                   
103: XML         IDEA XML File -- Filing Summary                      XML    195K  
106: XML         XBRL Instance -- dlx-20231231_htm                    XML   4.06M  
102: EXCEL       IDEA Workbook of Financial Report Info              XLSX    252K  
12: EX-101.CAL  XBRL Calculations -- dlx-20231231_cal                XML    389K 
13: EX-101.DEF  XBRL Definitions -- dlx-20231231_def                 XML   1.07M 
14: EX-101.LAB  XBRL Labels -- dlx-20231231_lab                      XML   2.84M 
15: EX-101.PRE  XBRL Presentations -- dlx-20231231_pre               XML   1.69M 
11: EX-101.SCH  XBRL Schema -- dlx-20231231                          XSD    215K 
104: JSON        XBRL Instance as JSON Data -- MetaLinks              778±  1.19M  
105: ZIP         XBRL Zipped Folder -- 0000027996-24-000065-xbrl      Zip    831K  


‘EX-101.DEF’   —   XBRL Definitions — dlx-20231231_def


This Exhibit is an XBRL File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with the Workiva Platform -->
<!-- Copyright 2024 Workiva -->
<!-- r:ed66dd7f-6cf3-4dd7-9bd7-d71f056e9d3c,g:ec6ca1eb-bf43-4f45-9b44-026474a9ca65 -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
<link:roleRef roleURI="http://www.deluxe.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" xlink:type="simple" xlink:href="dlx-20231231.xsd#CONSOLIDATEDSTATEMENTSOFINCOME"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/CONSOLIDATEDSTATEMENTSOFINCOME" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_b72c6441-af33-485c-a758-b78582d75112" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_StatementTable_b72c6441-af33-485c-a758-b78582d75112" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_b807d71b-01c1-46c5-bb39-cff8b17b8837" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_b72c6441-af33-485c-a758-b78582d75112" xlink:to="loc_srt_ProductOrServiceAxis_b807d71b-01c1-46c5-bb39-cff8b17b8837" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b807d71b-01c1-46c5-bb39-cff8b17b8837_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_b807d71b-01c1-46c5-bb39-cff8b17b8837" xlink:to="loc_srt_ProductsAndServicesDomain_b807d71b-01c1-46c5-bb39-cff8b17b8837_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_c3a85b60-c15b-4073-a640-345d2828b9ae" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_b807d71b-01c1-46c5-bb39-cff8b17b8837" xlink:to="loc_srt_ProductsAndServicesDomain_c3a85b60-c15b-4073-a640-345d2828b9ae" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductMember_1973dcde-4d7c-4d19-8579-c93d939d268a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c3a85b60-c15b-4073-a640-345d2828b9ae" xlink:to="loc_us-gaap_ProductMember_1973dcde-4d7c-4d19-8579-c93d939d268a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServiceMember_fdc63ea8-9e7c-4ab9-b0c7-73255bc2d19f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ServiceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c3a85b60-c15b-4073-a640-345d2828b9ae" xlink:to="loc_us-gaap_ServiceMember_fdc63ea8-9e7c-4ab9-b0c7-73255bc2d19f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_0c464f6c-69db-4305-9f48-09a4037f3fd9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_Revenues_0c464f6c-69db-4305-9f48-09a4037f3fd9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_3908437b-219b-452d-bb6f-3f906d2627e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfRevenue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_CostOfRevenue_3908437b-219b-452d-bb6f-3f906d2627e4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_69713c56-f47f-4319-a1ca-66c08bad58bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_GrossProfit_69713c56-f47f-4319-a1ca-66c08bad58bd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_9843e8b3-a470-440f-bd4f-17a9a753003d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_9843e8b3-a470-440f-bd4f-17a9a753003d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_RestructuringOperatingExpense_6118edbc-6aac-4c63-adb4-6d77b9c9b492" xlink:href="dlx-20231231.xsd#dlx_RestructuringOperatingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_dlx_RestructuringOperatingExpense_6118edbc-6aac-4c63-adb4-6d77b9c9b492" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_699ca574-b30e-4654-88dd-4aa473e35d99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_699ca574-b30e-4654-88dd-4aa473e35d99" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_6ba3cf03-c9b0-400a-9d9c-8064b807d175" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_OperatingIncomeLoss_6ba3cf03-c9b0-400a-9d9c-8064b807d175" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_b178d31c-34da-48fe-919b-099ae5e2c162" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_InterestExpense_b178d31c-34da-48fe-919b-099ae5e2c162" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_5d7a725b-cb8a-4777-b451-3204d00def65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_5d7a725b-cb8a-4777-b451-3204d00def65" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b93ca067-12ad-4aee-90fa-754033b5e9c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b93ca067-12ad-4aee-90fa-754033b5e9c2" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_fd213bbe-98d9-4314-8814-fe454dd10b00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_fd213bbe-98d9-4314-8814-fe454dd10b00" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_039dee54-2fa5-4ac0-bcfc-0f1faf2db86a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_ProfitLoss_039dee54-2fa5-4ac0-bcfc-0f1faf2db86a" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_b3536dc7-78bf-4ec4-bbae-aa2c2c9fc1a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_b3536dc7-78bf-4ec4-bbae-aa2c2c9fc1a1" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_9681a40f-6997-41b1-b479-3edc86100874" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_NetIncomeLoss_9681a40f-6997-41b1-b479-3edc86100874" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_2400ebcf-79b0-48df-a999-4fbbb5e491d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_EarningsPerShareBasic_2400ebcf-79b0-48df-a999-4fbbb5e491d1" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_8fe95806-bcb8-459f-88b3-b2490bda0b87" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareDiluted"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b2291174-4355-4027-b313-79f9f72b1558" xlink:to="loc_us-gaap_EarningsPerShareDiluted_8fe95806-bcb8-459f-88b3-b2490bda0b87" xlink:type="arc" order="15"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="simple" xlink:href="dlx-20231231.xsd#CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_cbf46487-2fe5-4c41-89e7-e4767209358b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_StatementTable_cbf46487-2fe5-4c41-89e7-e4767209358b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_199d6835-6897-4c8b-911b-b9b7461afe19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_cbf46487-2fe5-4c41-89e7-e4767209358b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_199d6835-6897-4c8b-911b-b9b7461afe19" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_199d6835-6897-4c8b-911b-b9b7461afe19_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_199d6835-6897-4c8b-911b-b9b7461afe19" xlink:to="loc_us-gaap_EquityComponentDomain_199d6835-6897-4c8b-911b-b9b7461afe19_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_199d6835-6897-4c8b-911b-b9b7461afe19" xlink:to="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_9f040e5f-0672-488f-a4a1-1c58d9b3873c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:to="loc_us-gaap_CommonStockMember_9f040e5f-0672-488f-a4a1-1c58d9b3873c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_a8d4fb78-ed02-4d6a-a367-69c906c803ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_a8d4fb78-ed02-4d6a-a367-69c906c803ac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_32be6934-925f-42f2-806c-32e5d98df2df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:to="loc_us-gaap_RetainedEarningsMember_32be6934-925f-42f2-806c-32e5d98df2df" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4fdb778f-9ab8-4a07-9c97-d61a793b3773" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_4fdb778f-9ab8-4a07-9c97-d61a793b3773" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_9cd3b8ab-f333-47ea-9dfb-26acef44b823" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NoncontrollingInterestMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f763a2d9-2b4c-4b99-aca1-5114ee9123e8" xlink:to="loc_us-gaap_NoncontrollingInterestMember_9cd3b8ab-f333-47ea-9dfb-26acef44b823" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_baef8ed7-32ae-49e2-90cd-41d5fc5b3997" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_baef8ed7-32ae-49e2-90cd-41d5fc5b3997" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_b98e0a04-f7ad-44ab-a96b-9f9dbf2c4090" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_b98e0a04-f7ad-44ab-a96b-9f9dbf2c4090" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_98270559-7cd0-4cb4-975d-93b39c8ab8c7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_NetIncomeLoss_98270559-7cd0-4cb4-975d-93b39c8ab8c7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_fb1e4bda-54b1-40f3-ba0c-762ecefe2e89" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_fb1e4bda-54b1-40f3-ba0c-762ecefe2e89" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_1f2acb7e-2772-4733-b91e-929c76d05b13" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_ProfitLoss_1f2acb7e-2772-4733-b91e-929c76d05b13" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_19734a33-a0fc-4b0f-a72b-909b0044309a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsCommonStockCash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_DividendsCommonStockCash_19734a33-a0fc-4b0f-a72b-909b0044309a" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_StockIssuedDuringPeriodValueNetOfTaxWithheld_e9f6acc0-132a-440c-8268-484511edab41" xlink:href="dlx-20231231.xsd#dlx_StockIssuedDuringPeriodValueNetOfTaxWithheld"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_dlx_StockIssuedDuringPeriodValueNetOfTaxWithheld_e9f6acc0-132a-440c-8268-484511edab41" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_StockIssuedDuringPeriodSharesNetOfTaxWithheld_7c332522-74d9-4d5d-b339-130c94998de8" xlink:href="dlx-20231231.xsd#dlx_StockIssuedDuringPeriodSharesNetOfTaxWithheld"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_dlx_StockIssuedDuringPeriodSharesNetOfTaxWithheld_7c332522-74d9-4d5d-b339-130c94998de8" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_37f849ee-7c61-44b8-969f-c6f1d128ccda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_37f849ee-7c61-44b8-969f-c6f1d128ccda" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_503cc1b1-992a-4ed5-be69-0d4c77920497" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_503cc1b1-992a-4ed5-be69-0d4c77920497" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_3d7abf0e-e5c7-4d77-8f81-916ba0828975" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_3d7abf0e-e5c7-4d77-8f81-916ba0828975" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_07de0557-718f-47e9-b81e-1de8e5ac3fba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33a285ec-9f38-4d28-abfb-880f7aae52a1" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_07de0557-718f-47e9-b81e-1de8e5ac3fba" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_1cd3bdf7-a382-40e9-bad5-c81c62a18056" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_1caf4789-8026-45cd-bc74-24f49fa76e46" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONTables" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONTables"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_cdad01fa-1407-4fa0-82c2-2d1af52e4890" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_StatementTable_cdad01fa-1407-4fa0-82c2-2d1af52e4890" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_ec70bf09-8721-47cb-84e0-85d4bb654fd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_cdad01fa-1407-4fa0-82c2-2d1af52e4890" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_ec70bf09-8721-47cb-84e0-85d4bb654fd6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_ec70bf09-8721-47cb-84e0-85d4bb654fd6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_ec70bf09-8721-47cb-84e0-85d4bb654fd6" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_ec70bf09-8721-47cb-84e0-85d4bb654fd6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_3c401ac0-7042-4ef2-898f-3e59b17f9bb6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_ec70bf09-8721-47cb-84e0-85d4bb654fd6" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_3c401ac0-7042-4ef2-898f-3e59b17f9bb6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_bf0a5097-869a-4652-90ac-4f438dd55ca2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeAccountsReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_3c401ac0-7042-4ef2-898f-3e59b17f9bb6" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_bf0a5097-869a-4652-90ac-4f438dd55ca2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableMember_89a2bc39-417a-467c-82cc-b18c341f39c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NotesReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_3c401ac0-7042-4ef2-898f-3e59b17f9bb6" xlink:to="loc_us-gaap_NotesReceivableMember_89a2bc39-417a-467c-82cc-b18c341f39c1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_e60268bd-83eb-4e84-8e97-ee4af0249c82" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_e60268bd-83eb-4e84-8e97-ee4af0249c82" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_9c30c94a-5daf-4a76-978f-f873fed7c259" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_9c30c94a-5daf-4a76-978f-f873fed7c259" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_e79c96dd-de7f-44de-a05a-c133b3bf00b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_e79c96dd-de7f-44de-a05a-c133b3bf00b1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_e942031b-b2c8-4996-8e1b-63971717d572" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_e942031b-b2c8-4996-8e1b-63971717d572" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_4a23b95e-869a-4621-8626-c3b9f83aa344" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_4a23b95e-869a-4621-8626-c3b9f83aa344" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_2e60b289-fbbd-400d-9ac5-30f7a6227a2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_2e60b289-fbbd-400d-9ac5-30f7a6227a2f" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_f7c7e57e-84dc-4cf2-ad92-389516fb951c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_f7c7e57e-84dc-4cf2-ad92-389516fb951c" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_df7b7b86-1c48-4bb0-8a1c-24c798a64808" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_df7b7b86-1c48-4bb0-8a1c-24c798a64808" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_82f78e75-2680-4ad2-8bb2-8fa659f32b01" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfGoodwillTextBlock_82f78e75-2680-4ad2-8bb2-8fa659f32b01" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock_65f22b95-f4fe-4d68-b136-7cdb6f6c14cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock_65f22b95-f4fe-4d68-b136-7cdb6f6c14cf" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_9c8be1a8-ce26-43dc-9e1a-c9e48b6cb3f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_9c8be1a8-ce26-43dc-9e1a-c9e48b6cb3f0" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_226b8cf6-9580-436a-b6b7-4da1f1e5166b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_226b8cf6-9580-436a-b6b7-4da1f1e5166b" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_b2073fbe-ee30-483a-aea3-f2882906e1f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d1a24181-50a6-472d-9ae0-0120f297c860" xlink:to="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_b2073fbe-ee30-483a-aea3-f2882906e1f1" xlink:type="arc" order="12"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESpropertyplantandequipmentandleasesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESpropertyplantandequipmentandleasesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESpropertyplantandequipmentandleasesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1367e140-8cb0-40de-be3e-70e4b0fd9f65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dd963e28-ba40-4b35-92c3-bb7f3b2d8d2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1367e140-8cb0-40de-be3e-70e4b0fd9f65" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dd963e28-ba40-4b35-92c3-bb7f3b2d8d2a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c9ef7fd9-7712-4d86-a115-0ca866dd82cc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dd963e28-ba40-4b35-92c3-bb7f3b2d8d2a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c9ef7fd9-7712-4d86-a115-0ca866dd82cc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_c9ef7fd9-7712-4d86-a115-0ca866dd82cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c9ef7fd9-7712-4d86-a115-0ca866dd82cc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_c9ef7fd9-7712-4d86-a115-0ca866dd82cc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4055f2e4-ad48-487d-bdd3-160a92eca02a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c9ef7fd9-7712-4d86-a115-0ca866dd82cc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4055f2e4-ad48-487d-bdd3-160a92eca02a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_62cc685f-8882-4f60-8fe7-abde33b88ea6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BuildingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4055f2e4-ad48-487d-bdd3-160a92eca02a" xlink:to="loc_us-gaap_BuildingMember_62cc685f-8882-4f60-8fe7-abde33b88ea6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_5c170b65-bd06-4f67-8ebf-c74b7477bb3b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MachineryAndEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4055f2e4-ad48-487d-bdd3-160a92eca02a" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_5c170b65-bd06-4f67-8ebf-c74b7477bb3b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_90c41aa6-0098-4511-8506-d354c890398a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dd963e28-ba40-4b35-92c3-bb7f3b2d8d2a" xlink:to="loc_srt_RangeAxis_90c41aa6-0098-4511-8506-d354c890398a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_90c41aa6-0098-4511-8506-d354c890398a_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_90c41aa6-0098-4511-8506-d354c890398a" xlink:to="loc_srt_RangeMember_90c41aa6-0098-4511-8506-d354c890398a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_98a7fb84-2520-4bc8-917e-056edabd9ea3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_90c41aa6-0098-4511-8506-d354c890398a" xlink:to="loc_srt_RangeMember_98a7fb84-2520-4bc8-917e-056edabd9ea3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_26f1d8f6-073f-44a2-bdf6-7ded3156bb50" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_98a7fb84-2520-4bc8-917e-056edabd9ea3" xlink:to="loc_srt_MinimumMember_26f1d8f6-073f-44a2-bdf6-7ded3156bb50" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_9a1436ff-7f7c-4cea-a4f0-8eae059274c9" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_98a7fb84-2520-4bc8-917e-056edabd9ea3" xlink:to="loc_srt_MaximumMember_9a1436ff-7f7c-4cea-a4f0-8eae059274c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_6803e0bb-e7ed-40d7-a350-354b9c6cb865" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_WeightedAverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_98a7fb84-2520-4bc8-917e-056edabd9ea3" xlink:to="loc_srt_WeightedAverageMember_6803e0bb-e7ed-40d7-a350-354b9c6cb865" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_b87d237c-e8fb-4f31-886e-29a4a4805454" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1367e140-8cb0-40de-be3e-70e4b0fd9f65" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_b87d237c-e8fb-4f31-886e-29a4a4805454" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ShortTermLeaseTerm_2fa6779b-bc3d-4edf-83ea-8db6e7b650ca" xlink:href="dlx-20231231.xsd#dlx_ShortTermLeaseTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1367e140-8cb0-40de-be3e-70e4b0fd9f65" xlink:to="loc_dlx_ShortTermLeaseTerm_2fa6779b-bc3d-4edf-83ea-8db6e7b650ca" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESintangiblesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESintangiblesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESintangiblesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_26c34388-6160-4897-b288-13bbdd3c5bcc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d0e835de-7302-43fd-b863-b5e31e0d235a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_26c34388-6160-4897-b288-13bbdd3c5bcc" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d0e835de-7302-43fd-b863-b5e31e0d235a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_526970d1-d997-4244-8a73-1fb3456013d1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d0e835de-7302-43fd-b863-b5e31e0d235a" xlink:to="loc_srt_RangeAxis_526970d1-d997-4244-8a73-1fb3456013d1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_526970d1-d997-4244-8a73-1fb3456013d1_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_526970d1-d997-4244-8a73-1fb3456013d1" xlink:to="loc_srt_RangeMember_526970d1-d997-4244-8a73-1fb3456013d1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3e1ba2bb-a25a-4d2b-93ba-6aba49f980a4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_526970d1-d997-4244-8a73-1fb3456013d1" xlink:to="loc_srt_RangeMember_3e1ba2bb-a25a-4d2b-93ba-6aba49f980a4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_85147769-48eb-40f8-9973-4f6ca31e7987" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3e1ba2bb-a25a-4d2b-93ba-6aba49f980a4" xlink:to="loc_srt_MinimumMember_85147769-48eb-40f8-9973-4f6ca31e7987" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ef4e6fcf-b5db-4c45-bb92-853e3a52479e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3e1ba2bb-a25a-4d2b-93ba-6aba49f980a4" xlink:to="loc_srt_MaximumMember_ef4e6fcf-b5db-4c45-bb92-853e3a52479e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_cc772c32-4608-4930-9515-ec76dbd7d915" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_WeightedAverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3e1ba2bb-a25a-4d2b-93ba-6aba49f980a4" xlink:to="loc_srt_WeightedAverageMember_cc772c32-4608-4930-9515-ec76dbd7d915" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_834f2957-222c-425c-aced-ffbd33c3d124" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_26c34388-6160-4897-b288-13bbdd3c5bcc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_834f2957-222c-425c-aced-ffbd33c3d124" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESbusinesscombinationsandprepaidproductdiscountsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESbusinesscombinationsandprepaidproductdiscountsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESbusinesscombinationsandprepaidproductdiscountsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_dlx_PrepaidproductdiscountsLineItems_d4b6151b-0a4a-40da-aa12-9abf817ef0ad" xlink:href="dlx-20231231.xsd#dlx_PrepaidproductdiscountsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PrepaidproductdiscountsTable_f31078fe-8737-4456-ba2a-f1c866b77e04" xlink:href="dlx-20231231.xsd#dlx_PrepaidproductdiscountsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dlx_PrepaidproductdiscountsLineItems_d4b6151b-0a4a-40da-aa12-9abf817ef0ad" xlink:to="loc_dlx_PrepaidproductdiscountsTable_f31078fe-8737-4456-ba2a-f1c866b77e04" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dlx_PrepaidproductdiscountsTable_f31078fe-8737-4456-ba2a-f1c866b77e04" xlink:to="loc_srt_RangeAxis_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af" xlink:to="loc_srt_RangeMember_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_00cb943d-2f21-47e9-ad42-ac9efa568fa2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_9382b7bd-96b4-4ea3-b6b8-f149d6c8f5af" xlink:to="loc_srt_RangeMember_00cb943d-2f21-47e9-ad42-ac9efa568fa2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_83650923-fc0b-4a5e-9d64-96504728f387" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_00cb943d-2f21-47e9-ad42-ac9efa568fa2" xlink:to="loc_srt_MinimumMember_83650923-fc0b-4a5e-9d64-96504728f387" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c6494c31-a9d7-487f-8fdd-3f662945d2b0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_00cb943d-2f21-47e9-ad42-ac9efa568fa2" xlink:to="loc_srt_MaximumMember_c6494c31-a9d7-487f-8fdd-3f662945d2b0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_5e61bedb-14b0-4b8f-b820-a26ed7fe27af" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_WeightedAverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_00cb943d-2f21-47e9-ad42-ac9efa568fa2" xlink:to="loc_srt_WeightedAverageMember_5e61bedb-14b0-4b8f-b820-a26ed7fe27af" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Amortizationperiodprepaidproductdiscounts_9019a48a-1e07-41e9-a40b-0ba5e299d5f6" xlink:href="dlx-20231231.xsd#dlx_Amortizationperiodprepaidproductdiscounts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dlx_PrepaidproductdiscountsLineItems_d4b6151b-0a4a-40da-aa12-9abf817ef0ad" xlink:to="loc_dlx_Amortizationperiodprepaidproductdiscounts_9019a48a-1e07-41e9-a40b-0ba5e299d5f6" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESloansandnotesreceivablefromdistributorsandadvertisingcostsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESloansandnotesreceivablefromdistributorsandadvertisingcostsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESloansandnotesreceivablefromdistributorsandadvertisingcostsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_192dc412-3e5d-4717-b6b4-866776effcd0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_03e35eec-c5a8-4854-a18f-59b4c4cb7536" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_192dc412-3e5d-4717-b6b4-866776effcd0" xlink:to="loc_us-gaap_StatementTable_03e35eec-c5a8-4854-a18f-59b4c4cb7536" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_03e35eec-c5a8-4854-a18f-59b4c4cb7536" xlink:to="loc_srt_RangeAxis_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0" xlink:to="loc_srt_RangeMember_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_bde22167-16fd-437a-880b-e2145061eedd" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_09fc27fb-c1ed-4513-86e6-11ad3f35d3e0" xlink:to="loc_srt_RangeMember_bde22167-16fd-437a-880b-e2145061eedd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_055f41a9-0d06-4d3e-beb3-8066ada5988c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_bde22167-16fd-437a-880b-e2145061eedd" xlink:to="loc_srt_MinimumMember_055f41a9-0d06-4d3e-beb3-8066ada5988c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4e3e4ff0-203d-4b25-9ec0-d7b0847c8d3f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_bde22167-16fd-437a-880b-e2145061eedd" xlink:to="loc_srt_MaximumMember_4e3e4ff0-203d-4b25-9ec0-d7b0847c8d3f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InterestRateLoansAndNotesReceivable_1983368f-f765-4e7c-9ada-56cba242de7b" xlink:href="dlx-20231231.xsd#dlx_InterestRateLoansAndNotesReceivable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_192dc412-3e5d-4717-b6b4-866776effcd0" xlink:to="loc_dlx_InterestRateLoansAndNotesReceivable_1983368f-f765-4e7c-9ada-56cba242de7b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingAndAdvertisingExpenseAbstract_3c03bbfb-f5c1-44c4-8003-b97faad4c15b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MarketingAndAdvertisingExpenseAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_192dc412-3e5d-4717-b6b4-866776effcd0" xlink:to="loc_us-gaap_MarketingAndAdvertisingExpenseAbstract_3c03bbfb-f5c1-44c4-8003-b97faad4c15b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_950264b3-2aba-49c8-844b-00ce335a31c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdvertisingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MarketingAndAdvertisingExpenseAbstract_3c03bbfb-f5c1-44c4-8003-b97faad4c15b" xlink:to="loc_us-gaap_AdvertisingExpense_950264b3-2aba-49c8-844b-00ce335a31c6" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESincometaxesrevenuerecognitionDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESincometaxesrevenuerecognitionDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESincometaxesrevenuerecognitionDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_1d33b532-08f2-49b3-baa5-e130309b607d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_us-gaap_StatementTable_1d33b532-08f2-49b3-baa5-e130309b607d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_59518c6b-2393-4338-b0eb-7f1cd4146a32" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1d33b532-08f2-49b3-baa5-e130309b607d" xlink:to="loc_srt_ProductOrServiceAxis_59518c6b-2393-4338-b0eb-7f1cd4146a32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_59518c6b-2393-4338-b0eb-7f1cd4146a32_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_59518c6b-2393-4338-b0eb-7f1cd4146a32" xlink:to="loc_srt_ProductsAndServicesDomain_59518c6b-2393-4338-b0eb-7f1cd4146a32_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a6095a61-4873-46fc-8280-734b5c99b0e7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_59518c6b-2393-4338-b0eb-7f1cd4146a32" xlink:to="loc_srt_ProductsAndServicesDomain_a6095a61-4873-46fc-8280-734b5c99b0e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DatadrivenmarketingandtreasurymanagementsolutionsMember_5f1464ff-eb92-489b-b2c9-56429ee77c85" xlink:href="dlx-20231231.xsd#dlx_DatadrivenmarketingandtreasurymanagementsolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a6095a61-4873-46fc-8280-734b5c99b0e7" xlink:to="loc_dlx_DatadrivenmarketingandtreasurymanagementsolutionsMember_5f1464ff-eb92-489b-b2c9-56429ee77c85" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c5a924fc-0ea2-487b-8c7e-c1b822e4024c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1d33b532-08f2-49b3-baa5-e130309b607d" xlink:to="loc_srt_RangeAxis_c5a924fc-0ea2-487b-8c7e-c1b822e4024c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c5a924fc-0ea2-487b-8c7e-c1b822e4024c_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c5a924fc-0ea2-487b-8c7e-c1b822e4024c" xlink:to="loc_srt_RangeMember_c5a924fc-0ea2-487b-8c7e-c1b822e4024c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_fb6862e5-0abc-4c65-bd1e-0a6bc8fc546e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c5a924fc-0ea2-487b-8c7e-c1b822e4024c" xlink:to="loc_srt_RangeMember_fb6862e5-0abc-4c65-bd1e-0a6bc8fc546e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_312f60b8-d2a4-48aa-9ed9-833577374c4d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_fb6862e5-0abc-4c65-bd1e-0a6bc8fc546e" xlink:to="loc_srt_MinimumMember_312f60b8-d2a4-48aa-9ed9-833577374c4d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_9ae49f0a-5d2f-4777-b16f-826db83f0568" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_fb6862e5-0abc-4c65-bd1e-0a6bc8fc546e" xlink:to="loc_srt_MaximumMember_9ae49f0a-5d2f-4777-b16f-826db83f0568" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Variableconsiderationperiodoverwhichfinalized_7f2d51c5-409b-4df9-a3ea-061844e06d6d" xlink:href="dlx-20231231.xsd#dlx_Variableconsiderationperiodoverwhichfinalized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_dlx_Variableconsiderationperiodoverwhichfinalized_7f2d51c5-409b-4df9-a3ea-061844e06d6d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Deferredrevenueperiodoverwhichrecognized_5a1422b0-2359-409f-b4fa-80b23cf30b77" xlink:href="dlx-20231231.xsd#dlx_Deferredrevenueperiodoverwhichrecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_dlx_Deferredrevenueperiodoverwhichrecognized_5a1422b0-2359-409f-b4fa-80b23cf30b77" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_af387c63-feff-4dbf-aff3-ecdb9f6a5b1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_af387c63-feff-4dbf-aff3-ecdb9f6a5b1d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_255934f0-66c2-45eb-8530-33134759c97e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_255934f0-66c2-45eb-8530-33134759c97e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ContractCostsPracticalExpedientPeriod_bfc026f3-1241-48f2-bf3f-1ef4f021043a" xlink:href="dlx-20231231.xsd#dlx_ContractCostsPracticalExpedientPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a3ebfacd-fdb3-4ee6-8410-683efd031885" xlink:to="loc_dlx_ContractCostsPracticalExpedientPeriod_bfc026f3-1241-48f2-bf3f-1ef4f021043a" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESemployeesharebasedcompensationDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SIGNIFICANTACCOUNTINGPOLICIESemployeesharebasedcompensationDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SIGNIFICANTACCOUNTINGPOLICIESemployeesharebasedcompensationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_1b5e16ea-9b25-4f0e-a1e3-cfc7c31d4023" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8561f2b3-7db9-480d-b90b-6b472ec3bfd4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_1b5e16ea-9b25-4f0e-a1e3-cfc7c31d4023" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8561f2b3-7db9-480d-b90b-6b472ec3bfd4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_dee961cc-d8d6-43ad-8f77-516442343401" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8561f2b3-7db9-480d-b90b-6b472ec3bfd4" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_dee961cc-d8d6-43ad-8f77-516442343401" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_dee961cc-d8d6-43ad-8f77-516442343401_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_dee961cc-d8d6-43ad-8f77-516442343401" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_dee961cc-d8d6-43ad-8f77-516442343401_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_1ea14a10-f7ee-4c6f-b34f-b179b7857d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_dee961cc-d8d6-43ad-8f77-516442343401" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_1ea14a10-f7ee-4c6f-b34f-b179b7857d9b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_3ad53d79-d947-47b1-8910-0bf35af85bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_1ea14a10-f7ee-4c6f-b34f-b179b7857d9b" xlink:to="loc_us-gaap_EmployeeStockMember_3ad53d79-d947-47b1-8910-0bf35af85bf4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_718f2ee6-28f0-444b-8f37-d0420bbc4661" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_1b5e16ea-9b25-4f0e-a1e3-cfc7c31d4023" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_718f2ee6-28f0-444b-8f37-d0420bbc4661" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_39fe95e1-587d-4e5a-9d2f-ea5f32f1243f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_1b5e16ea-9b25-4f0e-a1e3-cfc7c31d4023" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_39fe95e1-587d-4e5a-9d2f-ea5f32f1243f" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONinventoriesandsuppliesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONinventoriesandsuppliesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONinventoriesandsuppliesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_ea1cc50a-c065-49c9-960c-19fa71a68e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_35341766-20e8-430f-b946-22e87244832c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_ea1cc50a-c065-49c9-960c-19fa71a68e0b" xlink:to="loc_us-gaap_StatementTable_35341766-20e8-430f-b946-22e87244832c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_0eb8e5b9-e932-49a5-8804-b494dd0a38a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_35341766-20e8-430f-b946-22e87244832c" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_0eb8e5b9-e932-49a5-8804-b494dd0a38a5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0eb8e5b9-e932-49a5-8804-b494dd0a38a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0eb8e5b9-e932-49a5-8804-b494dd0a38a5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0eb8e5b9-e932-49a5-8804-b494dd0a38a5_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_86d25136-669f-4e07-b004-36c157580b5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0eb8e5b9-e932-49a5-8804-b494dd0a38a5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_86d25136-669f-4e07-b004-36c157580b5c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserveMember_df1c0d33-5b76-453a-a751-d603b7d61757" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryValuationReserveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_86d25136-669f-4e07-b004-36c157580b5c" xlink:to="loc_us-gaap_InventoryValuationReserveMember_df1c0d33-5b76-453a-a751-d603b7d61757" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryDisclosureAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ea1cc50a-c065-49c9-960c-19fa71a68e0b" xlink:to="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcess_56b5e751-d662-4720-a362-65c8c37a19b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryFinishedGoodsAndWorkInProcess"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:to="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcess_56b5e751-d662-4720-a362-65c8c37a19b8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_bd87eb6d-f14f-46cc-b75d-d1f021e3c6f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryRawMaterialsAndSupplies"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSupplies_bd87eb6d-f14f-46cc-b75d-d1f021e3c6f8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserves_da68a84d-f481-4791-a038-b9d7f403face" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryValuationReserves"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:to="loc_us-gaap_InventoryValuationReserves_da68a84d-f481-4791-a038-b9d7f403face" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_ed98e3e5-cfc7-4523-8cc2-2a62916a0f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_557d1551-b1e0-467f-b3a7-8e0e147233dc" xlink:to="loc_us-gaap_InventoryNet_ed98e3e5-cfc7-4523-8cc2-2a62916a0f8a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_da625a50-9ca4-4348-944e-d2c35b0439f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ea1cc50a-c065-49c9-960c-19fa71a68e0b" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_da625a50-9ca4-4348-944e-d2c35b0439f8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserves_22e42c44-8e22-4592-85d5-b0d0db0185c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryValuationReserves"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_aca367d7-1602-4e30-bf5c-651c095ae5a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_da625a50-9ca4-4348-944e-d2c35b0439f8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_aca367d7-1602-4e30-bf5c-651c095ae5a3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_07a9ac4f-1c48-458c-842e-5dc8a47c2027" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesDeductions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_da625a50-9ca4-4348-944e-d2c35b0439f8" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_07a9ac4f-1c48-458c-842e-5dc8a47c2027" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserves_c6b4dbaa-0384-48ba-a94c-16f36b2ab4fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryValuationReserves"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONavailableforsaledebtsecuritiesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONavailableforsaledebtsecuritiesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONavailableforsaledebtsecuritiesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesTable_c6b7fae6-2040-4be6-9bc0-2acab452dd73" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MarketableSecuritiesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_MarketableSecuritiesTable_c6b7fae6-2040-4be6-9bc0-2acab452dd73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_e42996b7-3a25-4159-a5d6-f001c8abbe90" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MarketableSecuritiesTable_c6b7fae6-2040-4be6-9bc0-2acab452dd73" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_e42996b7-3a25-4159-a5d6-f001c8abbe90" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_e42996b7-3a25-4159-a5d6-f001c8abbe90_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_e42996b7-3a25-4159-a5d6-f001c8abbe90" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_e42996b7-3a25-4159-a5d6-f001c8abbe90_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_d954cc3e-0198-410a-9c8c-ee8f56af572f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_e42996b7-3a25-4159-a5d6-f001c8abbe90" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_d954cc3e-0198-410a-9c8c-ee8f56af572f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_23e1824a-cb6b-4302-ab7e-fd1136ff4231" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_d954cc3e-0198-410a-9c8c-ee8f56af572f" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_23e1824a-cb6b-4302-ab7e-fd1136ff4231" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FundsHeldForCustomersMember_073483cb-793d-4dc3-b753-d1d48a8e49ed" xlink:href="dlx-20231231.xsd#dlx_FundsHeldForCustomersMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_d954cc3e-0198-410a-9c8c-ee8f56af572f" xlink:to="loc_dlx_FundsHeldForCustomersMember_073483cb-793d-4dc3-b753-d1d48a8e49ed" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MarketableSecuritiesTable_c6b7fae6-2040-4be6-9bc0-2acab452dd73" xlink:to="loc_us-gaap_FinancialInstrumentAxis_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6c05f29-ddff-441e-bbc8-5be15ea6c36f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_d3dc2fcf-27f5-4cb8-875a-a5a93a4258b9" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6c05f29-ddff-441e-bbc8-5be15ea6c36f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_2f7ddd8c-8016-4f59-a959-60e648ed807a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6c05f29-ddff-441e-bbc8-5be15ea6c36f" xlink:to="loc_us-gaap_MoneyMarketFundsMember_2f7ddd8c-8016-4f59-a959-60e648ed807a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_17182de2-99b5-4aeb-889f-753cb5f54c5e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6c05f29-ddff-441e-bbc8-5be15ea6c36f" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_17182de2-99b5-4aeb-889f-753cb5f54c5e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionAxis_a0217d17-8508-418a-9e11-be95e0a50264" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MarketableSecuritiesTable_c6b7fae6-2040-4be6-9bc0-2acab452dd73" xlink:to="loc_us-gaap_GeographicDistributionAxis_a0217d17-8508-418a-9e11-be95e0a50264" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_a0217d17-8508-418a-9e11-be95e0a50264_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_a0217d17-8508-418a-9e11-be95e0a50264" xlink:to="loc_us-gaap_GeographicDistributionDomain_a0217d17-8508-418a-9e11-be95e0a50264_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_c8809ab3-fef7-4dd8-bb08-76998c1344d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_a0217d17-8508-418a-9e11-be95e0a50264" xlink:to="loc_us-gaap_GeographicDistributionDomain_c8809ab3-fef7-4dd8-bb08-76998c1344d1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomesticMember_9ef3f25f-0f81-4d22-b4a5-426aa5f191ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionDomesticMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_c8809ab3-fef7-4dd8-bb08-76998c1344d1" xlink:to="loc_us-gaap_GeographicDistributionDomesticMember_9ef3f25f-0f81-4d22-b4a5-426aa5f191ed" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_213ce140-16ea-426f-a9f6-052c77cc7915" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_213ce140-16ea-426f-a9f6-052c77cc7915" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_b8e662ab-0ba0-4877-9d13-f32444d76b6e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_b8e662ab-0ba0-4877-9d13-f32444d76b6e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_714a3212-c7ca-4fe8-b28d-2bd1cd4c41dd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_714a3212-c7ca-4fe8-b28d-2bd1cd4c41dd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9a55b0eb-7e67-47cb-a59b-f1e013eca84e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9a55b0eb-7e67-47cb-a59b-f1e013eca84e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_4a64772f-367d-45f7-9343-e3e0469bce3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Cash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_732331d1-6423-41ab-9b1e-112353e2943d" xlink:to="loc_us-gaap_Cash_4a64772f-367d-45f7-9343-e3e0469bce3f" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONpropertyplantandequipmentDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONpropertyplantandequipmentDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONpropertyplantandequipmentDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7e8fe0ca-2aa9-4190-96ba-9ea12e5961d7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_275d34d4-3bb5-40db-90f7-a367f89feae5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7e8fe0ca-2aa9-4190-96ba-9ea12e5961d7" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_275d34d4-3bb5-40db-90f7-a367f89feae5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0ac66122-8dc4-433b-8ecf-b2617e68c21c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_275d34d4-3bb5-40db-90f7-a367f89feae5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0ac66122-8dc4-433b-8ecf-b2617e68c21c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0ac66122-8dc4-433b-8ecf-b2617e68c21c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0ac66122-8dc4-433b-8ecf-b2617e68c21c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0ac66122-8dc4-433b-8ecf-b2617e68c21c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d22cfb03-fcec-4875-bc9e-f6dc606d6294" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0ac66122-8dc4-433b-8ecf-b2617e68c21c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d22cfb03-fcec-4875-bc9e-f6dc606d6294" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_e54c5032-ac17-4b36-8955-5832dfbfd5c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MachineryAndEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d22cfb03-fcec-4875-bc9e-f6dc606d6294" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_e54c5032-ac17-4b36-8955-5832dfbfd5c2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_5cd0cb68-f48c-4441-9a34-a14f177078e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d22cfb03-fcec-4875-bc9e-f6dc606d6294" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_5cd0cb68-f48c-4441-9a34-a14f177078e8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_b008fd05-392d-4db9-b23d-969d4fa7a2a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LandAndLandImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d22cfb03-fcec-4875-bc9e-f6dc606d6294" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_b008fd05-392d-4db9-b23d-969d4fa7a2a0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_6bd47f5c-6d69-4aa5-b598-d5cb934d8d52" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7e8fe0ca-2aa9-4190-96ba-9ea12e5961d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_6bd47f5c-6d69-4aa5-b598-d5cb934d8d52" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_0cac68cf-fb92-4f85-98e8-a4df9afa78c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7e8fe0ca-2aa9-4190-96ba-9ea12e5961d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_0cac68cf-fb92-4f85-98e8-a4df9afa78c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_add2d805-14ef-47ab-a119-f6349866f440" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7e8fe0ca-2aa9-4190-96ba-9ea12e5961d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_add2d805-14ef-47ab-a119-f6349866f440" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONintangiblesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONintangiblesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONintangiblesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_c34ec740-383a-433c-a8f6-af55ce7e5620" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_c34ec740-383a-433c-a8f6-af55ce7e5620" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_822d409c-9247-4eb8-a025-aeea6682b842" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_c34ec740-383a-433c-a8f6-af55ce7e5620" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_822d409c-9247-4eb8-a025-aeea6682b842" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_822d409c-9247-4eb8-a025-aeea6682b842_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_822d409c-9247-4eb8-a025-aeea6682b842" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_822d409c-9247-4eb8-a025-aeea6682b842_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_822d409c-9247-4eb8-a025-aeea6682b842" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InternaluseComputerSoftwareIntangibleAssetMember_fe68c28a-0aab-4828-aa8e-8da0187c95bf" xlink:href="dlx-20231231.xsd#dlx_InternaluseComputerSoftwareIntangibleAssetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_dlx_InternaluseComputerSoftwareIntangibleAssetMember_fe68c28a-0aab-4828-aa8e-8da0187c95bf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_0701041b-524d-4a9c-9efd-c4ee8fe3be74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CustomerRelatedIntangibleAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_0701041b-524d-4a9c-9efd-c4ee8fe3be74" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_7318145c-7fc8-44c1-90fa-668b081713d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_7318145c-7fc8-44c1-90fa-668b081713d5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DistributionRightsMember_ee0ad46a-3123-40ab-b3d4-25ceb2d9072b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DistributionRightsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_us-gaap_DistributionRightsMember_ee0ad46a-3123-40ab-b3d4-25ceb2d9072b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_e63aa617-df9b-4b5d-ac2c-f5e577229ada" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeNamesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_us-gaap_TradeNamesMember_e63aa617-df9b-4b5d-ac2c-f5e577229ada" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_SoftwareforResaleMember_8e60969b-dd89-4fb9-a16d-fd15dd5d30b2" xlink:href="dlx-20231231.xsd#dlx_SoftwareforResaleMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_37e428d8-ac0e-41c7-bb8e-ac8a0782b08f" xlink:to="loc_dlx_SoftwareforResaleMember_8e60969b-dd89-4fb9-a16d-fd15dd5d30b2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6c09eef4-ba15-4bd5-bf65-c92f796db861" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6c09eef4-ba15-4bd5-bf65-c92f796db861" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_99ba9082-ca8b-4348-800b-34d005d92b92" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_99ba9082-ca8b-4348-800b-34d005d92b92" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_d9cf55af-0135-41b5-81f7-4dc3dca18cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_d9cf55af-0135-41b5-81f7-4dc3dca18cdd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_d9b3004d-5537-4028-8490-f71355caee7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentForAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_AdjustmentForAmortization_d9b3004d-5537-4028-8490-f71355caee7b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_fca98598-d1f6-4740-b9a1-c51e87cc1b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_fca98598-d1f6-4740-b9a1-c51e87cc1b8e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_2bfa7e75-be2e-4c56-9ce6-bc04c9c47f14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_2bfa7e75-be2e-4c56-9ce6-bc04c9c47f14" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_748f3a32-c409-4dda-81fd-c18a2d9a8f99" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_0b9b29f6-ea2f-4a5f-8b25-6eeefe2b81f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_0b9b29f6-ea2f-4a5f-8b25-6eeefe2b81f5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_508ee469-64f1-41bf-bdc3-53b074c517f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_508ee469-64f1-41bf-bdc3-53b074c517f9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_77ddfa76-326d-42f3-9c95-0f1b248ecef1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_77ddfa76-326d-42f3-9c95-0f1b248ecef1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_4f815865-6c3f-495f-b7b2-295228948c26" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_4f815865-6c3f-495f-b7b2-295228948c26" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_8222f090-0045-4b85-b94c-2c4093b72429" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_300213b6-c25d-48f1-b8ad-d0bebfa0a8cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_8222f090-0045-4b85-b94c-2c4093b72429" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONgoodwillDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONgoodwillDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONgoodwillDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_7c422701-d1e6-43f9-9947-7fee1440da95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_e482ea3d-2dcf-4382-89f6-56585debc0db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_7c422701-d1e6-43f9-9947-7fee1440da95" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_e482ea3d-2dcf-4382-89f6-56585debc0db" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_ccecbef8-5916-450d-a023-8f4ad5a6d2c6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_e482ea3d-2dcf-4382-89f6-56585debc0db" xlink:to="loc_srt_ConsolidationItemsAxis_ccecbef8-5916-450d-a023-8f4ad5a6d2c6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_ccecbef8-5916-450d-a023-8f4ad5a6d2c6_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_ccecbef8-5916-450d-a023-8f4ad5a6d2c6" xlink:to="loc_srt_ConsolidationItemsDomain_ccecbef8-5916-450d-a023-8f4ad5a6d2c6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_17c5a573-2467-4fa4-9b04-689ab9560092" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_ccecbef8-5916-450d-a023-8f4ad5a6d2c6" xlink:to="loc_srt_ConsolidationItemsDomain_17c5a573-2467-4fa4-9b04-689ab9560092" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_48c3a89e-53b7-4d1f-a6c0-987418af6402" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_17c5a573-2467-4fa4-9b04-689ab9560092" xlink:to="loc_us-gaap_OperatingSegmentsMember_48c3a89e-53b7-4d1f-a6c0-987418af6402" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_4131e497-c854-469f-bf30-67677f7e0ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_e482ea3d-2dcf-4382-89f6-56585debc0db" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_4131e497-c854-469f-bf30-67677f7e0ef9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_4131e497-c854-469f-bf30-67677f7e0ef9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4131e497-c854-469f-bf30-67677f7e0ef9" xlink:to="loc_us-gaap_SegmentDomain_4131e497-c854-469f-bf30-67677f7e0ef9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4131e497-c854-469f-bf30-67677f7e0ef9" xlink:to="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PaymentsMember_750a6d00-3033-4343-b135-51cac04ce997" xlink:href="dlx-20231231.xsd#dlx_PaymentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:to="loc_dlx_PaymentsMember_750a6d00-3033-4343-b135-51cac04ce997" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DataSolutionsMember_b3dbf586-78c7-4155-8cd4-317cc8bfa8cf" xlink:href="dlx-20231231.xsd#dlx_DataSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:to="loc_dlx_DataSolutionsMember_b3dbf586-78c7-4155-8cd4-317cc8bfa8cf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsMember_ab8be11d-ec16-4241-aa5c-8a276b4182c0" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:to="loc_dlx_PromotionalSolutionsMember_ab8be11d-ec16-4241-aa5c-8a276b4182c0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ChecksMember_e66a635c-fe60-4f41-b0bc-0b53b2d153ed" xlink:href="dlx-20231231.xsd#dlx_ChecksMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_318d1b0a-4354-4e5d-9145-28ddeaf81dc3" xlink:to="loc_dlx_ChecksMember_e66a635c-fe60-4f41-b0bc-0b53b2d153ed" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_a2b9d961-c025-42d1-a5f1-e459c506e9b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_7c422701-d1e6-43f9-9947-7fee1440da95" xlink:to="loc_us-gaap_GoodwillRollForward_a2b9d961-c025-42d1-a5f1-e459c506e9b1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_19c5fc48-fc83-4b0d-939c-9b52abc1cb16" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_a2b9d961-c025-42d1-a5f1-e459c506e9b1" xlink:to="loc_us-gaap_Goodwill_19c5fc48-fc83-4b0d-939c-9b52abc1cb16" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_4da1e3cd-07d0-4a1d-bf06-161b955dd1ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_a2b9d961-c025-42d1-a5f1-e459c506e9b1" xlink:to="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_4da1e3cd-07d0-4a1d-bf06-161b955dd1ac" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_4902c0a4-569e-41f6-be0e-bcbb55b209e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_a2b9d961-c025-42d1-a5f1-e459c506e9b1" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_4902c0a4-569e-41f6-be0e-bcbb55b209e4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_3709228e-ee2f-4bd8-85db-f8e2710d3594" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONothernoncurrentassetsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONothernoncurrentassetsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONothernoncurrentassetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_ae2a6aa2-716a-487e-860f-aacee053c73c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_ae2a6aa2-716a-487e-860f-aacee053c73c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_ae2a6aa2-716a-487e-860f-aacee053c73c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_35c031cf-02fb-4fd7-b117-ff3b5d073efe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_cb133f63-8b59-49f9-b0ae-8c1037f8ddfd" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_35c031cf-02fb-4fd7-b117-ff3b5d073efe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_LoansAndNotesReceivableFromDistributorsMember_b8429ac8-0ab4-4e0b-825f-590d90c68646" xlink:href="dlx-20231231.xsd#dlx_LoansAndNotesReceivableFromDistributorsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_35c031cf-02fb-4fd7-b117-ff3b5d073efe" xlink:to="loc_dlx_LoansAndNotesReceivableFromDistributorsMember_b8429ac8-0ab4-4e0b-825f-590d90c68646" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_81dd8c62-a7cf-4d25-8455-77f0eddf53df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InternalCreditAssessmentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_ae2a6aa2-716a-487e-860f-aacee053c73c" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_81dd8c62-a7cf-4d25-8455-77f0eddf53df" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_81dd8c62-a7cf-4d25-8455-77f0eddf53df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InternalCreditAssessmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_81dd8c62-a7cf-4d25-8455-77f0eddf53df" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_81dd8c62-a7cf-4d25-8455-77f0eddf53df_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_d43d40ac-3bf0-42be-b0ed-37559796df78" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InternalCreditAssessmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_81dd8c62-a7cf-4d25-8455-77f0eddf53df" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_d43d40ac-3bf0-42be-b0ed-37559796df78" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_OneToTwoInternalGradeMember_385c2655-bab4-4a44-a76e-fe391f6761eb" xlink:href="dlx-20231231.xsd#dlx_OneToTwoInternalGradeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_d43d40ac-3bf0-42be-b0ed-37559796df78" xlink:to="loc_dlx_OneToTwoInternalGradeMember_385c2655-bab4-4a44-a76e-fe391f6761eb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ThreeToFourInternalGradeMember_b69eadb6-c385-4f5f-b75f-67fa05035b9d" xlink:href="dlx-20231231.xsd#dlx_ThreeToFourInternalGradeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_d43d40ac-3bf0-42be-b0ed-37559796df78" xlink:to="loc_dlx_ThreeToFourInternalGradeMember_b69eadb6-c385-4f5f-b75f-67fa05035b9d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_dbc177b3-0c32-4a7e-9f36-43f2e45b776f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_dbc177b3-0c32-4a7e-9f36-43f2e45b776f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_fb3983a6-41b3-4c08-bde0-63e4138b02cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_fb3983a6-41b3-4c08-bde0-63e4138b02cf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_501bd9eb-5f23-4594-8490-33a87b5b0977" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_501bd9eb-5f23-4594-8490-33a87b5b0977" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FinancingReceivableAllowanceForCreditLossesOtherChange_1391d77f-63ff-4ea5-bf8d-c80f025dc1a2" xlink:href="dlx-20231231.xsd#dlx_FinancingReceivableAllowanceForCreditLossesOtherChange"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_dlx_FinancingReceivableAllowanceForCreditLossesOtherChange_1391d77f-63ff-4ea5-bf8d-c80f025dc1a2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_bf83b04c-89c5-4884-9221-7a72a12ffafe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditQualityInformationAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_c77d14c3-e4e8-4711-9678-7e6965a26257" xlink:to="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_8eb96b24-bee9-4aea-abbb-73284f651855" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_8eb96b24-bee9-4aea-abbb-73284f651855" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_2d453a42-ec16-428f-8aff-6ae77a620527" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_2d453a42-ec16-428f-8aff-6ae77a620527" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_51682657-5f06-4abc-a200-3dfe9a303051" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_51682657-5f06-4abc-a200-3dfe9a303051" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_6b677561-3bfe-4dec-bd27-291b8c46b831" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_6b677561-3bfe-4dec-bd27-291b8c46b831" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_319fbc3c-8241-4852-b185-557dc66d81cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NotesReceivableGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditQualityInformationAbstract_4fc46fe0-784c-4797-a5dd-f7749860cce5" xlink:to="loc_us-gaap_NotesReceivableGross_319fbc3c-8241-4852-b185-557dc66d81cb" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONsupplementalcashflowinformationDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONsupplementalcashflowinformationDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SUPPLEMENTALBALANCESHEETANDCASHFLOWINFORMATIONsupplementalcashflowinformationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_57c8f2d4-eaa4-45e9-9224-ced339fa3549" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_StatementTable_57c8f2d4-eaa4-45e9-9224-ced339fa3549" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_ec2cd45e-0507-4d1f-9a4a-b20195dfa758" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_57c8f2d4-eaa4-45e9-9224-ced339fa3549" xlink:to="loc_us-gaap_AwardTypeAxis_ec2cd45e-0507-4d1f-9a4a-b20195dfa758" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ec2cd45e-0507-4d1f-9a4a-b20195dfa758_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_ec2cd45e-0507-4d1f-9a4a-b20195dfa758" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ec2cd45e-0507-4d1f-9a4a-b20195dfa758_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f4d0e7ee-4996-48ff-b0b2-3387f9e0acff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_ec2cd45e-0507-4d1f-9a4a-b20195dfa758" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f4d0e7ee-4996-48ff-b0b2-3387f9e0acff" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_973d54aa-c902-4eb6-83c7-10928f957bce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f4d0e7ee-4996-48ff-b0b2-3387f9e0acff" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_973d54aa-c902-4eb6-83c7-10928f957bce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_8d2d4dbb-3e9f-450c-b468-7ba4d8b83d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_8d2d4dbb-3e9f-450c-b468-7ba4d8b83d0f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashEquivalentsCurrent_a546b7de-c56b-454a-9815-78e72fe51807" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashEquivalentsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_RestrictedCashEquivalentsCurrent_a546b7de-c56b-454a-9815-78e72fe51807" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashEquivalentsCurrentAssetStatementOfFinancialPositionExtensibleList_2a748120-c671-4cd6-a778-72667037a32c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashEquivalentsCurrentAssetStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_RestrictedCashEquivalentsCurrentAssetStatementOfFinancialPositionExtensibleList_2a748120-c671-4cd6-a778-72667037a32c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_5b348a6d-36e4-4d5e-a16a-6f6a3108143c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_5b348a6d-36e4-4d5e-a16a-6f6a3108143c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrentAssetStatementOfFinancialPositionExtensibleList_2392e024-1b2c-4e03-a371-97db88e0742d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashNoncurrentAssetStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_RestrictedCashNoncurrentAssetStatementOfFinancialPositionExtensibleList_2392e024-1b2c-4e03-a371-97db88e0742d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1848c84b-fd52-4330-84d6-5d9681333d8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1848c84b-fd52-4330-84d6-5d9681333d8a" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_13149e05-4fa8-4d0e-8f65-a2a97086e7a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestPaidNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_InterestPaidNet_13149e05-4fa8-4d0e-8f65-a2a97086e7a1" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaid_f64cdd07-a3ec-464c-8dab-317ead956dad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxesPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_IncomeTaxesPaid_f64cdd07-a3ec-464c-8dab-317ead956dad" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_2e0082ea-dab5-4038-98bf-a56b496ad3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_2e0082ea-dab5-4038-98bf-a56b496ad3d9" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationGiven1_d2949cc7-4964-4053-8f48-8dd4acc714fb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationGiven1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationGiven1_d2949cc7-4964-4053-8f48-8dd4acc714fb" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssued1_33faff69-339e-45f6-a467-f1fa4148e7b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssued1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_19b1b398-9eb9-4953-88b3-1d160f43c710" xlink:to="loc_us-gaap_StockIssued1_33faff69-339e-45f6-a467-f1fa4148e7b4" xlink:type="arc" order="10"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/OTHERCOMPREHENSIVEINCOMELOSSaccumulatedothercomprehensivelossDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#OTHERCOMPREHENSIVEINCOMELOSSaccumulatedothercomprehensivelossDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/OTHERCOMPREHENSIVEINCOMELOSSaccumulatedothercomprehensivelossDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c799ff27-57dc-4a7e-9985-b1828ae6a08c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c799ff27-57dc-4a7e-9985-b1828ae6a08c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_8d0486a8-39ad-43d3-9870-73e30b089fb7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c799ff27-57dc-4a7e-9985-b1828ae6a08c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_8d0486a8-39ad-43d3-9870-73e30b089fb7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_8d0486a8-39ad-43d3-9870-73e30b089fb7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8d0486a8-39ad-43d3-9870-73e30b089fb7" xlink:to="loc_us-gaap_EquityComponentDomain_8d0486a8-39ad-43d3-9870-73e30b089fb7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8d0486a8-39ad-43d3-9870-73e30b089fb7" xlink:to="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_058949c3-a70f-41ee-9bdb-18f6d94a746e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_058949c3-a70f-41ee-9bdb-18f6d94a746e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_17d3dd3f-9135-48bc-b258-7a9ef9b43219" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_17d3dd3f-9135-48bc-b258-7a9ef9b43219" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_aaa0b748-ab45-4842-9802-7614685a7825" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_aaa0b748-ab45-4842-9802-7614685a7825" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_5c57d7ee-6a80-405b-91ca-00005239f25f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e09ecf30-6f52-4bbf-8982-05b00cb2e596" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_5c57d7ee-6a80-405b-91ca-00005239f25f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_526c0fc2-70c5-46f0-9c71-449f7930223d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_526c0fc2-70c5-46f0-9c71-449f7930223d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_f30a57d1-231f-4a35-91a6-acf61bdea420" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_f30a57d1-231f-4a35-91a6-acf61bdea420" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_7eb6ccb1-935e-4da4-89e6-dfa98553f3aa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_7eb6ccb1-935e-4da4-89e6-dfa98553f3aa" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_97b2d9e4-1c98-46b9-a412-0028897d4e19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_baa8ad83-1353-4206-97fd-9b660d367fee" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_97b2d9e4-1c98-46b9-a412-0028897d4e19" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_271eb503-c584-41a7-9ec5-55939364735e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_2a778611-8827-4976-a4cf-e0b0bcb2aca2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/ACQUISITIONANDDIVESTITURESDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#ACQUISITIONANDDIVESTITURESDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/ACQUISITIONANDDIVESTITURESDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_68132a15-1ed4-4051-a497-2290fa7e93ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_68132a15-1ed4-4051-a497-2290fa7e93ac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_68132a15-1ed4-4051-a497-2290fa7e93ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_68132a15-1ed4-4051-a497-2290fa7e93ac" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_68132a15-1ed4-4051-a497-2290fa7e93ac_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_70c0f9af-377e-4af4-9cda-ada587d2397d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_68132a15-1ed4-4051-a497-2290fa7e93ac" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_70c0f9af-377e-4af4-9cda-ada587d2397d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FirstAmericanMember_905fde65-cb85-4fd0-b36a-0f87fb7fa321" xlink:href="dlx-20231231.xsd#dlx_FirstAmericanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_70c0f9af-377e-4af4-9cda-ada587d2397d" xlink:to="loc_dlx_FirstAmericanMember_905fde65-cb85-4fd0-b36a-0f87fb7fa321" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01473a0b-1d79-4f55-b1cb-ebb41e75a992" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:to="loc_srt_ConsolidationItemsAxis_01473a0b-1d79-4f55-b1cb-ebb41e75a992" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01473a0b-1d79-4f55-b1cb-ebb41e75a992_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01473a0b-1d79-4f55-b1cb-ebb41e75a992" xlink:to="loc_srt_ConsolidationItemsDomain_01473a0b-1d79-4f55-b1cb-ebb41e75a992_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_94606d8d-fe86-4ae9-81d0-7ed58f6cd6b5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01473a0b-1d79-4f55-b1cb-ebb41e75a992" xlink:to="loc_srt_ConsolidationItemsDomain_94606d8d-fe86-4ae9-81d0-7ed58f6cd6b5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_f16b85d0-d4cf-4eab-8736-133ab2fee618" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_94606d8d-fe86-4ae9-81d0-7ed58f6cd6b5" xlink:to="loc_us-gaap_OperatingSegmentsMember_f16b85d0-d4cf-4eab-8736-133ab2fee618" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_29d6edff-c2b6-4708-bc28-32e592d37782" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_29d6edff-c2b6-4708-bc28-32e592d37782" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_29d6edff-c2b6-4708-bc28-32e592d37782_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_29d6edff-c2b6-4708-bc28-32e592d37782" xlink:to="loc_us-gaap_SegmentDomain_29d6edff-c2b6-4708-bc28-32e592d37782_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_346ed5cb-4bbc-4bba-a6f9-ebc199e02f0c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_29d6edff-c2b6-4708-bc28-32e592d37782" xlink:to="loc_us-gaap_SegmentDomain_346ed5cb-4bbc-4bba-a6f9-ebc199e02f0c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DataSolutionsMember_2a92ff58-72fd-417d-a797-101e79d29465" xlink:href="dlx-20231231.xsd#dlx_DataSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_346ed5cb-4bbc-4bba-a6f9-ebc199e02f0c" xlink:to="loc_dlx_DataSolutionsMember_2a92ff58-72fd-417d-a797-101e79d29465" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsMember_a839aada-d0a8-4e06-9b7e-bf738a51b9c9" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_346ed5cb-4bbc-4bba-a6f9-ebc199e02f0c" xlink:to="loc_dlx_PromotionalSolutionsMember_a839aada-d0a8-4e06-9b7e-bf738a51b9c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PaymentsMember_771f98dc-3ee0-4659-be97-6508d93adb49" xlink:href="dlx-20231231.xsd#dlx_PaymentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_346ed5cb-4bbc-4bba-a6f9-ebc199e02f0c" xlink:to="loc_dlx_PaymentsMember_771f98dc-3ee0-4659-be97-6508d93adb49" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_d4be1a77-8552-4ef2-8666-b5a368b43b54" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_acfbe908-c8fe-4349-9ffe-9c1223fbbb7f" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_d4be1a77-8552-4ef2-8666-b5a368b43b54" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_d4be1a77-8552-4ef2-8666-b5a368b43b54_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_d4be1a77-8552-4ef2-8666-b5a368b43b54" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_d4be1a77-8552-4ef2-8666-b5a368b43b54_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_d4be1a77-8552-4ef2-8666-b5a368b43b54" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_NorthAmericanWebHostingBusinessMember_c588de63-5970-4fa5-8db9-ec13a093c787" xlink:href="dlx-20231231.xsd#dlx_NorthAmericanWebHostingBusinessMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:to="loc_dlx_NorthAmericanWebHostingBusinessMember_c588de63-5970-4fa5-8db9-ec13a093c787" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_naics_ZZ541214_f701ebaf-2c66-4910-98fd-c6fa11ae6c86" xlink:href="https://xbrl.sec.gov/naics/2023/naics-2023.xsd#naics_ZZ541214"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:to="loc_naics_ZZ541214_f701ebaf-2c66-4910-98fd-c6fa11ae6c86" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_BusinessFacilitiesMember_0a591a0c-deb7-4803-9c62-6621619c3381" xlink:href="dlx-20231231.xsd#dlx_BusinessFacilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:to="loc_dlx_BusinessFacilitiesMember_0a591a0c-deb7-4803-9c62-6621619c3381" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_AustralianWebHostingBusinessMember_2aca859e-1175-419e-9b90-4dcaa89ca996" xlink:href="dlx-20231231.xsd#dlx_AustralianWebHostingBusinessMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:to="loc_dlx_AustralianWebHostingBusinessMember_2aca859e-1175-419e-9b90-4dcaa89ca996" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsBusinessExitsMember_e040fb97-f6cb-4a75-91bd-ee7672847f9c" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsBusinessExitsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_214b4834-7c38-4523-bf1a-8a8a38b169b5" xlink:to="loc_dlx_PromotionalSolutionsBusinessExitsMember_e040fb97-f6cb-4a75-91bd-ee7672847f9c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_d85b1b7c-ef28-4a69-9295-763cc622cc13" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_d85b1b7c-ef28-4a69-9295-763cc622cc13" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_f436ad1b-9f1b-4dae-802d-639fd8e25b63" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_f436ad1b-9f1b-4dae-802d-639fd8e25b63" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_a058057d-f307-468c-b8f9-9c459fce3388" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_Revenues_a058057d-f307-468c-b8f9-9c459fce3388" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_5964bbf4-e7c9-4ded-874e-b34f044fdf3e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_NetIncomeLoss_5964bbf4-e7c9-4ded-874e-b34f044fdf3e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCosts_423b2812-a21d-4a18-b50a-0542ebf6c2d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_RestructuringCosts_423b2812-a21d-4a18-b50a-0542ebf6c2d5" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_c87d57a6-396b-45e9-a2af-7d82689af400" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_c87d57a6-396b-45e9-a2af-7d82689af400" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_33a0e435-74a6-494d-a072-a187594a96b5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_33a0e435-74a6-494d-a072-a187594a96b5" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_e581b8d9-92e4-4e7f-a729-1d24ba393672" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_e581b8d9-92e4-4e7f-a729-1d24ba393672" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_8fe89a4e-bd85-4810-b852-fc4a6f518b03" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_8fe89a4e-bd85-4810-b852-fc4a6f518b03" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_68818db7-f7ab-4658-86f8-d0bf2faee1d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_Goodwill_68818db7-f7ab-4658-86f8-d0bf2faee1d2" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_NumberOfFacilities_934fce91-1429-430e-9e92-c9808ee3190a" xlink:href="dlx-20231231.xsd#dlx_NumberOfFacilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_dlx_NumberOfFacilities_934fce91-1429-430e-9e92-c9808ee3190a" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_5d89b65c-84e9-4b55-b775-c6113a072b8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_712d6f2b-3f0b-4623-bb47-8bc07f0dc23b" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_5d89b65c-84e9-4b55-b775-c6113a072b8a" xlink:type="arc" order="11"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/DERIVATIVEFINANCIALINSTRUMENTSDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#DERIVATIVEFINANCIALINSTRUMENTSDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/DERIVATIVEFINANCIALINSTRUMENTSDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_685efbd1-b4fe-4dd9-b017-3270fe914b18" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:to="loc_us-gaap_DerivativeTable_685efbd1-b4fe-4dd9-b017-3270fe914b18" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_09537017-203d-48cf-92fb-0a18e8e5611a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_685efbd1-b4fe-4dd9-b017-3270fe914b18" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_09537017-203d-48cf-92fb-0a18e8e5611a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_09537017-203d-48cf-92fb-0a18e8e5611a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_09537017-203d-48cf-92fb-0a18e8e5611a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_09537017-203d-48cf-92fb-0a18e8e5611a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_09537017-203d-48cf-92fb-0a18e8e5611a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InterestRateSwapJuly2019Member_9db5fa78-8179-407b-9aba-9993967fb661" xlink:href="dlx-20231231.xsd#dlx_InterestRateSwapJuly2019Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:to="loc_dlx_InterestRateSwapJuly2019Member_9db5fa78-8179-407b-9aba-9993967fb661" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InterestRateSwapSeptember2022Member_1aba6439-c65c-4f40-a7bd-29c55972bc5b" xlink:href="dlx-20231231.xsd#dlx_InterestRateSwapSeptember2022Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:to="loc_dlx_InterestRateSwapSeptember2022Member_1aba6439-c65c-4f40-a7bd-29c55972bc5b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InterestRateSwapMarch2023Member_1a387505-79fa-43a8-9807-3555efbf0a0b" xlink:href="dlx-20231231.xsd#dlx_InterestRateSwapMarch2023Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:to="loc_dlx_InterestRateSwapMarch2023Member_1a387505-79fa-43a8-9807-3555efbf0a0b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_AmortizingInterestRateSwapJune2023Member_11f959d2-d74b-4360-965e-5a4deff693c8" xlink:href="dlx-20231231.xsd#dlx_AmortizingInterestRateSwapJune2023Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_41c140a1-48ae-4ae6-9504-937548692491" xlink:to="loc_dlx_AmortizingInterestRateSwapJune2023Member_11f959d2-d74b-4360-965e-5a4deff693c8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_f7752c71-f8f4-4683-b284-9d75dcb156db" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementScenarioAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_685efbd1-b4fe-4dd9-b017-3270fe914b18" xlink:to="loc_srt_StatementScenarioAxis_f7752c71-f8f4-4683-b284-9d75dcb156db" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_f7752c71-f8f4-4683-b284-9d75dcb156db_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_f7752c71-f8f4-4683-b284-9d75dcb156db" xlink:to="loc_srt_ScenarioUnspecifiedDomain_f7752c71-f8f4-4683-b284-9d75dcb156db_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_fa0353f8-4daf-4604-a7aa-a3d89089303e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_f7752c71-f8f4-4683-b284-9d75dcb156db" xlink:to="loc_srt_ScenarioUnspecifiedDomain_fa0353f8-4daf-4604-a7aa-a3d89089303e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_fd028882-0e9a-4984-913b-b34cd6936a7f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioForecastMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_fa0353f8-4daf-4604-a7aa-a3d89089303e" xlink:to="loc_srt_ScenarioForecastMember_fd028882-0e9a-4984-913b-b34cd6936a7f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_52d81274-cd33-45be-a8a7-de80d9957665" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:to="loc_us-gaap_DerivativeNotionalAmount_52d81274-cd33-45be-a8a7-de80d9957665" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_f52e1891-0f44-4c88-8e02-9715269343aa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFixedInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_f52e1891-0f44-4c88-8e02-9715269343aa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsInHedgesAssetsAtFairValue_cbdcabd5-c3e4-40d3-9b7d-ffa9a6af0457" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsInHedgesAssetsAtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:to="loc_us-gaap_DerivativeInstrumentsInHedgesAssetsAtFairValue_cbdcabd5-c3e4-40d3-9b7d-ffa9a6af0457" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue_b7e71404-22a7-4771-9fc9-20a90000a5ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_539da710-80d6-4edb-b22c-4452106c01e4" xlink:to="loc_us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue_b7e71404-22a7-4771-9fc9-20a90000a5ca" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/FAIRVALUEMEASUREMENTSgoodwillimpairmentanalysesDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#FAIRVALUEMEASUREMENTSgoodwillimpairmentanalysesDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/FAIRVALUEMEASUREMENTSgoodwillimpairmentanalysesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_b6d22c53-9f53-4ff7-9b5e-4b4ebab052f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_b6d22c53-9f53-4ff7-9b5e-4b4ebab052f5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitAxis_7ed1d1b7-465d-4e07-b735-605979e81b86" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_b6d22c53-9f53-4ff7-9b5e-4b4ebab052f5" xlink:to="loc_us-gaap_ReportingUnitAxis_7ed1d1b7-465d-4e07-b735-605979e81b86" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_7ed1d1b7-465d-4e07-b735-605979e81b86_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReportingUnitAxis_7ed1d1b7-465d-4e07-b735-605979e81b86" xlink:to="loc_us-gaap_ReportingUnitDomain_7ed1d1b7-465d-4e07-b735-605979e81b86_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_e69a1569-58ea-4609-819c-b696f833e4a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReportingUnitAxis_7ed1d1b7-465d-4e07-b735-605979e81b86" xlink:to="loc_us-gaap_ReportingUnitDomain_e69a1569-58ea-4609-819c-b696f833e4a6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DataAnalyticsReportingUnitMember_edcc4a15-f9cc-4a0e-a0e7-539a2b2cb13f" xlink:href="dlx-20231231.xsd#dlx_DataAnalyticsReportingUnitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_e69a1569-58ea-4609-819c-b696f833e4a6" xlink:to="loc_dlx_DataAnalyticsReportingUnitMember_edcc4a15-f9cc-4a0e-a0e7-539a2b2cb13f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_0830896e-ed69-407e-9898-bfbe3d2017bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_b6d22c53-9f53-4ff7-9b5e-4b4ebab052f5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_0830896e-ed69-407e-9898-bfbe3d2017bf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0830896e-ed69-407e-9898-bfbe3d2017bf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0830896e-ed69-407e-9898-bfbe3d2017bf" xlink:to="loc_us-gaap_SegmentDomain_0830896e-ed69-407e-9898-bfbe3d2017bf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2bb885be-239f-4f91-8675-b293379eb336" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0830896e-ed69-407e-9898-bfbe3d2017bf" xlink:to="loc_us-gaap_SegmentDomain_2bb885be-239f-4f91-8675-b293379eb336" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PaymentsMember_704a0eea-9f99-4558-80f0-8b8cc7b98567" xlink:href="dlx-20231231.xsd#dlx_PaymentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2bb885be-239f-4f91-8675-b293379eb336" xlink:to="loc_dlx_PaymentsMember_704a0eea-9f99-4558-80f0-8b8cc7b98567" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsMember_56fa30e3-8b74-40c0-864f-46ac3d56140a" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2bb885be-239f-4f91-8675-b293379eb336" xlink:to="loc_dlx_PromotionalSolutionsMember_56fa30e3-8b74-40c0-864f-46ac3d56140a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_7e38a047-6f19-4248-a624-ac60f2c3aaf2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_b6d22c53-9f53-4ff7-9b5e-4b4ebab052f5" xlink:to="loc_srt_ConsolidationItemsAxis_7e38a047-6f19-4248-a624-ac60f2c3aaf2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_7e38a047-6f19-4248-a624-ac60f2c3aaf2_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_7e38a047-6f19-4248-a624-ac60f2c3aaf2" xlink:to="loc_srt_ConsolidationItemsDomain_7e38a047-6f19-4248-a624-ac60f2c3aaf2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_07dc67d6-1731-486c-b41b-9288ac503a57" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_7e38a047-6f19-4248-a624-ac60f2c3aaf2" xlink:to="loc_srt_ConsolidationItemsDomain_07dc67d6-1731-486c-b41b-9288ac503a57" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_ebaf3b49-a7fa-45eb-ad50-d3787e3c9c20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_07dc67d6-1731-486c-b41b-9288ac503a57" xlink:to="loc_us-gaap_OperatingSegmentsMember_ebaf3b49-a7fa-45eb-ad50-d3787e3c9c20" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_e5df3e4d-c46d-494c-8424-5da4556ac398" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_e5df3e4d-c46d-494c-8424-5da4556ac398" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_b08b618c-fb48-463a-8967-dbd090be7b66" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportingUnits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:to="loc_us-gaap_NumberOfReportingUnits_b08b618c-fb48-463a-8967-dbd090be7b66" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitAmountOfFairValueInExcessOfCarryingAmount_23587426-a19d-4d14-a160-8669c0bb1367" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitAmountOfFairValueInExcessOfCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:to="loc_us-gaap_ReportingUnitAmountOfFairValueInExcessOfCarryingAmount_23587426-a19d-4d14-a160-8669c0bb1367" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_96e2d7bc-17f2-4660-96bb-d4d0d6a85a56" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_483bba75-5008-4024-ba74-42705a118594" xlink:to="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_96e2d7bc-17f2-4660-96bb-d4d0d6a85a56" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/FAIRVALUEMEASUREMENTSfinancialinstrumentsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#FAIRVALUEMEASUREMENTSfinancialinstrumentsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/FAIRVALUEMEASUREMENTSfinancialinstrumentsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_58b5c90a-cb19-418e-8150-775af4191637" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_58b5c90a-cb19-418e-8150-775af4191637" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_58b5c90a-cb19-418e-8150-775af4191637_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_58b5c90a-cb19-418e-8150-775af4191637" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_58b5c90a-cb19-418e-8150-775af4191637_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_58b5c90a-cb19-418e-8150-775af4191637" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_42fb33e0-8a96-47ca-a996-8a864ca285a4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_42fb33e0-8a96-47ca-a996-8a864ca285a4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FundsHeldForCustomersMember_81306fc0-4a96-40fa-beb1-c679e609264f" xlink:href="dlx-20231231.xsd#dlx_FundsHeldForCustomersMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:to="loc_dlx_FundsHeldForCustomersMember_81306fc0-4a96-40fa-beb1-c679e609264f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_95b6e9d5-48cd-4362-932c-35be00aefb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_95b6e9d5-48cd-4362-932c-35be00aefb8b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_OthercurrentandnoncurrentassetsMember_f14e712a-286a-42b9-9391-5c2dc3f20c38" xlink:href="dlx-20231231.xsd#dlx_OthercurrentandnoncurrentassetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:to="loc_dlx_OthercurrentandnoncurrentassetsMember_f14e712a-286a-42b9-9391-5c2dc3f20c38" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_CurrentPortionOfLongTermDebtAndLongTermDebtMember_ee3f6e48-c1f2-419a-a524-5d51cab5f70e" xlink:href="dlx-20231231.xsd#dlx_CurrentPortionOfLongTermDebtAndLongTermDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_053e9800-6877-4fcb-b087-ae7167b3bd75" xlink:to="loc_dlx_CurrentPortionOfLongTermDebtAndLongTermDebtMember_ee3f6e48-c1f2-419a-a524-5d51cab5f70e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b0a4b440-9ba9-46e3-a445-cefb5e265c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b0a4b440-9ba9-46e3-a445-cefb5e265c8a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b0a4b440-9ba9-46e3-a445-cefb5e265c8a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b0a4b440-9ba9-46e3-a445-cefb5e265c8a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b0a4b440-9ba9-46e3-a445-cefb5e265c8a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d6aab1a-d27d-4b59-b0c1-a436a206f9b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b0a4b440-9ba9-46e3-a445-cefb5e265c8a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d6aab1a-d27d-4b59-b0c1-a436a206f9b6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_d161c7aa-27a9-4145-a981-b707aab70b2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d6aab1a-d27d-4b59-b0c1-a436a206f9b6" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_d161c7aa-27a9-4145-a981-b707aab70b2f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c6f8039a-bd8f-41f8-a49d-68f43cc46bd1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d6aab1a-d27d-4b59-b0c1-a436a206f9b6" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c6f8039a-bd8f-41f8-a49d-68f43cc46bd1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_5cd1d615-8043-4966-9dd2-31a7c5ff6bf1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d6aab1a-d27d-4b59-b0c1-a436a206f9b6" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_5cd1d615-8043-4966-9dd2-31a7c5ff6bf1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b385c3b4-4973-4733-93bf-3f2e4484675a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b385c3b4-4973-4733-93bf-3f2e4484675a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_b385c3b4-4973-4733-93bf-3f2e4484675a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b385c3b4-4973-4733-93bf-3f2e4484675a" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_b385c3b4-4973-4733-93bf-3f2e4484675a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_20386080-7210-4f5d-abf9-98e0e545927f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_b385c3b4-4973-4733-93bf-3f2e4484675a" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_20386080-7210-4f5d-abf9-98e0e545927f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_55b0f3f4-7078-42ae-ab06-84b82a6ee63d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_20386080-7210-4f5d-abf9-98e0e545927f" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_55b0f3f4-7078-42ae-ab06-84b82a6ee63d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_44a52ee1-8876-45b7-9b76-4fcae07b85df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_22cd315d-cedb-49ce-8ec2-7c0a703fc3b4" xlink:to="loc_us-gaap_FinancialInstrumentAxis_44a52ee1-8876-45b7-9b76-4fcae07b85df" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_44a52ee1-8876-45b7-9b76-4fcae07b85df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_44a52ee1-8876-45b7-9b76-4fcae07b85df" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_44a52ee1-8876-45b7-9b76-4fcae07b85df_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ff13df85-0c65-431f-bea9-0293801f5cc0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_44a52ee1-8876-45b7-9b76-4fcae07b85df" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ff13df85-0c65-431f-bea9-0293801f5cc0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_a845a07a-af77-409f-8ad0-158c897b7836" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ff13df85-0c65-431f-bea9-0293801f5cc0" xlink:to="loc_us-gaap_MoneyMarketFundsMember_a845a07a-af77-409f-8ad0-158c897b7836" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_fe9ae86a-ca9f-4a21-9d9b-34cbe21cf487" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonUsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ff13df85-0c65-431f-bea9-0293801f5cc0" xlink:to="loc_us-gaap_NonUsMember_fe9ae86a-ca9f-4a21-9d9b-34cbe21cf487" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_97c4254e-093c-495c-932f-d1739d10c730" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_97c4254e-093c-495c-932f-d1739d10c730" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_49746e7a-2422-48db-82c1-ca46bd0a0eab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_49746e7a-2422-48db-82c1-ca46bd0a0eab" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_bbaa496f-76ef-450f-9bb2-72fd669b5026" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_DerivativeAssets_bbaa496f-76ef-450f-9bb2-72fd669b5026" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_dbf29d36-5f7d-4411-9afe-f08e5b9893c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_dbf29d36-5f7d-4411-9afe-f08e5b9893c1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_b6fb4df1-7d0c-4445-b227-b63ae5d6951c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_b6fb4df1-7d0c-4445-b227-b63ae5d6951c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_7fa7eb98-82fe-4d49-8d12-ffc1d3510bce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_DerivativeLiabilities_7fa7eb98-82fe-4d49-8d12-ffc1d3510bce" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_10ccc12d-911e-4483-a0f3-a32134f7ab51" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Cash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_Cash_10ccc12d-911e-4483-a0f3-a32134f7ab51" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_36f2fc6a-cb83-423f-a3fb-4030600b6de9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NotesReceivableNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_NotesReceivableNet_36f2fc6a-cb83-423f-a3fb-4030600b6de9" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableFairValueDisclosure_2cf5214c-8c88-4b81-942e-18afdfa85f5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NotesReceivableFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_NotesReceivableFairValueDisclosure_2cf5214c-8c88-4b81-942e-18afdfa85f5c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_d6eba63f-8076-4b5c-91ff-002cebb7d88f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_d6eba63f-8076-4b5c-91ff-002cebb7d88f" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_0df62f0a-1e1c-433c-bfb4-2cede14d9b2c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_cf226a96-c7c8-4e9e-afd8-a1e23430eca2" xlink:to="loc_us-gaap_LongTermDebtFairValue_0df62f0a-1e1c-433c-bfb4-2cede14d9b2c" xlink:type="arc" order="10"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/RESTRUCTURINGANDINTEGRATIONEXPENSEDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#RESTRUCTURINGANDINTEGRATIONEXPENSEDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/RESTRUCTURINGANDINTEGRATIONEXPENSEDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_5e99398f-8d25-426d-a466-ef199c29ec40" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_5e99398f-8d25-426d-a466-ef199c29ec40" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_5e99398f-8d25-426d-a466-ef199c29ec40_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_5e99398f-8d25-426d-a466-ef199c29ec40" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_5e99398f-8d25-426d-a466-ef199c29ec40_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_5e99398f-8d25-426d-a466-ef199c29ec40" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ExternalConsultingAndOtherCostsMember_86dc1f53-94e1-4f26-97d8-5421e684a438" xlink:href="dlx-20231231.xsd#dlx_ExternalConsultingAndOtherCostsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:to="loc_dlx_ExternalConsultingAndOtherCostsMember_86dc1f53-94e1-4f26-97d8-5421e684a438" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_09c040fb-3cd9-49e4-9249-f0b1a15153e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:to="loc_us-gaap_EmployeeSeveranceMember_09c040fb-3cd9-49e4-9249-f0b1a15153e5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_InternallaborMember_aacee8e3-7270-46e8-8c48-d80dba4534fc" xlink:href="dlx-20231231.xsd#dlx_InternallaborMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:to="loc_dlx_InternallaborMember_aacee8e3-7270-46e8-8c48-d80dba4534fc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_e2f2f33a-ee12-43b7-b994-50d23adafb07" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherRestructuringMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_c8d6f62e-4eec-4b9b-b5d0-1b3157a1f214" xlink:to="loc_us-gaap_OtherRestructuringMember_e2f2f33a-ee12-43b7-b994-50d23adafb07" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_854f7bad-a023-4214-8995-c93c35350f7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_854f7bad-a023-4214-8995-c93c35350f7b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_854f7bad-a023-4214-8995-c93c35350f7b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_854f7bad-a023-4214-8995-c93c35350f7b" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_854f7bad-a023-4214-8995-c93c35350f7b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_7207c940-c62e-4e94-bfdf-431d16844deb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_854f7bad-a023-4214-8995-c93c35350f7b" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_7207c940-c62e-4e94-bfdf-431d16844deb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_162b475c-1727-48ad-936a-39a24ae3fdb1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfSalesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_7207c940-c62e-4e94-bfdf-431d16844deb" xlink:to="loc_us-gaap_CostOfSalesMember_162b475c-1727-48ad-936a-39a24ae3fdb1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenseMember_008f685b-9c28-4e9b-9a44-7c8451357bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenseMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_7207c940-c62e-4e94-bfdf-431d16844deb" xlink:to="loc_us-gaap_OperatingExpenseMember_008f685b-9c28-4e9b-9a44-7c8451357bc3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4fb7540d-c2be-4af1-a062-2b1d00780cb9" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:to="loc_srt_RangeAxis_4fb7540d-c2be-4af1-a062-2b1d00780cb9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4fb7540d-c2be-4af1-a062-2b1d00780cb9_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_4fb7540d-c2be-4af1-a062-2b1d00780cb9" xlink:to="loc_srt_RangeMember_4fb7540d-c2be-4af1-a062-2b1d00780cb9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4300e477-1db0-49b1-9855-e3eb12477511" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_4fb7540d-c2be-4af1-a062-2b1d00780cb9" xlink:to="loc_srt_RangeMember_4300e477-1db0-49b1-9855-e3eb12477511" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f53e5a9d-2125-4a61-b724-d914755b0dce" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4300e477-1db0-49b1-9855-e3eb12477511" xlink:to="loc_srt_MaximumMember_f53e5a9d-2125-4a61-b724-d914755b0dce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_9163b3c0-92b7-48a5-88cb-6ae7a65a3f1b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4300e477-1db0-49b1-9855-e3eb12477511" xlink:to="loc_srt_MinimumMember_9163b3c0-92b7-48a5-88cb-6ae7a65a3f1b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_f2196bed-66d0-4e44-a5e1-53889ba70cb3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2446ff77-451e-492c-ac9f-6eb5a48617ae" xlink:to="loc_us-gaap_RestructuringPlanAxis_f2196bed-66d0-4e44-a5e1-53889ba70cb3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_f2196bed-66d0-4e44-a5e1-53889ba70cb3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_f2196bed-66d0-4e44-a5e1-53889ba70cb3" xlink:to="loc_us-gaap_RestructuringPlanDomain_f2196bed-66d0-4e44-a5e1-53889ba70cb3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_b70abff0-735d-4597-b48f-090809bfc1b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_f2196bed-66d0-4e44-a5e1-53889ba70cb3" xlink:to="loc_us-gaap_RestructuringPlanDomain_b70abff0-735d-4597-b48f-090809bfc1b7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_NorthStarProjectMember_dfb9681b-5e06-4777-bf80-64b05e51e7ec" xlink:href="dlx-20231231.xsd#dlx_NorthStarProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_b70abff0-735d-4597-b48f-090809bfc1b7" xlink:to="loc_dlx_NorthStarProjectMember_dfb9681b-5e06-4777-bf80-64b05e51e7ec" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_1af03f4f-8d0f-49a9-93c0-0000d322dd77" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:to="loc_us-gaap_RestructuringCharges_1af03f4f-8d0f-49a9-93c0-0000d322dd77" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Restructuringchargesnet_7b242dfe-f1d3-4214-aefc-826a2c0cd28c" xlink:href="dlx-20231231.xsd#dlx_Restructuringchargesnet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:to="loc_dlx_Restructuringchargesnet_7b242dfe-f1d3-4214-aefc-826a2c0cd28c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1_215b0520-c791-4e8d-8917-0b4732a5a782" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1_215b0520-c791-4e8d-8917-0b4732a5a782" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ExpectedRestructuringIntegrationExpensePeriod_a10bef84-965f-4baa-8225-5e6142ff342e" xlink:href="dlx-20231231.xsd#dlx_ExpectedRestructuringIntegrationExpensePeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5049080c-e686-48ab-8f75-12853e0afac2" xlink:to="loc_dlx_ExpectedRestructuringIntegrationExpensePeriod_a10bef84-965f-4baa-8225-5e6142ff342e" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/RESTRUCTURINGANDINTEGRATIONEXPENSErestructuringandintegrationaccrualsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#RESTRUCTURINGANDINTEGRATIONEXPENSErestructuringandintegrationaccrualsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/RESTRUCTURINGANDINTEGRATIONEXPENSErestructuringandintegrationaccrualsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01337e6d-3bf9-4a58-8e6d-4fd2f9ea7447" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01337e6d-3bf9-4a58-8e6d-4fd2f9ea7447" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_c10947ff-ff55-40af-94c7-c817416880c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01337e6d-3bf9-4a58-8e6d-4fd2f9ea7447" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_c10947ff-ff55-40af-94c7-c817416880c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_c10947ff-ff55-40af-94c7-c817416880c3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_c10947ff-ff55-40af-94c7-c817416880c3" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_c10947ff-ff55-40af-94c7-c817416880c3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_2c89ae2d-3440-4585-9a06-452aa26524d0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_c10947ff-ff55-40af-94c7-c817416880c3" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_2c89ae2d-3440-4585-9a06-452aa26524d0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_11299728-6bbd-4aa8-b01b-b670449a6ea9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_2c89ae2d-3440-4585-9a06-452aa26524d0" xlink:to="loc_us-gaap_EmployeeSeveranceMember_11299728-6bbd-4aa8-b01b-b670449a6ea9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_1ca4da8e-55ba-4a2e-bb67-4a15b0f1c523" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:to="loc_us-gaap_RestructuringReserve_1ca4da8e-55ba-4a2e-bb67-4a15b0f1c523" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_dd8df9c4-7054-46e8-87e2-844c8ca1c238" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:to="loc_us-gaap_RestructuringCharges_dd8df9c4-7054-46e8-87e2-844c8ca1c238" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_829392c6-12cd-4009-b414-33effcee8acc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_829392c6-12cd-4009-b414-33effcee8acc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_135ed5b4-7297-44d7-aa04-0d9b1c581ef4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRestructuring"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_a5f05336-3db4-4093-bffa-ba8da88490d1" xlink:to="loc_us-gaap_PaymentsForRestructuring_135ed5b4-7297-44d7-aa04-0d9b1c581ef4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_e944e2cf-4edf-477d-b923-8d8c968acfa2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/INCOMETAXPROVISIONrepatriationandunrecognizedtaxbenefitsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#INCOMETAXPROVISIONrepatriationandunrecognizedtaxbenefitsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/INCOMETAXPROVISIONrepatriationandunrecognizedtaxbenefitsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_36f9c622-408b-4080-ba1a-ed796ab4e1eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_StatementTable_36f9c622-408b-4080-ba1a-ed796ab4e1eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionAxis_d8ed444e-7d0d-4107-8475-019e5e126306" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_36f9c622-408b-4080-ba1a-ed796ab4e1eb" xlink:to="loc_us-gaap_GeographicDistributionAxis_d8ed444e-7d0d-4107-8475-019e5e126306" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_d8ed444e-7d0d-4107-8475-019e5e126306_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_d8ed444e-7d0d-4107-8475-019e5e126306" xlink:to="loc_us-gaap_GeographicDistributionDomain_d8ed444e-7d0d-4107-8475-019e5e126306_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_abe68fa8-e5da-4bcf-b106-8eb4d47e0f19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_d8ed444e-7d0d-4107-8475-019e5e126306" xlink:to="loc_us-gaap_GeographicDistributionDomain_abe68fa8-e5da-4bcf-b106-8eb4d47e0f19" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionForeignMember_d7e36b15-a119-4f4a-bf30-1b37975c48cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicDistributionForeignMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_abe68fa8-e5da-4bcf-b106-8eb4d47e0f19" xlink:to="loc_us-gaap_GeographicDistributionForeignMember_d7e36b15-a119-4f4a-bf30-1b37975c48cf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_2309583e-c246-4ee3-83e1-50bfd0553641" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_2309583e-c246-4ee3-83e1-50bfd0553641" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignEarningsRepatriated_97224c9b-d0dc-4f73-bccb-96ac1cd8f927" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignEarningsRepatriated"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_ForeignEarningsRepatriated_97224c9b-d0dc-4f73-bccb-96ac1cd8f927" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_8c338564-bbe3-4b4e-beb9-5a741489bbc7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_8c338564-bbe3-4b4e-beb9-5a741489bbc7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_079ee687-12d5-469b-8e11-68bae65a9a72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_079ee687-12d5-469b-8e11-68bae65a9a72" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_b86c3fb9-748a-4b91-9761-62be3183ea75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_b86c3fb9-748a-4b91-9761-62be3183ea75" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_7e3c5132-04d8-4e9b-8ed0-19cf1854b93c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_7e3c5132-04d8-4e9b-8ed0-19cf1854b93c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_677531ee-e589-465e-8a66-3613dea9cf3e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_677531ee-e589-465e-8a66-3613dea9cf3e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_efc06056-dc87-4d79-8f77-f2fb5544a422" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_efc06056-dc87-4d79-8f77-f2fb5544a422" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_f6cca6df-8ff3-47cd-af39-d28b07de9bdf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_f6cca6df-8ff3-47cd-af39-d28b07de9bdf" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_5538fa08-f400-41b4-88ea-845a9cb960a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d16debf0-dfd0-42e2-a18c-75b7f7892e55" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_5538fa08-f400-41b4-88ea-845a9cb960a5" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_acc14d13-04ff-4db1-aafd-972e9477fee1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefits"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxUncertaintiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c8ebdb04-1b88-4c6a-94d9-25f7533220ee" xlink:to="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_3b26d420-a4f7-46fe-8a4a-34e7cd2aeade" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_3b26d420-a4f7-46fe-8a4a-34e7cd2aeade" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_ebd42dfc-4e9f-4163-b0b6-caa5778504ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_ebd42dfc-4e9f-4163-b0b6-caa5778504ca" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_c630d897-4a0c-44b4-b2f3-c47a58143edf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_c630d897-4a0c-44b4-b2f3-c47a58143edf" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_9bca66ec-13ef-4869-84ff-1818803b9974" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:to="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_9bca66ec-13ef-4869-84ff-1818803b9974" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_4e0563be-5be0-4fc0-9b5b-085469dfeaf0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxUncertaintiesAbstract_024a52db-bce2-42da-beed-6117ca7f34ac" xlink:to="loc_us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_4e0563be-5be0-4fc0-9b5b-085469dfeaf0" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/INCOMETAXPROVISIONnetoperatinglosstaxcreditandcapitallosscarryforwardsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#INCOMETAXPROVISIONnetoperatinglosstaxcreditandcapitallosscarryforwardsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/INCOMETAXPROVISIONnetoperatinglosstaxcreditandcapitallosscarryforwardsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_fb2998bc-dcb4-4f6a-a34a-87ca599962c7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_9169eb49-96ab-4382-9e39-9861be7c3125" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_fb2998bc-dcb4-4f6a-a34a-87ca599962c7" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_9169eb49-96ab-4382-9e39-9861be7c3125" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_fb37421c-e1ce-40f2-babf-c6021d616708" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_9169eb49-96ab-4382-9e39-9861be7c3125" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_fb37421c-e1ce-40f2-babf-c6021d616708" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_fb37421c-e1ce-40f2-babf-c6021d616708_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_fb37421c-e1ce-40f2-babf-c6021d616708" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_fb37421c-e1ce-40f2-babf-c6021d616708_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_96c0d932-f964-4833-838d-0446d3870c54" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_fb37421c-e1ce-40f2-babf-c6021d616708" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_96c0d932-f964-4833-838d-0446d3870c54" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_7b56af9b-44f1-4f1a-a9ab-da3bce13ac95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_96c0d932-f964-4833-838d-0446d3870c54" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_7b56af9b-44f1-4f1a-a9ab-da3bce13ac95" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_6ded10fa-498a-4704-b14b-79b6471dd04c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticCountryMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_96c0d932-f964-4833-838d-0446d3870c54" xlink:to="loc_us-gaap_DomesticCountryMember_6ded10fa-498a-4704-b14b-79b6471dd04c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_5bd7454d-d776-4a19-b775-e228f62c65ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_9169eb49-96ab-4382-9e39-9861be7c3125" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_5bd7454d-d776-4a19-b775-e228f62c65ec" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_5bd7454d-d776-4a19-b775-e228f62c65ec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_5bd7454d-d776-4a19-b775-e228f62c65ec" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_5bd7454d-d776-4a19-b775-e228f62c65ec_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_2cd197e7-dd55-41bf-baf2-5b9564f5287c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_5bd7454d-d776-4a19-b775-e228f62c65ec" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_2cd197e7-dd55-41bf-baf2-5b9564f5287c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DeductibleInterestCarryforwardMember_f0d599b2-45ae-4fdf-b005-b19a32f1e3b4" xlink:href="dlx-20231231.xsd#dlx_DeductibleInterestCarryforwardMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_2cd197e7-dd55-41bf-baf2-5b9564f5287c" xlink:to="loc_dlx_DeductibleInterestCarryforwardMember_f0d599b2-45ae-4fdf-b005-b19a32f1e3b4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalLossCarryforwardMember_24891631-c3eb-4d80-a047-8867904b7081" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CapitalLossCarryforwardMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_2cd197e7-dd55-41bf-baf2-5b9564f5287c" xlink:to="loc_us-gaap_CapitalLossCarryforwardMember_24891631-c3eb-4d80-a047-8867904b7081" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Netoperatinglossandtaxcreditcarryforwards_5ecafb3d-4c80-47e7-b305-6df78ddb4709" xlink:href="dlx-20231231.xsd#dlx_Netoperatinglossandtaxcreditcarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_fb2998bc-dcb4-4f6a-a34a-87ca599962c7" xlink:to="loc_dlx_Netoperatinglossandtaxcreditcarryforwards_5ecafb3d-4c80-47e7-b305-6df78ddb4709" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_f6adc388-1dd1-416d-bff6-620bcce3a6e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_fb2998bc-dcb4-4f6a-a34a-87ca599962c7" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_f6adc388-1dd1-416d-bff6-620bcce3a6e2" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSlongtermincentiveplanandsharebasedcompensationexpenseDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREBASEDCOMPENSATIONPLANSlongtermincentiveplanandsharebasedcompensationexpenseDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSlongtermincentiveplanandsharebasedcompensationexpenseDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c0315223-934b-4073-ba26-fbbf0f22939c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c0315223-934b-4073-ba26-fbbf0f22939c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_31161c6d-d000-4192-af14-1db8b0d3cd44" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c0315223-934b-4073-ba26-fbbf0f22939c" xlink:to="loc_us-gaap_AwardTypeAxis_31161c6d-d000-4192-af14-1db8b0d3cd44" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_31161c6d-d000-4192-af14-1db8b0d3cd44_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_31161c6d-d000-4192-af14-1db8b0d3cd44" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_31161c6d-d000-4192-af14-1db8b0d3cd44_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_31161c6d-d000-4192-af14-1db8b0d3cd44" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_fc6345ed-7a88-478b-8b6e-a53502ea21f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_fc6345ed-7a88-478b-8b6e-a53502ea21f1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_30a199c9-efa5-4282-a082-44ec51ee8a02" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:to="loc_us-gaap_PerformanceSharesMember_30a199c9-efa5-4282-a082-44ec51ee8a02" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_fcf7d7b2-3d0a-4924-8b75-a7588b7b228e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:to="loc_us-gaap_EmployeeStockOptionMember_fcf7d7b2-3d0a-4924-8b75-a7588b7b228e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_bdef1adb-07b3-4cdf-bc40-52f116d32963" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6b9cdc86-3c2e-4ac2-b1b6-ee554217b569" xlink:to="loc_us-gaap_EmployeeStockMember_bdef1adb-07b3-4cdf-bc40-52f116d32963" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_b1abbe28-52d6-4b20-be16-a37cad40888f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_b1abbe28-52d6-4b20-be16-a37cad40888f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_8b676389-1927-4888-896f-91998b081314" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_8b676389-1927-4888-896f-91998b081314" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_4238612d-55f7-42c9-b092-d612d973d549" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_ShareBasedCompensation_4238612d-55f7-42c9-b092-d612d973d549" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_8e39679b-e19f-4444-a960-3636de63c276" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_8e39679b-e19f-4444-a960-3636de63c276" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1b0d5a05-dfd1-48ab-a8f9-797825ee9836" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1b0d5a05-dfd1-48ab-a8f9-797825ee9836" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_f784bcf7-9f57-4a48-885a-913498c46719" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6d2878b0-1a83-451b-a84f-983ac5a37fb0" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_f784bcf7-9f57-4a48-885a-913498c46719" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSawardtermsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREBASEDCOMPENSATIONPLANSawardtermsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSawardtermsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_46c8196f-41de-4c31-9641-b67440f83713" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_46c8196f-41de-4c31-9641-b67440f83713" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b5561443-62f5-4bb7-844f-519ef206dc66" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_46c8196f-41de-4c31-9641-b67440f83713" xlink:to="loc_us-gaap_AwardTypeAxis_b5561443-62f5-4bb7-844f-519ef206dc66" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b5561443-62f5-4bb7-844f-519ef206dc66_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_b5561443-62f5-4bb7-844f-519ef206dc66" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b5561443-62f5-4bb7-844f-519ef206dc66_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_966bbd36-8ee2-4396-9b94-c993f3b047fd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_b5561443-62f5-4bb7-844f-519ef206dc66" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_966bbd36-8ee2-4396-9b94-c993f3b047fd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_1bb63618-4935-49d1-88a2-0c5fb1542c34" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_966bbd36-8ee2-4396-9b94-c993f3b047fd" xlink:to="loc_us-gaap_EmployeeStockOptionMember_1bb63618-4935-49d1-88a2-0c5fb1542c34" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_40a8da08-8485-4426-9449-57ff5fe4134e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_966bbd36-8ee2-4396-9b94-c993f3b047fd" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_40a8da08-8485-4426-9449-57ff5fe4134e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_bc8a9e2a-04d6-44e7-8956-8bc957a36de2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_966bbd36-8ee2-4396-9b94-c993f3b047fd" xlink:to="loc_us-gaap_PerformanceSharesMember_bc8a9e2a-04d6-44e7-8956-8bc957a36de2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f43db215-345f-4a93-8046-d4cd75219510" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_46c8196f-41de-4c31-9641-b67440f83713" xlink:to="loc_srt_RangeAxis_f43db215-345f-4a93-8046-d4cd75219510" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f43db215-345f-4a93-8046-d4cd75219510_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f43db215-345f-4a93-8046-d4cd75219510" xlink:to="loc_srt_RangeMember_f43db215-345f-4a93-8046-d4cd75219510_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_719cf8c5-593d-4247-89b2-1b6cf5245cfe" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f43db215-345f-4a93-8046-d4cd75219510" xlink:to="loc_srt_RangeMember_719cf8c5-593d-4247-89b2-1b6cf5245cfe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_4c2866a0-394a-4d5d-b050-86d412a6dd4c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_719cf8c5-593d-4247-89b2-1b6cf5245cfe" xlink:to="loc_srt_MinimumMember_4c2866a0-394a-4d5d-b050-86d412a6dd4c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5adb4fba-a504-457b-adff-667571386c82" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_719cf8c5-593d-4247-89b2-1b6cf5245cfe" xlink:to="loc_srt_MaximumMember_5adb4fba-a504-457b-adff-667571386c82" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_1f9c00a1-fc54-4668-b4e5-b4f3897b2b52" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_1f9c00a1-fc54-4668-b4e5-b4f3897b2b52" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_330aac51-d514-4141-a61d-9c14716adca9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_330aac51-d514-4141-a61d-9c14716adca9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_722759f5-6cbd-4a25-940d-3ba49e008539" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_722759f5-6cbd-4a25-940d-3ba49e008539" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Periodsaftergrantwhenvestingofawardmaybemodified_edaeba4b-8710-49ec-ae67-be4124427194" xlink:href="dlx-20231231.xsd#dlx_Periodsaftergrantwhenvestingofawardmaybemodified"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_dlx_Periodsaftergrantwhenvestingofawardmaybemodified_edaeba4b-8710-49ec-ae67-be4124427194" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_NumberOfSharesOfCommonStockIntoWhichEachAwardIsConvertible_edfd55c2-e461-41f4-a13b-c2792abf9186" xlink:href="dlx-20231231.xsd#dlx_NumberOfSharesOfCommonStockIntoWhichEachAwardIsConvertible"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_ebbcf3b0-ea63-4e11-919e-cb24acbfa33b" xlink:to="loc_dlx_NumberOfSharesOfCommonStockIntoWhichEachAwardIsConvertible_edfd55c2-e461-41f4-a13b-c2792abf9186" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSstockoptionsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREBASEDCOMPENSATIONPLANSstockoptionsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSstockoptionsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_360e5152-91f5-46d3-a2dd-17184d4db6be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_360e5152-91f5-46d3-a2dd-17184d4db6be" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_03f6cde8-2201-48a1-bff5-58e5491f576b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_360e5152-91f5-46d3-a2dd-17184d4db6be" xlink:to="loc_us-gaap_AwardTypeAxis_03f6cde8-2201-48a1-bff5-58e5491f576b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_03f6cde8-2201-48a1-bff5-58e5491f576b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_03f6cde8-2201-48a1-bff5-58e5491f576b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_03f6cde8-2201-48a1-bff5-58e5491f576b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e1e488b5-9830-4db1-b698-f092d664cac9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_03f6cde8-2201-48a1-bff5-58e5491f576b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e1e488b5-9830-4db1-b698-f092d664cac9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_9110193a-5066-49e1-9f5e-6947fed4655e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e1e488b5-9830-4db1-b698-f092d664cac9" xlink:to="loc_us-gaap_EmployeeStockOptionMember_9110193a-5066-49e1-9f5e-6947fed4655e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_96b99c1f-adc4-41e7-8410-a4309b1df914" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_96b99c1f-adc4-41e7-8410-a4309b1df914" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_cd2142fc-a0d3-474f-963c-5ec595a0bcd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_cd2142fc-a0d3-474f-963c-5ec595a0bcd6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_023c336a-1058-42fb-865d-3b8640d0a47e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_023c336a-1058-42fb-865d-3b8640d0a47e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_05092e54-1b7f-4285-9738-81e0e3d1d824" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_e406a301-2927-4295-9513-af039a1b8392" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_05092e54-1b7f-4285-9738-81e0e3d1d824" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_49db3987-e629-4633-aef0-45528bbaf3ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_49db3987-e629-4633-aef0-45528bbaf3ec" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_4daabb8e-8838-4621-bd88-d88b9b219d1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_4daabb8e-8838-4621-bd88-d88b9b219d1d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_e6d42791-a21a-4f18-9cd7-363ecc103720" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_e6d42791-a21a-4f18-9cd7-363ecc103720" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_a6623916-5463-4801-bb1a-d34e1c58d4f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_6db31551-3c43-4aac-b50f-185af38ec793" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_39e08ecb-313b-4dec-9101-743f3a1c2376" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_6db31551-3c43-4aac-b50f-185af38ec793" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c80c896d-c13f-41b3-b263-08edcd8c45e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c80c896d-c13f-41b3-b263-08edcd8c45e9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_791631ba-13a0-4463-a186-b6573aa89168" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c80c896d-c13f-41b3-b263-08edcd8c45e9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_791631ba-13a0-4463-a186-b6573aa89168" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_7160fb0d-5a39-47a8-920e-2bf07c5e6d20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c80c896d-c13f-41b3-b263-08edcd8c45e9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_7160fb0d-5a39-47a8-920e-2bf07c5e6d20" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6e2251a4-1f34-4ab4-adf4-16b01415dfc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_475367e0-40aa-484d-9562-0cb6806d246e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c80c896d-c13f-41b3-b263-08edcd8c45e9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_475367e0-40aa-484d-9562-0cb6806d246e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_227dfb9b-fa63-4aae-8304-b9dbba668068" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_73aac7a8-b48a-42f4-9c39-5a87aaf1e6e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_73aac7a8-b48a-42f4-9c39-5a87aaf1e6e4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_519a128c-59c7-46fa-bac2-2e91478b8ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_519a128c-59c7-46fa-bac2-2e91478b8ebb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_dbb5cbfb-981c-4d53-be11-addd8012288f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_dbb5cbfb-981c-4d53-be11-addd8012288f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_ffbe8bad-52ba-46b3-87ae-476707f9dc5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_ffbe8bad-52ba-46b3-87ae-476707f9dc5a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_0ede2f72-31bc-4aa7-9126-9010b23fdf0c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_0ede2f72-31bc-4aa7-9126-9010b23fdf0c" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_4bfa5576-4b9d-4f2f-aa96-d3e0c451086b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_47a4736b-ccda-40ee-9b64-a8982edaf0f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_4bfa5576-4b9d-4f2f-aa96-d3e0c451086b" xlink:type="arc" order="6"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSrestrictedstockunitsandperformanceshareunitawardsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREBASEDCOMPENSATIONPLANSrestrictedstockunitsandperformanceshareunitawardsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSrestrictedstockunitsandperformanceshareunitawardsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e87eea6c-6268-4a0e-a9f5-975a69c38cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_10fa4d28-9c01-4060-99f5-0e54d6066665" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e87eea6c-6268-4a0e-a9f5-975a69c38cd4" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_10fa4d28-9c01-4060-99f5-0e54d6066665" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_168b7609-d34b-4162-95f9-31b9221df4e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_10fa4d28-9c01-4060-99f5-0e54d6066665" xlink:to="loc_us-gaap_AwardTypeAxis_168b7609-d34b-4162-95f9-31b9221df4e2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_168b7609-d34b-4162-95f9-31b9221df4e2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_168b7609-d34b-4162-95f9-31b9221df4e2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_168b7609-d34b-4162-95f9-31b9221df4e2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_eb599b55-9012-4d93-9715-54698d0e8805" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_168b7609-d34b-4162-95f9-31b9221df4e2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_eb599b55-9012-4d93-9715-54698d0e8805" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_8c6219a0-c5e7-4d0b-ba3d-62f08fb89fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_eb599b55-9012-4d93-9715-54698d0e8805" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_8c6219a0-c5e7-4d0b-ba3d-62f08fb89fdd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_RestrictedStockUnitsClassifiedAsLiabilitiesMember_bb472f73-ef8d-4acd-a227-fad049719cbd" xlink:href="dlx-20231231.xsd#dlx_RestrictedStockUnitsClassifiedAsLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_eb599b55-9012-4d93-9715-54698d0e8805" xlink:to="loc_dlx_RestrictedStockUnitsClassifiedAsLiabilitiesMember_bb472f73-ef8d-4acd-a227-fad049719cbd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_c78f6816-656d-4589-a7a6-f7306147707a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_eb599b55-9012-4d93-9715-54698d0e8805" xlink:to="loc_us-gaap_PerformanceSharesMember_c78f6816-656d-4589-a7a6-f7306147707a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_697d68f7-9461-4146-92c5-4b304365631f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_10fa4d28-9c01-4060-99f5-0e54d6066665" xlink:to="loc_srt_RangeAxis_697d68f7-9461-4146-92c5-4b304365631f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_697d68f7-9461-4146-92c5-4b304365631f_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_697d68f7-9461-4146-92c5-4b304365631f" xlink:to="loc_srt_RangeMember_697d68f7-9461-4146-92c5-4b304365631f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4a5948a0-25e7-4306-8012-0809ea71d211" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_697d68f7-9461-4146-92c5-4b304365631f" xlink:to="loc_srt_RangeMember_4a5948a0-25e7-4306-8012-0809ea71d211" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2da155cb-50d0-413e-a54b-948ce27ae837" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4a5948a0-25e7-4306-8012-0809ea71d211" xlink:to="loc_srt_MinimumMember_2da155cb-50d0-413e-a54b-948ce27ae837" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d98fd883-efea-470f-b859-e9a44a7fea31" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4a5948a0-25e7-4306-8012-0809ea71d211" xlink:to="loc_srt_MaximumMember_d98fd883-efea-470f-b859-e9a44a7fea31" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_b545c0b4-7e17-455c-a5e6-50b2e19b2814" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e87eea6c-6268-4a0e-a9f5-975a69c38cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_b545c0b4-7e17-455c-a5e6-50b2e19b2814" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_11e1fc3e-2441-48b4-a904-4e1639c3c63f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_b545c0b4-7e17-455c-a5e6-50b2e19b2814" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_11e1fc3e-2441-48b4-a904-4e1639c3c63f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_47f2a5af-a442-423c-b7fb-c5414aa17150" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_b545c0b4-7e17-455c-a5e6-50b2e19b2814" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_47f2a5af-a442-423c-b7fb-c5414aa17150" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_6eab7163-79f7-4122-8cbb-607d7ce47cd9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_b545c0b4-7e17-455c-a5e6-50b2e19b2814" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_6eab7163-79f7-4122-8cbb-607d7ce47cd9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e87eea6c-6268-4a0e-a9f5-975a69c38cd4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_159fea60-5bf7-4459-a27d-4642f1bdc3a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_159fea60-5bf7-4459-a27d-4642f1bdc3a9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_9ab10de1-ea32-4126-8d6a-f29eea2aa121" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_9ab10de1-ea32-4126-8d6a-f29eea2aa121" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_d5049be0-a5f6-497f-8542-0868784aa4a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_d5049be0-a5f6-497f-8542-0868784aa4a5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_882ef01a-1eaf-4ffe-a2d0-b10c8393091e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_882ef01a-1eaf-4ffe-a2d0-b10c8393091e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_147b32dc-1379-4cf9-adbb-f731e797aac9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_94e7fc1d-7b99-4cf4-99d9-8f93c9a3dfdc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_94e7fc1d-7b99-4cf4-99d9-8f93c9a3dfdc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_9985d9e0-a3ab-4153-9d91-dbadc9d63d55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_9985d9e0-a3ab-4153-9d91-dbadc9d63d55" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_c327bb7e-4768-46dc-8268-10d6400fb69d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_c327bb7e-4768-46dc-8268-10d6400fb69d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_f0955998-be46-491c-943d-c1693afe6bdd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01192ef0-5942-45cc-91b2-55e13c6fc514" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_f0955998-be46-491c-943d-c1693afe6bdd" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ea9ca40b-9e68-44c2-ab82-65b2f8415f5b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_7beeae50-5ea5-469d-984a-ecaa6b83541b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_ef76eab7-fe7d-4ac9-9636-5fad6a75dd2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_ef76eab7-fe7d-4ac9-9636-5fad6a75dd2b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_38ea8865-6af6-404b-b20d-c131058f30fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_38ea8865-6af6-404b-b20d-c131058f30fe" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_fce3be4b-169f-42b0-b20f-354c37066243" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:to="loc_us-gaap_SharePrice_fce3be4b-169f-42b0-b20f-354c37066243" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_0fe633e6-0fcb-4dfd-bd9d-96409cdcfe35" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_b170820b-c836-4505-b37e-43f8c72cec3c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_0fe633e6-0fcb-4dfd-bd9d-96409cdcfe35" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSemployeestockpurchaseplanDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREBASEDCOMPENSATIONPLANSemployeestockpurchaseplanDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREBASEDCOMPENSATIONPLANSemployeestockpurchaseplanDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems_5f83e542-6ad2-4ba4-8803-b7b820d2169e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable_22519f0b-71a2-4ea0-a193-24d7c29c8a38" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems_5f83e542-6ad2-4ba4-8803-b7b820d2169e" xlink:to="loc_us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable_22519f0b-71a2-4ea0-a193-24d7c29c8a38" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_7f342e90-5408-4f86-b4f9-8496c1a76a60" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTable_22519f0b-71a2-4ea0-a193-24d7c29c8a38" xlink:to="loc_srt_RangeAxis_7f342e90-5408-4f86-b4f9-8496c1a76a60" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7f342e90-5408-4f86-b4f9-8496c1a76a60_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_7f342e90-5408-4f86-b4f9-8496c1a76a60" xlink:to="loc_srt_RangeMember_7f342e90-5408-4f86-b4f9-8496c1a76a60_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9cfcc34f-712e-425c-a185-85d12045451a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_7f342e90-5408-4f86-b4f9-8496c1a76a60" xlink:to="loc_srt_RangeMember_9cfcc34f-712e-425c-a185-85d12045451a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_cd95f678-9812-4864-8535-97b7591e2d7e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9cfcc34f-712e-425c-a185-85d12045451a" xlink:to="loc_srt_MinimumMember_cd95f678-9812-4864-8535-97b7591e2d7e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4f1d62b6-fe63-448b-ba20-c0603b0efbd5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9cfcc34f-712e-425c-a185-85d12045451a" xlink:to="loc_srt_MaximumMember_4f1d62b6-fe63-448b-ba20-c0603b0efbd5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_ee23f26c-4f9b-4fa2-a168-966cde38f385" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems_5f83e542-6ad2-4ba4-8803-b7b820d2169e" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_ee23f26c-4f9b-4fa2-a168-966cde38f385" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Purchasepricepershareemployeestockpurchaseplan_d952c1f8-bf07-4d19-8a78-f744fc1203f0" xlink:href="dlx-20231231.xsd#dlx_Purchasepricepershareemployeestockpurchaseplan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresLineItems_5f83e542-6ad2-4ba4-8803-b7b820d2169e" xlink:to="loc_dlx_Purchasepricepershareemployeestockpurchaseplan_d952c1f8-bf07-4d19-8a78-f744fc1203f0" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSobligationsandfundedstatusDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#POSTRETIREMENTBENEFITSobligationsandfundedstatusDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSobligationsandfundedstatusDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_89031c19-e707-491c-bf0b-4d0ee6cc7a1f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_89031c19-e707-491c-bf0b-4d0ee6cc7a1f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_e209f17e-25e9-4e51-8ae0-8df3d0d60a31" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_89031c19-e707-491c-bf0b-4d0ee6cc7a1f" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_e209f17e-25e9-4e51-8ae0-8df3d0d60a31" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e209f17e-25e9-4e51-8ae0-8df3d0d60a31_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e209f17e-25e9-4e51-8ae0-8df3d0d60a31" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e209f17e-25e9-4e51-8ae0-8df3d0d60a31_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_edf1393e-3479-4dba-a4ad-0619fc3c6960" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e209f17e-25e9-4e51-8ae0-8df3d0d60a31" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_edf1393e-3479-4dba-a4ad-0619fc3c6960" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_837ae6f7-7f37-433d-9bb2-5d97a5a57c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_edf1393e-3479-4dba-a4ad-0619fc3c6960" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_837ae6f7-7f37-433d-9bb2-5d97a5a57c8a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_576298cd-2691-45c2-99ff-4c5d3213a37b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_edf1393e-3479-4dba-a4ad-0619fc3c6960" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_576298cd-2691-45c2-99ff-4c5d3213a37b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_1f24f687-95a7-48c9-beee-2ca66f877f36" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_1f24f687-95a7-48c9-beee-2ca66f877f36" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_dd631782-dae5-4926-b3e5-716308005253" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_dd631782-dae5-4926-b3e5-716308005253" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_6ddc3782-2368-42a9-94ca-2686ffa3365b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_6ddc3782-2368-42a9-94ca-2686ffa3365b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_f5185220-4e76-4377-9933-0e75e28f82e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bdfcdc28-d4e6-4a59-a4d2-1a8fd23f1e83" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_f5185220-4e76-4377-9933-0e75e28f82e3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_65efc42c-4c1a-46d0-a5fb-258bba2a9c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_bfc1c952-2c49-4772-87e5-9160b23643f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_bfc1c952-2c49-4772-87e5-9160b23643f8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_acc151e2-8a1a-4ab2-a8b7-698a375d5c98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_bfc1c952-2c49-4772-87e5-9160b23643f8" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_acc151e2-8a1a-4ab2-a8b7-698a375d5c98" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_639ea24f-4ea1-4537-8bcb-efe14b58eabf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_bfc1c952-2c49-4772-87e5-9160b23643f8" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_639ea24f-4ea1-4537-8bcb-efe14b58eabf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_06c95272-9c6e-4a7f-901a-87c61c68601c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_bfc1c952-2c49-4772-87e5-9160b23643f8" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_06c95272-9c6e-4a7f-901a-87c61c68601c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4627e25c-fb2d-4f37-8917-b9a1583fe360" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_202874e3-3158-4161-9500-fb390629a3ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_202874e3-3158-4161-9500-fb390629a3ca" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4b25c82a-d9fb-490d-8ac4-ea486088c7a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4b25c82a-d9fb-490d-8ac4-ea486088c7a5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_de826197-a097-49f3-bc74-11abcc25c378" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4b25c82a-d9fb-490d-8ac4-ea486088c7a5" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_de826197-a097-49f3-bc74-11abcc25c378" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_f0561dd2-ad24-4a49-934d-acb27653e988" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4b25c82a-d9fb-490d-8ac4-ea486088c7a5" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_f0561dd2-ad24-4a49-934d-acb27653e988" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_67afdb60-6805-4b14-a89b-91314cae71fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4b25c82a-d9fb-490d-8ac4-ea486088c7a5" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_67afdb60-6805-4b14-a89b-91314cae71fa" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a4734727-51ef-440b-9e47-c9f9ab624497" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_3daea2dc-333b-4369-94e6-c03e4a862b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_3daea2dc-333b-4369-94e6-c03e4a862b6a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_963151e5-41e5-4eb3-ad9d-3022f666d411" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_963151e5-41e5-4eb3-ad9d-3022f666d411" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeTax_1a0eb84b-a158-401c-a5bb-57c83c438bf9" xlink:href="dlx-20231231.xsd#dlx_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:to="loc_dlx_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeTax_1a0eb84b-a158-401c-a5bb-57c83c438bf9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_5c4acac9-3d9a-4e2a-83dd-284af4542154" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_5c4acac9-3d9a-4e2a-83dd-284af4542154" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_AmortizationPeriodNetActuarialLoss_196f5837-005b-48ab-a163-a31260f88e75" xlink:href="dlx-20231231.xsd#dlx_AmortizationPeriodNetActuarialLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_d1bc0637-4a67-4fa5-b5ad-51b186b04e01" xlink:to="loc_dlx_AmortizationPeriodNetActuarialLoss_196f5837-005b-48ab-a163-a31260f88e75" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSnetperiodicbenefitincomeandactuarialassumptionsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#POSTRETIREMENTBENEFITSnetperiodicbenefitincomeandactuarialassumptionsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSnetperiodicbenefitincomeandactuarialassumptionsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_63c6f0a7-ffe4-4fc7-b8c4-3ace87c57e1e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_eddff844-a544-443f-8d3d-dca9bebacb72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_63c6f0a7-ffe4-4fc7-b8c4-3ace87c57e1e" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_eddff844-a544-443f-8d3d-dca9bebacb72" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_a172514a-1973-444d-a122-20f3009bf7b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_eddff844-a544-443f-8d3d-dca9bebacb72" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_a172514a-1973-444d-a122-20f3009bf7b1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_a172514a-1973-444d-a122-20f3009bf7b1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_a172514a-1973-444d-a122-20f3009bf7b1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_a172514a-1973-444d-a122-20f3009bf7b1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_43d6346a-5cef-45a7-9bd8-6b2ec84243cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_a172514a-1973-444d-a122-20f3009bf7b1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_43d6346a-5cef-45a7-9bd8-6b2ec84243cf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_8541a8c5-fdc4-4686-8237-a63ca1cec1fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_43d6346a-5cef-45a7-9bd8-6b2ec84243cf" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_8541a8c5-fdc4-4686-8237-a63ca1cec1fe" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_f4386a0d-fa0b-4cd3-836f-e1a887e61c95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_43d6346a-5cef-45a7-9bd8-6b2ec84243cf" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_f4386a0d-fa0b-4cd3-836f-e1a887e61c95" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanFundingStatusAxis_3f3158ab-179f-4c60-9e3b-62bb5b66cefa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanFundingStatusAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_eddff844-a544-443f-8d3d-dca9bebacb72" xlink:to="loc_us-gaap_RetirementPlanFundingStatusAxis_3f3158ab-179f-4c60-9e3b-62bb5b66cefa" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanFundingStatusDomain_3f3158ab-179f-4c60-9e3b-62bb5b66cefa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanFundingStatusDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanFundingStatusAxis_3f3158ab-179f-4c60-9e3b-62bb5b66cefa" xlink:to="loc_us-gaap_RetirementPlanFundingStatusDomain_3f3158ab-179f-4c60-9e3b-62bb5b66cefa_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanFundingStatusDomain_8c67a320-32d3-4d38-b1bd-9101ad2b5a49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanFundingStatusDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanFundingStatusAxis_3f3158ab-179f-4c60-9e3b-62bb5b66cefa" xlink:to="loc_us-gaap_RetirementPlanFundingStatusDomain_8c67a320-32d3-4d38-b1bd-9101ad2b5a49" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ParticipantsUnderAge65Member_7d7e8efb-52be-4782-80f3-6701b6edb118" xlink:href="dlx-20231231.xsd#dlx_ParticipantsUnderAge65Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanFundingStatusDomain_8c67a320-32d3-4d38-b1bd-9101ad2b5a49" xlink:to="loc_dlx_ParticipantsUnderAge65Member_7d7e8efb-52be-4782-80f3-6701b6edb118" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ParticipantsAge65AndOlderMember_9686700b-e9d0-4181-a155-e1fc38a2d539" xlink:href="dlx-20231231.xsd#dlx_ParticipantsAge65AndOlderMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanFundingStatusDomain_8c67a320-32d3-4d38-b1bd-9101ad2b5a49" xlink:to="loc_dlx_ParticipantsAge65AndOlderMember_9686700b-e9d0-4181-a155-e1fc38a2d539" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_63c6f0a7-ffe4-4fc7-b8c4-3ace87c57e1e" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_6d428e57-dadb-4778-a889-75e446dcb6d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_6d428e57-dadb-4778-a889-75e446dcb6d5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList_9a89c7b7-10e4-4024-a0b0-0a642f682b70" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList_9a89c7b7-10e4-4024-a0b0-0a642f682b70" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_73ec7b2d-1291-4bea-9ba4-77aaaeb2a146" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_73ec7b2d-1291-4bea-9ba4-77aaaeb2a146" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList_3984bcd4-7615-4f15-a69a-65ccd5868548" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList_3984bcd4-7615-4f15-a69a-65ccd5868548" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_c7b06713-c490-4076-9422-06f25b581f65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_c7b06713-c490-4076-9422-06f25b581f65" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfPriorServiceCostCreditStatementOfIncomeOrComprehensiveIncomeExtensibleList_2990f861-2f2d-49f6-84e0-1982aa3c04bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfPriorServiceCostCreditStatementOfIncomeOrComprehensiveIncomeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfPriorServiceCostCreditStatementOfIncomeOrComprehensiveIncomeExtensibleList_2990f861-2f2d-49f6-84e0-1982aa3c04bd" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_29be704b-9b13-41ba-ad33-d67c9717c58e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_29be704b-9b13-41ba-ad33-d67c9717c58e" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleList_e33f9e25-3360-41b6-9956-862e4529a436" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleList_e33f9e25-3360-41b6-9956-862e4529a436" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_55d6a081-bac0-4a21-82ac-c0008da31ef5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_d1f7bd2c-14fb-43e6-b40e-291b68ba6e01" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_55d6a081-bac0-4a21-82ac-c0008da31ef5" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_63c6f0a7-ffe4-4fc7-b8c4-3ace87c57e1e" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_06c767c6-4b48-4e6e-bc81-d621b545d5cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_06c767c6-4b48-4e6e-bc81-d621b545d5cb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_928d2238-c400-43e3-aa8e-fc5a7cf613fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_928d2238-c400-43e3-aa8e-fc5a7cf613fc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_581faad2-db9b-4115-ad00-24c98f5a6851" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_581faad2-db9b-4115-ad00-24c98f5a6851" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract_b2384a7c-36a0-40ae-a7c2-0aac969ac025" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_66202549-092c-4351-a9ad-2aa3e299ecb7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract_b2384a7c-36a0-40ae-a7c2-0aac969ac025" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_0f9e9e64-b2fa-4385-8355-c20edb211948" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract_b2384a7c-36a0-40ae-a7c2-0aac969ac025" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_0f9e9e64-b2fa-4385-8355-c20edb211948" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_6aa65c82-9ed8-4e5c-81ea-12737cc37f7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract_b2384a7c-36a0-40ae-a7c2-0aac969ac025" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_6aa65c82-9ed8-4e5c-81ea-12737cc37f7b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_0c237ffa-ceb9-45bc-a124-144db43626a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract_b2384a7c-36a0-40ae-a7c2-0aac969ac025" xlink:to="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_0c237ffa-ceb9-45bc-a124-144db43626a5" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSplanassetsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#POSTRETIREMENTBENEFITSplanassetsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/POSTRETIREMENTBENEFITSplanassetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_695b6950-daba-472b-9a58-80cb431674d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_695b6950-daba-472b-9a58-80cb431674d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_695b6950-daba-472b-9a58-80cb431674d2" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7d9919c7-f3a1-4123-b61b-2ccfffcb21eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c99c1ebe-ea4d-4c7f-a665-80e908cf5a94" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7d9919c7-f3a1-4123-b61b-2ccfffcb21eb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_965518bb-a99e-4875-b38e-6415540eea02" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7d9919c7-f3a1-4123-b61b-2ccfffcb21eb" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_965518bb-a99e-4875-b38e-6415540eea02" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_b669bfc4-280b-449a-9317-7137f0a740c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_695b6950-daba-472b-9a58-80cb431674d2" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_b669bfc4-280b-449a-9317-7137f0a740c4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_b669bfc4-280b-449a-9317-7137f0a740c4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_b669bfc4-280b-449a-9317-7137f0a740c4" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_b669bfc4-280b-449a-9317-7137f0a740c4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_b669bfc4-280b-449a-9317-7137f0a740c4" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCorporateDebtSecuritiesMember_f781b688-560e-45c6-bcae-84ea753852b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticCorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_us-gaap_DomesticCorporateDebtSecuritiesMember_f781b688-560e-45c6-bcae-84ea753852b3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_63b20105-550a-4a2b-b608-2de062082a19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_63b20105-550a-4a2b-b608-2de062082a19" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember_3b133ebf-ea91-44cd-9fdb-927adcc1651a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember_3b133ebf-ea91-44cd-9fdb-927adcc1651a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesMember_eddc643d-0a59-4e1d-b4c9-01c9a48e7b64" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MortgageBackedSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_us-gaap_MortgageBackedSecuritiesMember_eddc643d-0a59-4e1d-b4c9-01c9a48e7b64" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DefinedbenefitplanequitysecuritiessmallandmidcapMember_a3dc5d62-9e53-4826-a868-4e47fdedccb6" xlink:href="dlx-20231231.xsd#dlx_DefinedbenefitplanequitysecuritiessmallandmidcapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_dlx_DefinedbenefitplanequitysecuritiessmallandmidcapMember_a3dc5d62-9e53-4826-a868-4e47fdedccb6" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_76744834-1a76-4e10-a19f-ac77023cecaf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FixedIncomeSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_6878260d-958b-43a5-88f1-78911344fcac" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_76744834-1a76-4e10-a19f-ac77023cecaf" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2d9dd7a2-d895-4e0a-9618-a1ab2a114659" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_695b6950-daba-472b-9a58-80cb431674d2" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2d9dd7a2-d895-4e0a-9618-a1ab2a114659" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d9dd7a2-d895-4e0a-9618-a1ab2a114659_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2d9dd7a2-d895-4e0a-9618-a1ab2a114659" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2d9dd7a2-d895-4e0a-9618-a1ab2a114659_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2d9dd7a2-d895-4e0a-9618-a1ab2a114659" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_57f5f8e6-d9f7-4ec0-bfe4-791468717fbe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_57f5f8e6-d9f7-4ec0-bfe4-791468717fbe" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c782de6c-1d02-40ff-9ff1-5a412b6ada8f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c782de6c-1d02-40ff-9ff1-5a412b6ada8f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_ba6a8bea-dd0c-4019-92e3-0f1d5a11d9cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_ba6a8bea-dd0c-4019-92e3-0f1d5a11d9cf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_36e4a423-ab80-47c1-aabc-5ce70c9e0f38" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4a3bd2ba-773d-45ea-8904-2f762e4720a3" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_36e4a423-ab80-47c1-aabc-5ce70c9e0f38" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanTypeExtensibleList_a92c564e-8d23-458f-b977-2a9b3700f9d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanTypeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:to="loc_us-gaap_DefinedBenefitPlanTypeExtensibleList_a92c564e-8d23-458f-b977-2a9b3700f9d9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_f3b7c33f-c127-4be9-a864-bf9f762d61c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_f3b7c33f-c127-4be9-a864-bf9f762d61c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_75816212-3f48-4431-9248-fb7f868304d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_75816212-3f48-4431-9248-fb7f868304d1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_5baf2fdd-f9c9-4639-9885-b40728ab098d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a8ffd614-5f5d-4d18-994b-6dd30a811499" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_5baf2fdd-f9c9-4639-9885-b40728ab098d" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/POSTRETIREMENTBENEFITScashflowsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#POSTRETIREMENTBENEFITScashflowsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/POSTRETIREMENTBENEFITScashflowsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_dcfafb2f-9b21-4e3d-beb4-20786c9c4d7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_dcfafb2f-9b21-4e3d-beb4-20786c9c4d7f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_bbc95051-350c-47bf-b3d7-039ad8e27766" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_dcfafb2f-9b21-4e3d-beb4-20786c9c4d7f" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_bbc95051-350c-47bf-b3d7-039ad8e27766" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_bbc95051-350c-47bf-b3d7-039ad8e27766_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bbc95051-350c-47bf-b3d7-039ad8e27766" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_bbc95051-350c-47bf-b3d7-039ad8e27766_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_03c74198-616e-4d6e-b2a7-ed8d1fe7d7c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bbc95051-350c-47bf-b3d7-039ad8e27766" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_03c74198-616e-4d6e-b2a7-ed8d1fe7d7c6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_35f1b680-bd50-4591-9299-5a9ed924e54d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_03c74198-616e-4d6e-b2a7-ed8d1fe7d7c6" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_35f1b680-bd50-4591-9299-5a9ed924e54d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_82596cc4-fc98-4882-8bc1-f8b960c46999" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_03c74198-616e-4d6e-b2a7-ed8d1fe7d7c6" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_82596cc4-fc98-4882-8bc1-f8b960c46999" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanTypeExtensibleList_dd29e164-9770-4d91-9af5-48909d2502e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanTypeExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:to="loc_us-gaap_DefinedBenefitPlanTypeExtensibleList_dd29e164-9770-4d91-9af5-48909d2502e9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_4be1e44a-25b2-46a5-92bf-ed1492856ee2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_4be1e44a-25b2-46a5-92bf-ed1492856ee2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashSurrenderValueOfLifeInsurance_48371421-dace-4e48-96a3-e55a91a346fd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashSurrenderValueOfLifeInsurance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:to="loc_us-gaap_CashSurrenderValueOfLifeInsurance_48371421-dace-4e48-96a3-e55a91a346fd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_c3d617d9-dfea-4cda-bf5c-6df057a137ce" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_13e4c112-1b54-49d0-86cb-98f21f498061" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_13e4c112-1b54-49d0-86cb-98f21f498061" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_06fdcc98-c8f8-42a1-9ee1-9ca6e91b5f74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_06fdcc98-c8f8-42a1-9ee1-9ca6e91b5f74" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_8c613fa3-198a-49a8-9e88-4abd92b9ad94" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_8c613fa3-198a-49a8-9e88-4abd92b9ad94" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_e795f127-28ea-4521-b0fd-e29be615838f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_e795f127-28ea-4521-b0fd-e29be615838f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_4e84d9dc-3e2b-4087-be9c-e27f64a0761c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_4e84d9dc-3e2b-4087-be9c-e27f64a0761c" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_70871820-fea1-43d0-84e6-88c498ef8bf6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_b18d5d81-cc24-4d46-a7af-acfb37bb20dc" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_70871820-fea1-43d0-84e6-88c498ef8bf6" xlink:type="arc" order="6"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/POSTRETIREMENTBENEFITS401kPlanDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#POSTRETIREMENTBENEFITS401kPlanDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/POSTRETIREMENTBENEFITS401kPlanDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanTable_8e74b8ad-3494-4def-8bca-e64571d18736" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_us-gaap_DefinedContributionPlanTable_8e74b8ad-3494-4def-8bca-e64571d18736" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_3e4da29f-b304-40e5-af89-9d45678c5a82" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_8e74b8ad-3494-4def-8bca-e64571d18736" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_3e4da29f-b304-40e5-af89-9d45678c5a82" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3e4da29f-b304-40e5-af89-9d45678c5a82_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_3e4da29f-b304-40e5-af89-9d45678c5a82" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3e4da29f-b304-40e5-af89-9d45678c5a82_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_3e4da29f-b304-40e5-af89-9d45678c5a82" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_A401Kplanfirst1ofwagescontributedbyemployeeMember_00825d46-05a2-46fa-aacf-a5243daab051" xlink:href="dlx-20231231.xsd#dlx_A401Kplanfirst1ofwagescontributedbyemployeeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:to="loc_dlx_A401Kplanfirst1ofwagescontributedbyemployeeMember_00825d46-05a2-46fa-aacf-a5243daab051" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_A401Kplannext5ofwagescontributedbyemployeeMember_d9ec4d3d-8675-4e16-b7cc-9056e01bfa18" xlink:href="dlx-20231231.xsd#dlx_A401Kplannext5ofwagescontributedbyemployeeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:to="loc_dlx_A401Kplannext5ofwagescontributedbyemployeeMember_d9ec4d3d-8675-4e16-b7cc-9056e01bfa18" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_A401Kplan100employermatchMember_52ff35b4-8a58-495b-8034-91f93e9f4b60" xlink:href="dlx-20231231.xsd#dlx_A401Kplan100employermatchMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:to="loc_dlx_A401Kplan100employermatchMember_52ff35b4-8a58-495b-8034-91f93e9f4b60" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_A401Kplan50employermatchMember_a840ddda-e6bb-4892-8f99-777ba59aea43" xlink:href="dlx-20231231.xsd#dlx_A401Kplan50employermatchMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7e1694ef-263e-44a2-9b5c-3f4f8e679578" xlink:to="loc_dlx_A401Kplan50employermatchMember_a840ddda-e6bb-4892-8f99-777ba59aea43" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_9522465b-34b3-4bf5-80e1-90228cc75263" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_8e74b8ad-3494-4def-8bca-e64571d18736" xlink:to="loc_srt_RangeAxis_9522465b-34b3-4bf5-80e1-90228cc75263" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9522465b-34b3-4bf5-80e1-90228cc75263_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_9522465b-34b3-4bf5-80e1-90228cc75263" xlink:to="loc_srt_RangeMember_9522465b-34b3-4bf5-80e1-90228cc75263_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d1867348-ef6f-4804-a5a7-c67e32d8c14d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_9522465b-34b3-4bf5-80e1-90228cc75263" xlink:to="loc_srt_RangeMember_d1867348-ef6f-4804-a5a7-c67e32d8c14d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e7a53d00-d5f1-4319-9cfe-ab0ae275e6a4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d1867348-ef6f-4804-a5a7-c67e32d8c14d" xlink:to="loc_srt_MaximumMember_e7a53d00-d5f1-4319-9cfe-ab0ae275e6a4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_1c2b0d08-df48-40f2-a7e1-958b54bc89ce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_1c2b0d08-df48-40f2-a7e1-958b54bc89ce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_4a5b9603-02c0-4a41-9a41-5248f693da9f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_4a5b9603-02c0-4a41-9a41-5248f693da9f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_b5a7a245-d2dd-4edb-ba24-4fc61549ce17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_6d254e60-be81-42e9-a64b-94c4f9d6ca49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanCostRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_6d254e60-be81-42e9-a64b-94c4f9d6ca49" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_dc23ce1d-0b36-45e2-9133-667f53e09c04" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_dc23ce1d-0b36-45e2-9133-667f53e09c04" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DefinedContributionServiceRequirement_d8aac038-2891-4d00-9026-3fe69b828bfb" xlink:href="dlx-20231231.xsd#dlx_DefinedContributionServiceRequirement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_a12f1e28-cd0a-4aa2-b2f0-9c7563fe8327" xlink:to="loc_dlx_DefinedContributionServiceRequirement_d8aac038-2891-4d00-9026-3fe69b828bfb" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/DEBTDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#DEBTDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/DEBTDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_f81d826f-c661-4745-b328-f4c65c963bb4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_DebtInstrumentTable_f81d826f-c661-4745-b328-f4c65c963bb4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_9e4ed50c-cad2-4516-aba5-b6088418ed15" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f81d826f-c661-4745-b328-f4c65c963bb4" xlink:to="loc_us-gaap_DebtInstrumentAxis_9e4ed50c-cad2-4516-aba5-b6088418ed15" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9e4ed50c-cad2-4516-aba5-b6088418ed15_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9e4ed50c-cad2-4516-aba5-b6088418ed15" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9e4ed50c-cad2-4516-aba5-b6088418ed15_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9e4ed50c-cad2-4516-aba5-b6088418ed15" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_TermLoanFacilityMember_7db3cd39-e7e7-4424-9ecb-277dfa308d55" xlink:href="dlx-20231231.xsd#dlx_TermLoanFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:to="loc_dlx_TermLoanFacilityMember_7db3cd39-e7e7-4424-9ecb-277dfa308d55" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_b13f223a-2a31-4e73-bab0-b2382ce69407" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:to="loc_us-gaap_UnsecuredDebtMember_b13f223a-2a31-4e73-bab0-b2382ce69407" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_ae351599-0bce-4b17-9e7e-0c5cdfcdceeb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_ae351599-0bce-4b17-9e7e-0c5cdfcdceeb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_SwingLineSubFacilityMember_9e3c91fd-f923-47bd-8678-a4485818cc68" xlink:href="dlx-20231231.xsd#dlx_SwingLineSubFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:to="loc_dlx_SwingLineSubFacilityMember_9e3c91fd-f923-47bd-8678-a4485818cc68" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_ebafd2e3-7e95-42a8-89fe-273f4392772e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LetterOfCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3f9155b7-df8a-4e39-a498-4c3cd0de592b" xlink:to="loc_us-gaap_LetterOfCreditMember_ebafd2e3-7e95-42a8-89fe-273f4392772e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_21820d5c-8b50-4db6-9328-00d3fdfd5bc6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f81d826f-c661-4745-b328-f4c65c963bb4" xlink:to="loc_srt_RangeAxis_21820d5c-8b50-4db6-9328-00d3fdfd5bc6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_21820d5c-8b50-4db6-9328-00d3fdfd5bc6_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_21820d5c-8b50-4db6-9328-00d3fdfd5bc6" xlink:to="loc_srt_RangeMember_21820d5c-8b50-4db6-9328-00d3fdfd5bc6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_eafae76f-2d88-41f2-8daa-69875f1db2e3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_21820d5c-8b50-4db6-9328-00d3fdfd5bc6" xlink:to="loc_srt_RangeMember_eafae76f-2d88-41f2-8daa-69875f1db2e3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_9e00ca69-7e01-43dc-8b62-a504e3f3c7d3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_eafae76f-2d88-41f2-8daa-69875f1db2e3" xlink:to="loc_srt_MinimumMember_9e00ca69-7e01-43dc-8b62-a504e3f3c7d3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_50f21f91-4f4b-4b43-9725-a8bf1bad21cc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_eafae76f-2d88-41f2-8daa-69875f1db2e3" xlink:to="loc_srt_MaximumMember_50f21f91-4f4b-4b43-9725-a8bf1bad21cc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_969644ba-fb70-436e-9336-7b00913d2044" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementScenarioAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f81d826f-c661-4745-b328-f4c65c963bb4" xlink:to="loc_srt_StatementScenarioAxis_969644ba-fb70-436e-9336-7b00913d2044" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_969644ba-fb70-436e-9336-7b00913d2044_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_969644ba-fb70-436e-9336-7b00913d2044" xlink:to="loc_srt_ScenarioUnspecifiedDomain_969644ba-fb70-436e-9336-7b00913d2044_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_c701d86c-008d-452f-899f-ec07c811d680" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_969644ba-fb70-436e-9336-7b00913d2044" xlink:to="loc_srt_ScenarioUnspecifiedDomain_c701d86c-008d-452f-899f-ec07c811d680" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_716da3e1-e657-43b2-a3b3-826d9eb8ef87" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioForecastMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_c701d86c-008d-452f-899f-ec07c811d680" xlink:to="loc_srt_ScenarioForecastMember_716da3e1-e657-43b2-a3b3-826d9eb8ef87" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_54552bd4-fdcd-4fff-a81d-6610399aa00d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_54552bd4-fdcd-4fff-a81d-6610399aa00d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_64bf67ce-ebe1-402e-af69-30cb3113f99e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_64bf67ce-ebe1-402e-af69-30cb3113f99e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_84be969e-4d02-4bdb-89d0-4674f87d48fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_84be969e-4d02-4bdb-89d0-4674f87d48fa" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_91215bee-0c39-47f0-89e8-379cc3239a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_LongTermDebtCurrent_91215bee-0c39-47f0-89e8-379cc3239a0b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_660daf37-3523-45ca-800b-1f08873ab63e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_660daf37-3523-45ca-800b-1f08873ab63e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaturitiesOfLongTermDebtAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_6d77f285-8f30-4bd8-9f46-4dccd133a7df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_6d77f285-8f30-4bd8-9f46-4dccd133a7df" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2ae868ea-2a6f-4a78-91be-92039267c6e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_2ae868ea-2a6f-4a78-91be-92039267c6e5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_d60ad226-f682-45e4-98b1-7e6e287b0398" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_d60ad226-f682-45e4-98b1-7e6e287b0398" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_934cbd10-7c35-45fc-a08e-614b7ae14b70" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_934cbd10-7c35-45fc-a08e-614b7ae14b70" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_d5e46201-0807-43b4-ab20-ec678ed4d29d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_d5e46201-0807-43b4-ab20-ec678ed4d29d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6088f529-0475-4c34-b294-c64da54621c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_63fb3045-296a-4a35-b1e3-222fbb3d8476" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6088f529-0475-4c34-b294-c64da54621c8" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_22d038a2-b1d4-4c7d-8895-d1437570a9ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_22d038a2-b1d4-4c7d-8895-d1437570a9ca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_a996dfd2-b0a5-4b22-8d58-46e0a150a9df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_a996dfd2-b0a5-4b22-8d58-46e0a150a9df" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_c90ad838-fb99-43f4-a129-31c6379a1799" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_c90ad838-fb99-43f4-a129-31c6379a1799" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_6ef4051f-9770-45ce-930d-1d46189f62b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_6ef4051f-9770-45ce-930d-1d46189f62b7" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_3d0ac981-acea-4686-ba6d-4af93a7580b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_3d0ac981-acea-4686-ba6d-4af93a7580b4" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_58acd72a-4870-4743-b3ea-3542adac7a48" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_DerivativeNotionalAmount_58acd72a-4870-4743-b3ea-3542adac7a48" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ConsolidatedTotalLeverageRatio_2d28fdf4-7512-46b1-8111-6251d572e02a" xlink:href="dlx-20231231.xsd#dlx_ConsolidatedTotalLeverageRatio"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_dlx_ConsolidatedTotalLeverageRatio_2d28fdf4-7512-46b1-8111-6251d572e02a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_MaximumConsolidatedSecuredLeverageRatio_8aadf78c-facb-4c6c-87a2-67c8f95e0b37" xlink:href="dlx-20231231.xsd#dlx_MaximumConsolidatedSecuredLeverageRatio"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_dlx_MaximumConsolidatedSecuredLeverageRatio_8aadf78c-facb-4c6c-87a2-67c8f95e0b37" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_MinimumInterestCoverageRatio_22c61f9f-abd3-4655-9d9a-86621443ce41" xlink:href="dlx-20231231.xsd#dlx_MinimumInterestCoverageRatio"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_dlx_MinimumInterestCoverageRatio_22c61f9f-abd3-4655-9d9a-86621443ce41" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ConsolidatedTotalLeverageRatioLimitingPermittedPayments_5c2eef86-05b5-4e5b-91e4-8d3cc3f797a5" xlink:href="dlx-20231231.xsd#dlx_ConsolidatedTotalLeverageRatioLimitingPermittedPayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_dlx_ConsolidatedTotalLeverageRatioLimitingPermittedPayments_5c2eef86-05b5-4e5b-91e4-8d3cc3f797a5" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PermittedPayments_ea71bc16-406e-4d02-a6c1-d71214460dfd" xlink:href="dlx-20231231.xsd#dlx_PermittedPayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_dlx_PermittedPayments_ea71bc16-406e-4d02-a6c1-d71214460dfd" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_709d8f1e-7e57-463f-b7be-7017952672d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_709d8f1e-7e57-463f-b7be-7017952672d1" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_a515ee2b-867a-4d47-8341-1a7e6de84917" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityAbstract_f8039667-889d-4942-9b55-c31fe3d445a9" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_a515ee2b-867a-4d47-8341-1a7e6de84917" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cd6ebe79-39ff-4608-958b-ae9010151c6c" xlink:to="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_1b2f6489-23ce-464b-a551-5a26526cf4e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtPercentageBearingFixedInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_1b2f6489-23ce-464b-a551-5a26526cf4e2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_cc167ac2-74c3-4b8c-9390-ec27a3799bd0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:to="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_cc167ac2-74c3-4b8c-9390-ec27a3799bd0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9cef86c7-6d7d-47a9-b875-5235050fba99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9cef86c7-6d7d-47a9-b875-5235050fba99" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_60d8616c-2692-4a88-ab48-834a8e2c2baa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentRepurchasedFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:to="loc_us-gaap_DebtInstrumentRepurchasedFaceAmount_60d8616c-2692-4a88-ab48-834a8e2c2baa" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnRepurchaseOfDebtInstrument_e0d1e446-7f9d-42ea-a9d1-8da7593326df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnRepurchaseOfDebtInstrument"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract_fce7f689-650e-4641-94d6-00bf3fbd50e6" xlink:to="loc_us-gaap_GainLossOnRepurchaseOfDebtInstrument_e0d1e446-7f9d-42ea-a9d1-8da7593326df" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/LEASESDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#LEASESDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/LEASESDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_6ad3d93b-f836-493f-9f45-4c8c78457797" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_6ad3d93b-f836-493f-9f45-4c8c78457797" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_cda50179-3231-4e78-bf4f-2ba268c667a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_6ad3d93b-f836-493f-9f45-4c8c78457797" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_cda50179-3231-4e78-bf4f-2ba268c667a1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cda50179-3231-4e78-bf4f-2ba268c667a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_cda50179-3231-4e78-bf4f-2ba268c667a1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cda50179-3231-4e78-bf4f-2ba268c667a1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a44e143a-3cc7-4462-9c5e-8890909efa9f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_cda50179-3231-4e78-bf4f-2ba268c667a1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a44e143a-3cc7-4462-9c5e-8890909efa9f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_141a0d05-87b6-4c95-abed-9a6c8987afc4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a44e143a-3cc7-4462-9c5e-8890909efa9f" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_141a0d05-87b6-4c95-abed-9a6c8987afc4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2e6f27cc-235e-4440-9cc9-56f7e10d84b4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_6ad3d93b-f836-493f-9f45-4c8c78457797" xlink:to="loc_srt_RangeAxis_2e6f27cc-235e-4440-9cc9-56f7e10d84b4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2e6f27cc-235e-4440-9cc9-56f7e10d84b4_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2e6f27cc-235e-4440-9cc9-56f7e10d84b4" xlink:to="loc_srt_RangeMember_2e6f27cc-235e-4440-9cc9-56f7e10d84b4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1430c81a-58d6-4147-968b-75da4f11a9cd" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2e6f27cc-235e-4440-9cc9-56f7e10d84b4" xlink:to="loc_srt_RangeMember_1430c81a-58d6-4147-968b-75da4f11a9cd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_218c2b75-824b-4025-b588-71f30b2c7263" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1430c81a-58d6-4147-968b-75da4f11a9cd" xlink:to="loc_srt_MaximumMember_218c2b75-824b-4025-b588-71f30b2c7263" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_b235b5d2-1f11-46fe-800b-41b877b5330e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_6ad3d93b-f836-493f-9f45-4c8c78457797" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_b235b5d2-1f11-46fe-800b-41b877b5330e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b235b5d2-1f11-46fe-800b-41b877b5330e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b235b5d2-1f11-46fe-800b-41b877b5330e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b235b5d2-1f11-46fe-800b-41b877b5330e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4163c61d-2668-40ec-a888-1b7aa5351667" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b235b5d2-1f11-46fe-800b-41b877b5330e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4163c61d-2668-40ec-a888-1b7aa5351667" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FirstAmericanMember_4463a702-b07b-466f-b7f5-cc21b174a265" xlink:href="dlx-20231231.xsd#dlx_FirstAmericanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4163c61d-2668-40ec-a888-1b7aa5351667" xlink:to="loc_dlx_FirstAmericanMember_4463a702-b07b-466f-b7f5-cc21b174a265" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeasesOperatingAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Remainingleaseterm_dba77b17-cf27-4c88-8da1-fbdf3a9dc711" xlink:href="dlx-20231231.xsd#dlx_Remainingleaseterm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_dlx_Remainingleaseterm_dba77b17-cf27-4c88-8da1-fbdf3a9dc711" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_707fdebd-0dc9-4d16-b96c-d62727d0fe4a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_707fdebd-0dc9-4d16-b96c-d62727d0fe4a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_d79e6260-0416-4f20-8e69-d9e996dc1546" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_d79e6260-0416-4f20-8e69-d9e996dc1546" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_4940ffed-5c79-47a9-9d06-cce6f2ec6f85" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_4940ffed-5c79-47a9-9d06-cce6f2ec6f85" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_19b1af31-cf29-4308-8f77-741b8bc71032" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_19b1af31-cf29-4308-8f77-741b8bc71032" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_d000c318-ae1c-45d5-bfb9-405f6b6419ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseLiability_d000c318-ae1c-45d5-bfb9-405f6b6419ec" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_a201d10c-4e20-43d8-be40-90b931429f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_a201d10c-4e20-43d8-be40-90b931429f2e" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_debc1da0-230e-4b26-b365-36ea918779e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_b54b653a-f3ce-4c0b-a54b-9f5779c89493" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_debc1da0-230e-4b26-b365-36ea918779e5" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeFinanceLeaseDescriptionAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_746e8070-f6c4-4f76-a38d-e2b65e45c7a2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_746e8070-f6c4-4f76-a38d-e2b65e45c7a2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization_ff6edab6-57ee-4092-b63a-ad3b6f6587c0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization_ff6edab6-57ee-4092-b63a-ad3b6f6587c0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_3be171be-0316-483a-ad35-b6cd9bf452c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_3be171be-0316-483a-ad35-b6cd9bf452c8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_36332ca4-e060-4bd4-b31c-4c9a924fcf44" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_36332ca4-e060-4bd4-b31c-4c9a924fcf44" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_285e907c-01c9-4c35-9861-209495ec7d20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_285e907c-01c9-4c35-9861-209495ec7d20" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_4bcb5e0a-4b5a-4b7b-889c-01ea96698eab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_4bcb5e0a-4b5a-4b7b-889c-01ea96698eab" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_06b6c601-2a22-477a-ab37-c1b29cc7486f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_06b6c601-2a22-477a-ab37-c1b29cc7486f" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_3326a044-6c99-4103-b241-2cd165554395" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_3326a044-6c99-4103-b241-2cd165554395" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_9a882434-7e11-46c4-9ab6-999bb7c669ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseLiability_9a882434-7e11-46c4-9ab6-999bb7c669ed" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_d6767f45-f560-4ab1-a6c4-9cdb03610b7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeFinanceLeaseRemainingLeaseTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_LesseeFinanceLeaseRemainingLeaseTerm_d6767f45-f560-4ab1-a6c4-9cdb03610b7c" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_4b13ccb7-ea24-4a6e-bbe9-0e8296dfb827" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeFinanceLeaseDescriptionAbstract_934acf0b-dab0-4ace-87bf-09127e1e5fb9" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_4b13ccb7-ea24-4a6e-bbe9-0e8296dfb827" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseCostAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_11b0a4d3-c7a0-40e4-a872-399314352768" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:to="loc_us-gaap_OperatingLeaseCost_11b0a4d3-c7a0-40e4-a872-399314352768" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_da58e430-5477-46ae-b8ed-c06e46652707" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_da58e430-5477-46ae-b8ed-c06e46652707" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_af44af1d-41f9-4b8a-89a0-3e033e1f26ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseInterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_af44af1d-41f9-4b8a-89a0-3e033e1f26ca" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_TotalFinanceLeaseCost_d629090b-9bee-45e7-bbed-86269d1b8da4" xlink:href="dlx-20231231.xsd#dlx_TotalFinanceLeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseCostAbstract_5a5b87ea-f424-4fea-bfb0-40b3a9491fc6" xlink:to="loc_dlx_TotalFinanceLeaseCost_d629090b-9bee-45e7-bbed-86269d1b8da4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalCashFlowElementsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_92b8c348-dc9f-4289-891f-0ed3e1231273" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_92b8c348-dc9f-4289-891f-0ed3e1231273" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_d823c34b-f90a-451f-b02a-6e3c16cb99b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_d823c34b-f90a-451f-b02a-6e3c16cb99b4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_55cabc9f-3816-441c-aaf6-f378a8dcf510" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeasePayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_OperatingLeasePayments_55cabc9f-3816-441c-aaf6-f378a8dcf510" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestPaymentOnLiability_965273e3-8233-4313-b3f5-d4e75a558290" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseInterestPaymentOnLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_FinanceLeaseInterestPaymentOnLiability_965273e3-8233-4313-b3f5-d4e75a558290" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_de773260-d1f3-49e1-8378-e98d3701dd41" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_de773260-d1f3-49e1-8378-e98d3701dd41" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_c1b51366-b18f-4269-b777-0d2a1a104a0c" xlink:href="dlx-20231231.xsd#dlx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_dlx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_c1b51366-b18f-4269-b777-0d2a1a104a0c" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncentiveFromLessor_7b6fa9db-b8ce-47d9-94f7-149cbfcf61cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncentiveFromLessor"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAbstract_b3c1ab12-e8ee-4f16-9a6f-c6061cc3fe33" xlink:to="loc_us-gaap_IncentiveFromLessor_7b6fa9db-b8ce-47d9-94f7-149cbfcf61cf" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_c710c987-5b2f-4b88-ac71-529b5b91b169" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_c710c987-5b2f-4b88-ac71-529b5b91b169" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_bb4688cb-4f56-4a81-ae38-b4014faf2d14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_bb4688cb-4f56-4a81-ae38-b4014faf2d14" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_891b8a1b-cd5d-40bc-850c-7a6049eedb20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_891b8a1b-cd5d-40bc-850c-7a6049eedb20" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_7a59adcf-972a-413a-96e1-7c093bc28a78" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_7a59adcf-972a-413a-96e1-7c093bc28a78" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_84d45d67-df9a-4940-b783-a782cdea46ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_84d45d67-df9a-4940-b783-a782cdea46ae" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_d1a4e2f0-be41-4be2-866d-59fea41ac1a7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_d1a4e2f0-be41-4be2-866d-59fea41ac1a7" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_22dfa7fb-4a4b-4326-979f-b97c6f6b4529" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_22dfa7fb-4a4b-4326-979f-b97c6f6b4529" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_99aa95b0-ac4d-4d99-9067-b6de0ed265c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_d93b7466-34ff-4ffc-9262-ca43e82b3075" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_99aa95b0-ac4d-4d99-9067-b6de0ed265c2" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_3c3acfd1-14e4-455d-b3ea-c77e5f01e681" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseLiability"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_81aafb90-386d-4dfd-a32e-6ef6cebd07fb" xlink:to="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_af987a66-c99b-4621-8679-a6ab7f91327d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_af987a66-c99b-4621-8679-a6ab7f91327d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_6943dbb4-755c-47aa-aa4b-bce7cab2f0a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_6943dbb4-755c-47aa-aa4b-bce7cab2f0a5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_34f2159e-f74c-46f3-9198-0b4714a003ef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_34f2159e-f74c-46f3-9198-0b4714a003ef" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_f24c3569-0f6e-4aac-bfa9-333844335188" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_f24c3569-0f6e-4aac-bfa9-333844335188" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_77c1c6cd-49d7-4038-b736-934079fede57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_77c1c6cd-49d7-4038-b736-934079fede57" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_ac61f503-1824-4109-a12d-5fdced295a40" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_ac61f503-1824-4109-a12d-5fdced295a40" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_cca6246a-b31f-4beb-acda-0c9ebbc5382b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_cca6246a-b31f-4beb-acda-0c9ebbc5382b" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_5ed1f809-90ec-44ee-bc2d-d436baedf91a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_9facc511-b322-4542-80f8-d1c5faddf42e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_5ed1f809-90ec-44ee-bc2d-d436baedf91a" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_716b0a6f-19da-458a-a744-2fe241cbd956" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinanceLeaseLiability"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/SHAREHOLDERSEQUITYDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#SHAREHOLDERSEQUITYDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/SHAREHOLDERSEQUITYDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_41f2fea7-1362-4602-945b-fdc5b0b4d5d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:to="loc_us-gaap_StatementTable_41f2fea7-1362-4602-945b-fdc5b0b4d5d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_e7e32aea-b261-4ed5-a69b-0103e9314fd9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_41f2fea7-1362-4602-945b-fdc5b0b4d5d2" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_e7e32aea-b261-4ed5-a69b-0103e9314fd9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e7e32aea-b261-4ed5-a69b-0103e9314fd9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e7e32aea-b261-4ed5-a69b-0103e9314fd9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e7e32aea-b261-4ed5-a69b-0103e9314fd9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a5cc0b79-b006-42fd-85c5-4ea01658a972" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e7e32aea-b261-4ed5-a69b-0103e9314fd9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a5cc0b79-b006-42fd-85c5-4ea01658a972" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FirstAmericanMember_d19ad7d9-1dc2-4865-803c-ae0a316d0dff" xlink:href="dlx-20231231.xsd#dlx_FirstAmericanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a5cc0b79-b006-42fd-85c5-4ea01658a972" xlink:to="loc_dlx_FirstAmericanMember_d19ad7d9-1dc2-4865-803c-ae0a316d0dff" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_e8853b33-52df-46ed-ba7f-01ea813f68e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_e8853b33-52df-46ed-ba7f-01ea813f68e0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_ce0cbd67-73b1-4c69-babb-e5b1e1bb813d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_ce0cbd67-73b1-4c69-babb-e5b1e1bb813d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesOther_d46e12c9-63cf-4cfc-8a7f-7c267dbdb830" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesOther_d46e12c9-63cf-4cfc-8a7f-7c267dbdb830" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueOther_2d3e7be2-e72b-45ab-9dec-c59f34f5d258" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_43174bcc-d6cf-45a3-9835-634ed87ffc04" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueOther_2d3e7be2-e72b-45ab-9dec-c59f34f5d258" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/BUSINESSSEGMENTINFORMATIONsegmentresultsDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#BUSINESSSEGMENTINFORMATIONsegmentresultsDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/BUSINESSSEGMENTINFORMATIONsegmentresultsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_1b4b3cde-889d-4390-b386-098698b315fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_1b4b3cde-889d-4390-b386-098698b315fa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_1b4b3cde-889d-4390-b386-098698b315fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_1b4b3cde-889d-4390-b386-098698b315fa" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_1b4b3cde-889d-4390-b386-098698b315fa_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_89d8a88d-2413-4adf-94ef-4dd33125b782" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_1b4b3cde-889d-4390-b386-098698b315fa" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_89d8a88d-2413-4adf-94ef-4dd33125b782" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_dad0c939-06d5-43b7-a058-dd41e32ef479" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CustomerConcentrationRiskMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_89d8a88d-2413-4adf-94ef-4dd33125b782" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_dad0c939-06d5-43b7-a058-dd41e32ef479" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_cc10a973-8c07-4dee-941d-3b14d773484d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_cc10a973-8c07-4dee-941d-3b14d773484d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_cc10a973-8c07-4dee-941d-3b14d773484d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_cc10a973-8c07-4dee-941d-3b14d773484d" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_cc10a973-8c07-4dee-941d-3b14d773484d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8ec8aedf-b230-48a6-8748-6fe7a6525adc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_cc10a973-8c07-4dee-941d-3b14d773484d" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8ec8aedf-b230-48a6-8748-6fe7a6525adc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_989ee08e-6381-497b-aeb2-7d9b79fe16bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SalesRevenueNetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8ec8aedf-b230-48a6-8748-6fe7a6525adc" xlink:to="loc_us-gaap_SalesRevenueNetMember_989ee08e-6381-497b-aeb2-7d9b79fe16bb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MajorCustomersAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:to="loc_srt_MajorCustomersAxis_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_NameOfMajorCustomerDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0" xlink:to="loc_srt_NameOfMajorCustomerDomain_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_4bc39b02-16ae-4502-8565-15b47773e012" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_NameOfMajorCustomerDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_6df4fd59-05af-4cb6-aeb9-c2f3245f46f0" xlink:to="loc_srt_NameOfMajorCustomerDomain_4bc39b02-16ae-4502-8565-15b47773e012" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_MajorCustomersMember_f9cd9a3d-0b6b-44cf-833b-7fbb82b736fa" xlink:href="dlx-20231231.xsd#dlx_MajorCustomersMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_4bc39b02-16ae-4502-8565-15b47773e012" xlink:to="loc_dlx_MajorCustomersMember_f9cd9a3d-0b6b-44cf-833b-7fbb82b736fa" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:to="loc_srt_ConsolidationItemsAxis_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e" xlink:to="loc_srt_ConsolidationItemsDomain_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_3a6c6c26-af58-49b4-964e-4fb98b8b805f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_0ed7f832-b0c2-42fe-9dc5-a421bf4e344e" xlink:to="loc_srt_ConsolidationItemsDomain_3a6c6c26-af58-49b4-964e-4fb98b8b805f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_02feaa95-09e4-45c3-8877-a880f0fde0f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3a6c6c26-af58-49b4-964e-4fb98b8b805f" xlink:to="loc_us-gaap_OperatingSegmentsMember_02feaa95-09e4-45c3-8877-a880f0fde0f5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_962ed135-251c-498b-b7f8-fe33aaeea861" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3a6c6c26-af58-49b4-964e-4fb98b8b805f" xlink:to="loc_us-gaap_CorporateNonSegmentMember_962ed135-251c-498b-b7f8-fe33aaeea861" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2f94081e-8d8d-4920-9024-585d11ab4823" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fd22c8e5-2200-4535-9453-60e78a2cb8fa" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2f94081e-8d8d-4920-9024-585d11ab4823" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2f94081e-8d8d-4920-9024-585d11ab4823_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2f94081e-8d8d-4920-9024-585d11ab4823" xlink:to="loc_us-gaap_SegmentDomain_2f94081e-8d8d-4920-9024-585d11ab4823_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2f94081e-8d8d-4920-9024-585d11ab4823" xlink:to="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PaymentsMember_fce7bce8-bfeb-4df5-9e58-8ac6b7ce3806" xlink:href="dlx-20231231.xsd#dlx_PaymentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:to="loc_dlx_PaymentsMember_fce7bce8-bfeb-4df5-9e58-8ac6b7ce3806" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DataSolutionsMember_6348a411-a39d-4f42-9ced-3d5f8af6f922" xlink:href="dlx-20231231.xsd#dlx_DataSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:to="loc_dlx_DataSolutionsMember_6348a411-a39d-4f42-9ced-3d5f8af6f922" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsMember_6e6fe4d7-48d3-4647-8be8-811235140ec1" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:to="loc_dlx_PromotionalSolutionsMember_6e6fe4d7-48d3-4647-8be8-811235140ec1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ChecksMember_17d3d4c7-8157-4c8d-b56f-8b168e79fb18" xlink:href="dlx-20231231.xsd#dlx_ChecksMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_de666d15-3a0f-43a9-9c8d-47cb1237c249" xlink:to="loc_dlx_ChecksMember_17d3d4c7-8157-4c8d-b56f-8b168e79fb18" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_efef790d-01a4-4067-b460-d609029d3639" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportableSegments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_NumberOfReportableSegments_efef790d-01a4-4067-b460-d609029d3639" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Numberofcustomers_62959f86-772a-436b-8058-bbfdd08c5763" xlink:href="dlx-20231231.xsd#dlx_Numberofcustomers"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_dlx_Numberofcustomers_62959f86-772a-436b-8058-bbfdd08c5763" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_8e194b10-323f-479c-aafc-6ae94ad780a2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskPercentage1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_8e194b10-323f-479c-aafc-6ae94ad780a2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_f1f883f2-e762-4b67-a577-3c152c8a325d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_Revenues_f1f883f2-e762-4b67-a577-3c152c8a325d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_AdjustedEBITDA_0fa5c924-013f-4d2a-8f8a-ebbb11c011ee" xlink:href="dlx-20231231.xsd#dlx_AdjustedEBITDA"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_dlx_AdjustedEBITDA_0fa5c924-013f-4d2a-8f8a-ebbb11c011ee" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_bef9da87-61b6-4aca-81ca-62c1127af6e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_bef9da87-61b6-4aca-81ca-62c1127af6e8" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_e19b7f26-7cdf-4b08-a700-7c015b89af32" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_InterestExpense_e19b7f26-7cdf-4b08-a700-7c015b89af32" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_50a33210-dd2a-4c7a-8c41-0e720a7a7091" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_50a33210-dd2a-4c7a-8c41-0e720a7a7091" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_5423d529-cb3f-4868-ad51-9e543d6d2e2c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_RestructuringCharges_5423d529-cb3f-4868-ad51-9e543d6d2e2c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_6791435c-4799-4a7b-acca-5263bf26dc55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_ShareBasedCompensation_6791435c-4799-4a7b-acca-5263bf26dc55" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_3945a0ff-3e33-4ca8-93e1-70d3cf67e530" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_3945a0ff-3e33-4ca8-93e1-70d3cf67e530" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualProvision_e21169a8-dac1-4f21-a83c-4b60ee800df8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualProvision"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_LossContingencyAccrualProvision_e21169a8-dac1-4f21-a83c-4b60ee800df8" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_18716779-82e5-4a13-b428-7210d92c3bc4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_18716779-82e5-4a13-b428-7210d92c3bc4" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_0121ec15-9ddf-4c6a-8675-356395f26a0a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_0121ec15-9ddf-4c6a-8675-356395f26a0a" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_686631ba-d05d-4aa0-a29f-f4852fbef6df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_79ef2b5f-e015-4a7d-80f2-99b001aeb26b" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_686631ba-d05d-4aa0-a29f-f4852fbef6df" xlink:type="arc" order="14"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.deluxe.com/role/BUSINESSSEGMENTINFORMATIONdisaggregatedrevenueinformationDetails" xlink:type="simple" xlink:href="dlx-20231231.xsd#BUSINESSSEGMENTINFORMATIONdisaggregatedrevenueinformationDetails"/>
<link:definitionLink xlink:role="http://www.deluxe.com/role/BUSINESSSEGMENTINFORMATIONdisaggregatedrevenueinformationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductInformationLineItems_cac5a881-7148-4fea-a124-b8440b645e1a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfProductInformationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductInformationLineItems_cac5a881-7148-4fea-a124-b8440b645e1a" xlink:to="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_8634305c-f1c3-40e1-91e0-1b24e4e163dd" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:to="loc_srt_ProductOrServiceAxis_8634305c-f1c3-40e1-91e0-1b24e4e163dd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8634305c-f1c3-40e1-91e0-1b24e4e163dd_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_8634305c-f1c3-40e1-91e0-1b24e4e163dd" xlink:to="loc_srt_ProductsAndServicesDomain_8634305c-f1c3-40e1-91e0-1b24e4e163dd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_8634305c-f1c3-40e1-91e0-1b24e4e163dd" xlink:to="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_Checks1Member_5d08b2d0-845e-4813-a7d0-78e73e31438e" xlink:href="dlx-20231231.xsd#dlx_Checks1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_Checks1Member_5d08b2d0-845e-4813-a7d0-78e73e31438e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_MerchantServicesAndOtherPaymentSolutionsMember_d79ff6eb-0a70-4298-98cf-c6fc05edeb54" xlink:href="dlx-20231231.xsd#dlx_MerchantServicesAndOtherPaymentSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_MerchantServicesAndOtherPaymentSolutionsMember_d79ff6eb-0a70-4298-98cf-c6fc05edeb54" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_MarketingAndPromotionalSolutionsMember_c7987b92-0905-4f74-a133-72380d923c8d" xlink:href="dlx-20231231.xsd#dlx_MarketingAndPromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_MarketingAndPromotionalSolutionsMember_c7987b92-0905-4f74-a133-72380d923c8d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_FormsAndOtherProductsMember_910d5627-cbdf-48ce-b25b-c649800c034b" xlink:href="dlx-20231231.xsd#dlx_FormsAndOtherProductsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_FormsAndOtherProductsMember_910d5627-cbdf-48ce-b25b-c649800c034b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_TreasurymanagementsolutionsMember_c79a79b9-6bc7-4355-ad81-6f0b0aac713e" xlink:href="dlx-20231231.xsd#dlx_TreasurymanagementsolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_TreasurymanagementsolutionsMember_c79a79b9-6bc7-4355-ad81-6f0b0aac713e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DatadrivenmarketingsolutionsMember_796a5ae4-ee6f-4e1b-8329-31d7ad7f46e4" xlink:href="dlx-20231231.xsd#dlx_DatadrivenmarketingsolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_DatadrivenmarketingsolutionsMember_796a5ae4-ee6f-4e1b-8329-31d7ad7f46e4" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_WebAndHostedSolutionsMember_c7b949d9-ce11-4f80-910a-a694970f2a6e" xlink:href="dlx-20231231.xsd#dlx_WebAndHostedSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4674b375-52a3-4130-b124-032740bb2c3a" xlink:to="loc_dlx_WebAndHostedSolutionsMember_c7b949d9-ce11-4f80-910a-a694970f2a6e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_303efa1d-2339-45e5-9243-537456f69301" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:to="loc_srt_ConsolidationItemsAxis_303efa1d-2339-45e5-9243-537456f69301" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_303efa1d-2339-45e5-9243-537456f69301_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_303efa1d-2339-45e5-9243-537456f69301" xlink:to="loc_srt_ConsolidationItemsDomain_303efa1d-2339-45e5-9243-537456f69301_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_37775c47-9d2d-42ec-9ff4-79b0a6cf61fb" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_303efa1d-2339-45e5-9243-537456f69301" xlink:to="loc_srt_ConsolidationItemsDomain_37775c47-9d2d-42ec-9ff4-79b0a6cf61fb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_dd987529-f769-4476-a795-eb05173e9079" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_37775c47-9d2d-42ec-9ff4-79b0a6cf61fb" xlink:to="loc_us-gaap_OperatingSegmentsMember_dd987529-f769-4476-a795-eb05173e9079" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_ef479377-9abe-440f-b2b0-d267681ad8d3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_ef479377-9abe-440f-b2b0-d267681ad8d3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_ef479377-9abe-440f-b2b0-d267681ad8d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ef479377-9abe-440f-b2b0-d267681ad8d3" xlink:to="loc_us-gaap_SegmentDomain_ef479377-9abe-440f-b2b0-d267681ad8d3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ef479377-9abe-440f-b2b0-d267681ad8d3" xlink:to="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PaymentsMember_1c125fef-b9db-4757-bfae-0e34f668e286" xlink:href="dlx-20231231.xsd#dlx_PaymentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:to="loc_dlx_PaymentsMember_1c125fef-b9db-4757-bfae-0e34f668e286" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_DataSolutionsMember_40a1c0d9-108e-40f1-a2ec-44c8887aa658" xlink:href="dlx-20231231.xsd#dlx_DataSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:to="loc_dlx_DataSolutionsMember_40a1c0d9-108e-40f1-a2ec-44c8887aa658" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_PromotionalSolutionsMember_714ea33e-4922-460a-a2da-6c4463a80038" xlink:href="dlx-20231231.xsd#dlx_PromotionalSolutionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:to="loc_dlx_PromotionalSolutionsMember_714ea33e-4922-460a-a2da-6c4463a80038" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dlx_ChecksMember_5cdbf9b9-e068-4b4c-a859-f9a8747649d1" xlink:href="dlx-20231231.xsd#dlx_ChecksMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_dc43733e-f51b-420a-a9ac-1b6ae8d1944f" xlink:to="loc_dlx_ChecksMember_5cdbf9b9-e068-4b4c-a859-f9a8747649d1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_4e3dae6a-598d-46b7-b057-351b09c1f479" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_62958d0c-df18-43ff-a5ee-ad2b6c8f35cb" xlink:to="loc_srt_StatementGeographicalAxis_4e3dae6a-598d-46b7-b057-351b09c1f479" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_4e3dae6a-598d-46b7-b057-351b09c1f479_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_4e3dae6a-598d-46b7-b057-351b09c1f479" xlink:to="loc_srt_SegmentGeographicalDomain_4e3dae6a-598d-46b7-b057-351b09c1f479_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_40b9456f-f255-45be-ac7e-9e1dc594f7c5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_4e3dae6a-598d-46b7-b057-351b09c1f479" xlink:to="loc_srt_SegmentGeographicalDomain_40b9456f-f255-45be-ac7e-9e1dc594f7c5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_US_5ad5ddd5-6d78-4138-b4fc-7515d0a49715" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_40b9456f-f255-45be-ac7e-9e1dc594f7c5" xlink:to="loc_country_US_5ad5ddd5-6d78-4138-b4fc-7515d0a49715" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_602d6666-3584-482c-84d1-99b123f0217a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonUsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_40b9456f-f255-45be-ac7e-9e1dc594f7c5" xlink:to="loc_us-gaap_NonUsMember_602d6666-3584-482c-84d1-99b123f0217a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_b4a4f218-fcd0-4c48-9c99-4bd83df680c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_cac5a881-7148-4fea-a124-b8440b645e1a" xlink:to="loc_us-gaap_Revenues_b4a4f218-fcd0-4c48-9c99-4bd83df680c8" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-roles-2023.xsd#eedm"/>
<link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldForClients" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FundsHeldForClients"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract" xlink:to="loc_us-gaap_FundsHeldForClients" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_OtherAssetsNoncurrent" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_Assets" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:type="arc" order="1"/>
</link:definitionLink>
</link:linkbase>


25 Previous Filings that this Filing References

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

 8/04/23  Deluxe Corp.                      10-Q        6/30/23   72:9M
 5/09/23  Deluxe Corp.                      10-Q        3/31/23   73:9.7M
 3/13/23  Deluxe Corp.                      DEF 14A               12:50M
 2/24/23  Deluxe Corp.                      10-K       12/31/22  107:19M
 2/21/23  Deluxe Corp.                      8-K:5,9     2/16/23   11:252K
11/04/22  Deluxe Corp.                      10-Q        9/30/22   71:10M
 8/05/22  Deluxe Corp.                      S-8         8/05/22    9:286K                                   Toppan Merrill/FA
 3/14/22  Deluxe Corp.                      DEF 14A    12/31/21    1:25M
 8/06/21  Deluxe Corp.                      8-K:5,9     8/06/21   11:177K
 6/01/21  Deluxe Corp.                      8-K:1,2,7,9 6/01/21   14:2.6M                                   Toppan Merrill/FA
 5/07/21  Deluxe Corp.                      10-Q        3/31/21   77:8.8M
 4/22/21  Deluxe Corp.                      8-K:1,7,9   4/21/21   13:2.8M                                   Toppan Merrill/FA
 2/19/21  Deluxe Corp.                      10-K       12/31/20  116:20M
 3/26/20  Deluxe Corp.                      8-K:5,9     3/25/20   11:194K                                   Toppan Merrill/FA
 3/20/20  Deluxe Corp.                      DEF 14A    12/31/19    1:2.9M
 2/21/20  Deluxe Corp.                      10-K       12/31/19  109:21M
10/25/19  Deluxe Corp.                      10-Q        9/30/19   79:13M
 5/03/19  Deluxe Corp.                      10-Q        3/31/19   84:10M
11/06/18  Deluxe Corp.                      8-K:5,9    11/06/18    3:451K                                   Broadridge Fin’l So… Inc
 2/23/18  Deluxe Corp.                      10-K       12/31/17  113:21M
 3/17/17  Deluxe Corp.                      DEF 14A     5/02/17    2:4M                                     Broadridge Fin’l So… Inc
11/02/10  Deluxe Corp.                      10-Q        9/30/10   35:5.6M                                   Broadridge Fin’l So… Inc
 2/20/09  Deluxe Corp.                      10-K       12/31/08   12:1.3M                                   Bowne Boc/FA
 1/07/02  Deluxe Corp.                      S-8 POS     1/07/02    4:106K                                   American Fin’l P… Inc/FA
 7/28/00  Deluxe Corp.                      10-Q        6/30/00    8:161K                                   American Fin’l P… Inc/FA
Top
Filing Submission 0000027996-24-000065   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., May 10, 8:34:38.3am ET