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

Automatic Data Processing Inc – ‘10-Q’ for 3/31/20 – ‘EX-101.DEF’

On:  Friday, 5/1/20, at 3:49pm ET   ·   For:  3/31/20   ·   Accession #:  8670-20-20   ·   File #:  1-05397

Previous ‘10-Q’:  ‘10-Q’ on 1/31/20 for 12/31/19   ·   Next:  ‘10-Q’ on 10/30/20 for 9/30/20   ·   Latest:  ‘10-Q’ on 2/1/24 for 12/31/23

Find Words in Filings emoji
 
  in    Show  and   Hints

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

 5/01/20  Automatic Data Processing Inc     10-Q        3/31/20   86:14M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.28M 
11: 10-Q        Quarterly Report -- q3fy2010q                        PDF   1.34M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     30K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     29K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     26K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     26K 
63: R1          Cover page                                          HTML     77K 
15: R2          Statements of Consolidated Earnings                 HTML     84K 
45: R3          Statements of Consolidated Earnings                 HTML     25K 
                (Parenthetical)                                                  
70: R4          Statements of Consolidated Comprehensive Income     HTML     69K 
61: R5          Consolidated Balance Sheets                         HTML    160K 
13: R6          Consolidated Balance Sheets (Parenthetical)         HTML     53K 
43: R7          Statements of Consolidated Cash Flows               HTML    124K 
73: R8          Basis of Presentation                               HTML     83K 
59: R9          New Accounting Pronouncements                       HTML     38K 
57: R10         Revenue                                             HTML    159K 
86: R11         Earnings per Share (Eps)                            HTML     74K 
36: R12         Other Income, Net                                   HTML     58K 
28: R13         Corporate Investments and Funds Held For Clients    HTML    261K 
56: R14         Leases                                              HTML     57K 
85: R15         Goodwill and Intangible Assets, net                 HTML     72K 
35: R16         Short-term Financing                                HTML     57K 
27: R17         Long-term Debt                                      HTML     47K 
58: R18         Employee Benefit Plans                              HTML     79K 
84: R19         Income Taxes                                        HTML     27K 
44: R20         Commitments and Contingencies                       HTML     28K 
14: R21         Stockholders' Equity                                HTML    210K 
64: R22         Reclassifications out of Accumulated Other          HTML    143K 
                Comprehensive Income (Aoci)                                      
72: R23         Interim Financial Data by Segment                   HTML     68K 
42: R24         Subsequent Events                                   HTML     27K 
12: R25         Basis of Presentation (Tables)                      HTML     76K 
62: R26         New Accounting Pronouncements (Tables)              HTML     39K 
71: R27         Revenue (Tables)                                    HTML    156K 
41: R28         Earnings per Share (Eps) (Tables)                   HTML     74K 
16: R29         Other Income, Net (Tables)                          HTML     57K 
30: R30         Corporate Investments and Funds Held For Clients    HTML    257K 
                (Tables)                                                         
37: R31         Leases (Tables)                                     HTML     57K 
82: R32         Goodwill and Intangibles Assets, net (Tables)       HTML     76K 
54: R33         Short-term Financing (Tables)                       HTML     52K 
31: R34         Long-term Debt (Tables)                             HTML     43K 
39: R35         Employee Benefit Plans (Tables)                     HTML     76K 
83: R36         Stockholders' Equity (Tables)                       HTML    211K 
55: R37         Reclassifications out of Accumulated Other          HTML    142K 
                Comprehensive Income (Aoci) (Tables)                             
29: R38         Interim Financial Data by Segment (Tables)          HTML     68K 
40: R39         Basis of Presentation (Details)                     HTML     56K 
18: R40         New Accounting Pronouncements (Details)             HTML     28K 
46: R41         Revenue - Disaggregation of Revenue (Details)       HTML     64K 
77: R42         Revenue - Contract Liability (Details)              HTML     33K 
68: R43         Earnings per Share (Eps) (Details)                  HTML     55K 
19: R44         Other Income, Net (Details)                         HTML     44K 
47: R45         Other Income, Net - Narrative (Details)             HTML     28K 
78: R46         Corporate Investments and Funds Held For Clients    HTML     84K 
                (Corporate Investments And Funds Held For Clients)               
                (Details)                                                        
69: R47         Corporate Investments and Funds Held For Clients    HTML     89K 
                (Available-For-Sale Securities That Have Been In                 
                An Unrealized Loss Position) (Details)                           
17: R48         Corporate Investments and Funds Held For Clients    HTML     71K 
                (Narrative) (Details)                                            
48: R49         Corporate Investments and Funds Held For Clients    HTML     35K 
                (Classification Of Corporate Investments On The                  
                Consolidated Balance Sheets) (Details)                           
34: R50         Corporate Investments and Funds Held For Clients    HTML     41K 
                (Schedule Of Investment Of Funds Held For Clients)               
                (Details)                                                        
23: R51         Corporate Investments and Funds Held For Clients    HTML     38K 
                (Expected Maturities Of Available-For-Sale                       
                Securities) (Details)                                            
53: R52         Leases - Narrative (Details)                        HTML     32K 
81: R53         Leases - Lease Cost (Details)                       HTML     33K 
33: R54         Leases - Right of Use Assets and Operating Lease    HTML     33K 
                Liabilities (Details)                                            
22: R55         Leases - Operating Lease Maturities (Details)       HTML     42K 
52: R56         Goodwill and Intangibles Assets, net - Changes In   HTML     37K 
                Goodwill (Details)                                               
80: R57         Goodwill and Intangibles Assets, net - Components   HTML     39K 
                Of Finite-Lived Intangible Assets (Details)                      
32: R58         Goodwill and Intangibles Assets, net - Narrative    HTML     36K 
                (Details)                                                        
25: R59         Goodwill and Intangibles Assets, net - Schedule Of  HTML     37K 
                Finite-Lived Intangible Assets, Future                           
                Amortization Expense (Details)                                   
66: R60         Short-term Financing (Details)                      HTML     67K 
76: R61         Long-term Debt (Details)                            HTML     56K 
50: R62         Employee Benefit Plans (Narrative) (Details)        HTML     38K 
21: R63         Employee Benefit Plans (Components Of Stock-Based   HTML     34K 
                Compensation Expense) (Details)                                  
65: R64         Employee Benefit Plans (Components Of Net Pension   HTML     42K 
                Expense) (Details)                                               
75: R65         Income Taxes (Details)                              HTML     27K 
49: R66         Stockholders' Equity (Details)                      HTML     76K 
20: R67         Reclassifications out of Accumulated Other          HTML     60K 
                Comprehensive Income (Aoci) (Details)                            
67: R68         Interim Financial Data by Segment (Narrative)       HTML     24K 
                (Details)                                                        
74: R69         Interim Financial Data by Segment (Financial Data   HTML     39K 
                By Strategic Business Unit Segment) (Details)                    
79: R70         Subsequent Events (Details)                         HTML     34K 
26: XML         IDEA XML File -- Filing Summary                      XML    160K 
60: XML         XBRL Instance -- adp-20200331_htm                    XML   3.85M 
51: EXCEL       IDEA Workbook of Financial Reports                  XLSX     85K 
 7: EX-101.CAL  XBRL Calculations -- adp-20200331_cal                XML    263K 
 8: EX-101.DEF  XBRL Definitions -- adp-20200331_def                 XML    395K 
 9: EX-101.LAB  XBRL Labels -- adp-20200331_lab                      XML   1.41M 
10: EX-101.PRE  XBRL Presentations -- adp-20200331_pre               XML    802K 
 6: EX-101.SCH  XBRL Schema -- adp-20200331                          XSD    172K 
24: JSON        XBRL Instance as JSON Data -- MetaLinks              328±   481K 
38: ZIP         XBRL Zipped Folder -- 0000008670-20-000020-xbrl      Zip    624K 


‘EX-101.DEF’   —   XBRL Definitions — adp-20200331_def


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2020 Workiva -->
<!-- r:d2e987ea-8b75-49e1-9875-40b212828c2a,g:11038775-98da-4f6a-b601-37db33d8ea34 -->
<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.adp.com/role/Coverpage" xlink:type="simple" xlink:href="adp-20200331.xsd#Coverpage"/>
<link:definitionLink xlink:role="http://www.adp.com/role/Coverpage" xlink:type="extended" id="i5b6c119c2b6148f496987d15cf78747d_Coverpage"/>
<link:roleRef roleURI="http://www.adp.com/role/StatementsofConsolidatedEarnings" xlink:type="simple" xlink:href="adp-20200331.xsd#StatementsofConsolidatedEarnings"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StatementsofConsolidatedEarnings" xlink:type="extended" id="i8c63c0d6315b4095988e233016c4e56f_StatementsofConsolidatedEarnings"/>
<link:roleRef roleURI="http://www.adp.com/role/StatementsofConsolidatedEarningsParenthetical" xlink:type="simple" xlink:href="adp-20200331.xsd#StatementsofConsolidatedEarningsParenthetical"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StatementsofConsolidatedEarningsParenthetical" xlink:type="extended" id="ib343f63df57649fe84b3fa9a89930849_StatementsofConsolidatedEarningsParenthetical"/>
<link:roleRef roleURI="http://www.adp.com/role/StatementsofConsolidatedComprehensiveIncome" xlink:type="simple" xlink:href="adp-20200331.xsd#StatementsofConsolidatedComprehensiveIncome"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StatementsofConsolidatedComprehensiveIncome" xlink:type="extended" id="i5c76374fca7149a082eabcf808f2be7b_StatementsofConsolidatedComprehensiveIncome"/>
<link:roleRef roleURI="http://www.adp.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="adp-20200331.xsd#ConsolidatedBalanceSheets"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ConsolidatedBalanceSheets" xlink:type="extended" id="ib565d88083d0486bb139932c2cd86d33_ConsolidatedBalanceSheets"/>
<link:roleRef roleURI="http://www.adp.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="adp-20200331.xsd#ConsolidatedBalanceSheetsParenthetical"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" id="i269533e666864ad4a11eb2a8e503eccb_ConsolidatedBalanceSheetsParenthetical"/>
<link:roleRef roleURI="http://www.adp.com/role/StatementsofConsolidatedCashFlows" xlink:type="simple" xlink:href="adp-20200331.xsd#StatementsofConsolidatedCashFlows"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StatementsofConsolidatedCashFlows" xlink:type="extended" id="i18edf4dad8b44dec903bf705fde8c811_StatementsofConsolidatedCashFlows"/>
<link:roleRef roleURI="http://www.adp.com/role/BasisofPresentation" xlink:type="simple" xlink:href="adp-20200331.xsd#BasisofPresentation"/>
<link:definitionLink xlink:role="http://www.adp.com/role/BasisofPresentation" xlink:type="extended" id="i8fc1f239969245ab9ce751c8d2e89033_BasisofPresentation"/>
<link:roleRef roleURI="http://www.adp.com/role/BasisofPresentationTables" xlink:type="simple" xlink:href="adp-20200331.xsd#BasisofPresentationTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/BasisofPresentationTables" xlink:type="extended" id="ib5d4c38ade3e4e83b690a85fd38e5dee_BasisofPresentationTables"/>
<link:roleRef roleURI="http://www.adp.com/role/BasisofPresentationDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#BasisofPresentationDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/BasisofPresentationDetails" xlink:type="extended" id="i3e8e957924c64a989e070efd8fb22f4f_BasisofPresentationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_PEORevenues_1cbe5e7e-5967-42bf-b06f-60b8484f91b6" xlink:href="adp-20200331.xsd#adp_PEORevenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_adp_PEORevenues_1cbe5e7e-5967-42bf-b06f-60b8484f91b6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_49da9113-617d-4e1a-8916-70f0cf9a3f01" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_Revenues_49da9113-617d-4e1a-8916-70f0cf9a3f01" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_e79cac1b-23b6-42e6-8825-efa9827b8b38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingCostsAndExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_e79cac1b-23b6-42e6-8825-efa9827b8b38" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_2501a8ee-0f67-4a9d-8966-af9159398653" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_CostsAndExpenses_2501a8ee-0f67-4a9d-8966-af9159398653" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ef3fb27-819f-45d9-9059-020e0727ed91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5ef3fb27-819f-45d9-9059-020e0727ed91" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_26f983c3-bc74-4e9a-8ef3-35ce8ba37019" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_26f983c3-bc74-4e9a-8ef3-35ce8ba37019" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_6af62263-775b-4993-aa23-bb69636fd2d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_NetIncomeLoss_6af62263-775b-4993-aa23-bb69636fd2d5" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_94d21fca-77ea-4ddb-b1e3-961f89ff7425" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_25d2f8a3-65ff-491a-a3f9-7c5eafc99c4d" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_94d21fca-77ea-4ddb-b1e3-961f89ff7425" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_5338dec3-cb6e-4871-aa59-b2b1158668fc" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_94d21fca-77ea-4ddb-b1e3-961f89ff7425" xlink:to="loc_srt_RestatementAxis_5338dec3-cb6e-4871-aa59-b2b1158668fc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_5338dec3-cb6e-4871-aa59-b2b1158668fc_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_5338dec3-cb6e-4871-aa59-b2b1158668fc" xlink:to="loc_srt_RestatementDomain_5338dec3-cb6e-4871-aa59-b2b1158668fc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_2c1d5d90-6a01-4121-90b7-1de9a0201566" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_5338dec3-cb6e-4871-aa59-b2b1158668fc" xlink:to="loc_srt_RestatementDomain_2c1d5d90-6a01-4121-90b7-1de9a0201566" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_15fa1a97-f33d-4550-bab7-de22d034b890" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_2c1d5d90-6a01-4121-90b7-1de9a0201566" xlink:to="loc_srt_RestatementAdjustmentMember_15fa1a97-f33d-4550-bab7-de22d034b890" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_b91b8eba-5096-408b-a089-07e284810414" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioPreviouslyReportedMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_2c1d5d90-6a01-4121-90b7-1de9a0201566" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_b91b8eba-5096-408b-a089-07e284810414" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/NewAccountingPronouncements" xlink:type="simple" xlink:href="adp-20200331.xsd#NewAccountingPronouncements"/>
<link:definitionLink xlink:role="http://www.adp.com/role/NewAccountingPronouncements" xlink:type="extended" id="ia06f994dbe9e4c0a8e1c1338a3d0456d_NewAccountingPronouncements"/>
<link:roleRef roleURI="http://www.adp.com/role/NewAccountingPronouncementsTables" xlink:type="simple" xlink:href="adp-20200331.xsd#NewAccountingPronouncementsTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/NewAccountingPronouncementsTables" xlink:type="extended" id="i554a4edb1cfb469a8fffce6fa8526d57_NewAccountingPronouncementsTables"/>
<link:roleRef roleURI="http://www.adp.com/role/NewAccountingPronouncementsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#NewAccountingPronouncementsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/NewAccountingPronouncementsDetails" xlink:type="extended" id="i4835ce636d224e9f9debbfb5f1cb66c9_NewAccountingPronouncementsDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/Revenue" xlink:type="simple" xlink:href="adp-20200331.xsd#Revenue"/>
<link:definitionLink xlink:role="http://www.adp.com/role/Revenue" xlink:type="extended" id="id986a2142611437a9099fcc6c0840808_Revenue"/>
<link:roleRef roleURI="http://www.adp.com/role/RevenueTables" xlink:type="simple" xlink:href="adp-20200331.xsd#RevenueTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/RevenueTables" xlink:type="extended" id="i8f85a9f22b904fefb2845e29929ef926_RevenueTables"/>
<link:roleRef roleURI="http://www.adp.com/role/RevenueDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#RevenueDisaggregationofRevenueDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/RevenueDisaggregationofRevenueDetails" xlink:type="extended" id="id1e77ec548114924ac66dc1b8966ae0f_RevenueDisaggregationofRevenueDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_2a0cdeff-15d4-432e-8f56-b61344b438ed" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0a02ae13-26a2-48b1-b744-86f37889484e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2a0cdeff-15d4-432e-8f56-b61344b438ed" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0a02ae13-26a2-48b1-b744-86f37889484e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_a3a596c1-1164-4dfb-8754-47e4b01a40e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2a0cdeff-15d4-432e-8f56-b61344b438ed" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_a3a596c1-1164-4dfb-8754-47e4b01a40e5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_ca18dddb-dd01-4980-af9a-5af1183123a6" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_a3a596c1-1164-4dfb-8754-47e4b01a40e5" xlink:to="loc_srt_ProductOrServiceAxis_ca18dddb-dd01-4980-af9a-5af1183123a6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_ca18dddb-dd01-4980-af9a-5af1183123a6_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_ca18dddb-dd01-4980-af9a-5af1183123a6" xlink:to="loc_srt_ProductsAndServicesDomain_ca18dddb-dd01-4980-af9a-5af1183123a6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_ca18dddb-dd01-4980-af9a-5af1183123a6" xlink:to="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_HCMMember_f93fc9f6-dff1-4c09-bd11-6d55bef20dec" xlink:href="adp-20200331.xsd#adp_HCMMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:to="loc_adp_HCMMember_f93fc9f6-dff1-4c09-bd11-6d55bef20dec" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_HROMember_bf434f37-2491-41ca-950c-aa97d7f47abe" xlink:href="adp-20200331.xsd#adp_HROMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:to="loc_adp_HROMember_bf434f37-2491-41ca-950c-aa97d7f47abe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_PEOMember_2fa192a1-9c4d-4236-b128-f12edebc330f" xlink:href="adp-20200331.xsd#adp_PEOMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:to="loc_adp_PEOMember_2fa192a1-9c4d-4236-b128-f12edebc330f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_GlobalMember_66adc58e-b07c-4aa7-9337-20d6f5634016" xlink:href="adp-20200331.xsd#adp_GlobalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:to="loc_adp_GlobalMember_66adc58e-b07c-4aa7-9337-20d6f5634016" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ClientfundinterestMember_dfe95c88-16c2-4772-a0ce-387a4e40ec26" xlink:href="adp-20200331.xsd#adp_ClientfundinterestMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f4092eca-e316-4c46-a421-14ff448f6670" xlink:to="loc_adp_ClientfundinterestMember_dfe95c88-16c2-4772-a0ce-387a4e40ec26" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_88d53f13-1a41-4441-8ed8-d6f316793403" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_a3a596c1-1164-4dfb-8754-47e4b01a40e5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_88d53f13-1a41-4441-8ed8-d6f316793403" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_88d53f13-1a41-4441-8ed8-d6f316793403_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_88d53f13-1a41-4441-8ed8-d6f316793403" xlink:to="loc_us-gaap_SegmentDomain_88d53f13-1a41-4441-8ed8-d6f316793403_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f72b3985-3996-4670-a87d-89166266e2e7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_88d53f13-1a41-4441-8ed8-d6f316793403" xlink:to="loc_us-gaap_SegmentDomain_f72b3985-3996-4670-a87d-89166266e2e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_EmployerServicesSegmentMember_68027819-1e7e-496a-aaa6-428540f27792" xlink:href="adp-20200331.xsd#adp_EmployerServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f72b3985-3996-4670-a87d-89166266e2e7" xlink:to="loc_adp_EmployerServicesSegmentMember_68027819-1e7e-496a-aaa6-428540f27792" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ProfessionalEmployeeOrganizationServicesSegmentMember_fbf81fe4-2c85-44df-9b9f-64fad5f0ec4f" xlink:href="adp-20200331.xsd#adp_ProfessionalEmployeeOrganizationServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f72b3985-3996-4670-a87d-89166266e2e7" xlink:to="loc_adp_ProfessionalEmployeeOrganizationServicesSegmentMember_fbf81fe4-2c85-44df-9b9f-64fad5f0ec4f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_add03c00-0f4d-43b4-98ab-91a48cb338aa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllOtherSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f72b3985-3996-4670-a87d-89166266e2e7" xlink:to="loc_us-gaap_AllOtherSegmentsMember_add03c00-0f4d-43b4-98ab-91a48cb338aa" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/RevenueContractLiabilityDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#RevenueContractLiabilityDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/RevenueContractLiabilityDetails" xlink:type="extended" id="ibe9037019c7342799dd93408a156c6db_RevenueContractLiabilityDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/EarningsperShareEPS" xlink:type="simple" xlink:href="adp-20200331.xsd#EarningsperShareEPS"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EarningsperShareEPS" xlink:type="extended" id="i9c91bba1c1524003a5e528ff8094e917_EarningsperShareEPS"/>
<link:roleRef roleURI="http://www.adp.com/role/EarningsperShareEPSTables" xlink:type="simple" xlink:href="adp-20200331.xsd#EarningsperShareEPSTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EarningsperShareEPSTables" xlink:type="extended" id="i600e0db7b4504e229ff4571fd64fde13_EarningsperShareEPSTables"/>
<link:roleRef roleURI="http://www.adp.com/role/EarningsperShareEPSDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#EarningsperShareEPSDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EarningsperShareEPSDetails" xlink:type="extended" id="i0751de4d546744edbc8bfabec6e0743e_EarningsperShareEPSDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/OtherIncomeNet" xlink:type="simple" xlink:href="adp-20200331.xsd#OtherIncomeNet"/>
<link:definitionLink xlink:role="http://www.adp.com/role/OtherIncomeNet" xlink:type="extended" id="if4ba30b052cc4db796e434b56e1a9b44_OtherIncomeNet"/>
<link:roleRef roleURI="http://www.adp.com/role/OtherIncomeNetTables" xlink:type="simple" xlink:href="adp-20200331.xsd#OtherIncomeNetTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/OtherIncomeNetTables" xlink:type="extended" id="i967a07bc14284d8092d46fc79346ce1c_OtherIncomeNetTables"/>
<link:roleRef roleURI="http://www.adp.com/role/OtherIncomeNetDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#OtherIncomeNetDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/OtherIncomeNetDetails" xlink:type="extended" id="i7c10b86930144240ad521a311948a7ac_OtherIncomeNetDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/OtherIncomeNetNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#OtherIncomeNetNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/OtherIncomeNetNarrativeDetails" xlink:type="extended" id="if05e13b9fdb243e18f355a8e5012be13_OtherIncomeNetNarrativeDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClients" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClients"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClients" xlink:type="extended" id="i1588345c33874212a06521573730ee09_CorporateInvestmentsandFundsHeldForClients"/>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsTables" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsTables" xlink:type="extended" id="ic9bf55afdb7146928ec04457f01ee40c_CorporateInvestmentsandFundsHeldForClientsTables"/>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsCorporateInvestmentsAndFundsHeldForClientsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsCorporateInvestmentsAndFundsHeldForClientsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsCorporateInvestmentsAndFundsHeldForClientsDetails" xlink:type="extended" id="ia56db6fc92964e31bab3d919361af52e_CorporateInvestmentsandFundsHeldForClientsCorporateInvestmentsAndFundsHeldForClientsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CashEquivalentsAtAmortizedCost_01164c63-0f82-44e0-abce-07686678dd48" xlink:href="adp-20200331.xsd#adp_CashEquivalentsAtAmortizedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_CashEquivalentsAtAmortizedCost_01164c63-0f82-44e0-abce-07686678dd48" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CashEquivalentsAtGrossUnrealizedGains_05b87b67-bef6-4b8f-8ba4-08c1edec4481" xlink:href="adp-20200331.xsd#adp_CashEquivalentsAtGrossUnrealizedGains"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_CashEquivalentsAtGrossUnrealizedGains_05b87b67-bef6-4b8f-8ba4-08c1edec4481" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CashEquivalentsAtGrossUnrealizedLosses_debed0e4-3173-4cf0-88e3-1526d4cbb182" xlink:href="adp-20200331.xsd#adp_CashEquivalentsAtGrossUnrealizedLosses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_CashEquivalentsAtGrossUnrealizedLosses_debed0e4-3173-4cf0-88e3-1526d4cbb182" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashEquivalentsAtCarryingValue_77054973-cf85-4cfb-98ba-997f93c1610a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashEquivalentsAtCarryingValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_us-gaap_CashEquivalentsAtCarryingValue_77054973-cf85-4cfb-98ba-997f93c1610a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_706aebee-6dbd-4ff9-8dd3-33a127c7a283" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_706aebee-6dbd-4ff9-8dd3-33a127c7a283" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AvailableforSaleSecuritiesUnrealizedGains_94858d8a-7598-45e3-a412-de0d07a1e12f" xlink:href="adp-20200331.xsd#adp_AvailableforSaleSecuritiesUnrealizedGains"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_AvailableforSaleSecuritiesUnrealizedGains_94858d8a-7598-45e3-a412-de0d07a1e12f" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AvailableforsalesecuritiesUnrealizedLoss_c363acb6-af5a-4b56-bd0d-ab0020ee017e" xlink:href="adp-20200331.xsd#adp_AvailableforsalesecuritiesUnrealizedLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_AvailableforsalesecuritiesUnrealizedLoss_c363acb6-af5a-4b56-bd0d-ab0020ee017e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecurities_ef354fe5-a868-434d-a266-c50fd54003f9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_us-gaap_AvailableForSaleSecurities_ef354fe5-a868-434d-a266-c50fd54003f9" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsAmortizedCost_4c782587-e0c2-462f-89b8-926c6f9b4402" xlink:href="adp-20200331.xsd#adp_TotalCorporateInvestmentsAndFundsHeldForClientsAmortizedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsAmortizedCost_4c782587-e0c2-462f-89b8-926c6f9b4402" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedGains_a222b472-4dec-4517-8158-922265c2c3fd" xlink:href="adp-20200331.xsd#adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedGains"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedGains_a222b472-4dec-4517-8158-922265c2c3fd" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedLosses_4ec20594-fc07-4ee5-8745-9f24f05f3d18" xlink:href="adp-20200331.xsd#adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedLosses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsGrossUnrealizedLosses_4ec20594-fc07-4ee5-8745-9f24f05f3d18" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsFairValue_c9ff15ac-2a0f-484e-a7e0-5ebf4d4cb2cc" xlink:href="adp-20200331.xsd#adp_TotalCorporateInvestmentsAndFundsHeldForClientsFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_adp_TotalCorporateInvestmentsAndFundsHeldForClientsFairValue_c9ff15ac-2a0f-484e-a7e0-5ebf4d4cb2cc" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_df1b2b7d-30b5-462f-9650-133d29b576f5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_866cd1ce-d29a-4a71-915d-a4e727877e21" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_df1b2b7d-30b5-462f-9650-133d29b576f5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_b18cc8ec-7ff2-4f67-afd1-af909914636c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_df1b2b7d-30b5-462f-9650-133d29b576f5" xlink:to="loc_us-gaap_FinancialInstrumentAxis_b18cc8ec-7ff2-4f67-afd1-af909914636c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b18cc8ec-7ff2-4f67-afd1-af909914636c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_b18cc8ec-7ff2-4f67-afd1-af909914636c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b18cc8ec-7ff2-4f67-afd1-af909914636c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_b18cc8ec-7ff2-4f67-afd1-af909914636c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_27616a18-4bc2-4d20-8c9a-465a1adb9d9f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_27616a18-4bc2-4d20-8c9a-465a1adb9d9f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_d19846f0-57ef-4499-b3ec-ab5f90beff79" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_d19846f0-57ef-4499-b3ec-ab5f90beff79" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_c24ace21-038c-4cc3-8981-edb0b18e0a8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_c24ace21-038c-4cc3-8981-edb0b18e0a8a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_6a79753c-5590-4bf9-83bd-bf23e9078f4b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasurySecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_6a79753c-5590-4bf9-83bd-bf23e9078f4b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_1734f3b8-bbba-40b0-812d-47aca5ed5246" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_1734f3b8-bbba-40b0-812d-47aca5ed5246" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CanadianProvincialBondsMember_9327cbad-87d9-41f5-abba-a1e1bbc53e73" xlink:href="adp-20200331.xsd#adp_CanadianProvincialBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_adp_CanadianProvincialBondsMember_9327cbad-87d9-41f5-abba-a1e1bbc53e73" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_54438700-e391-416c-a923-502d4e154b71" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MunicipalBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_MunicipalBondsMember_54438700-e391-416c-a923-502d4e154b71" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_b88396ed-8b08-4982-bed5-606bfb2b7913" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_692f0d6f-ee72-4eb8-986c-01da57fb14f0" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_b88396ed-8b08-4982-bed5-606bfb2b7913" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentSecondaryCategorizationAxis_72f6291d-c810-4e82-812a-38e1531c04de" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentSecondaryCategorizationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_df1b2b7d-30b5-462f-9650-133d29b576f5" xlink:to="loc_us-gaap_InvestmentSecondaryCategorizationAxis_72f6291d-c810-4e82-812a-38e1531c04de" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_72f6291d-c810-4e82-812a-38e1531c04de_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentSecondaryCategorizationAxis_72f6291d-c810-4e82-812a-38e1531c04de" xlink:to="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_72f6291d-c810-4e82-812a-38e1531c04de_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_ce54e1bb-dc96-413b-90b4-1e72c0f9e132" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentSecondaryCategorizationAxis_72f6291d-c810-4e82-812a-38e1531c04de" xlink:to="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_ce54e1bb-dc96-413b-90b4-1e72c0f9e132" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CorporateInvestmentsMember_2432afc0-ea0e-44a9-8725-f98c8f3e831f" xlink:href="adp-20200331.xsd#adp_CorporateInvestmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_ce54e1bb-dc96-413b-90b4-1e72c0f9e132" xlink:to="loc_adp_CorporateInvestmentsMember_2432afc0-ea0e-44a9-8725-f98c8f3e831f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_FundsHeldForClientsMember_7dd57f6a-263c-48dd-b15d-672187e15e7e" xlink:href="adp-20200331.xsd#adp_FundsHeldForClientsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_ce54e1bb-dc96-413b-90b4-1e72c0f9e132" xlink:to="loc_adp_FundsHeldForClientsMember_7dd57f6a-263c-48dd-b15d-672187e15e7e" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsAvailableForSaleSecuritiesThatHaveBeenInAnUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsAvailableForSaleSecuritiesThatHaveBeenInAnUnrealizedLossPositionDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsAvailableForSaleSecuritiesThatHaveBeenInAnUnrealizedLossPositionDetails" xlink:type="extended" id="ief95158a6e5c4164bba10e8125fb7a2e_CorporateInvestmentsandFundsHeldForClientsAvailableForSaleSecuritiesThatHaveBeenInAnUnrealizedLossPositionDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_36fad452-d3d9-4077-8eeb-8a7f0b7a342f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_36fad452-d3d9-4077-8eeb-8a7f0b7a342f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_e446fc51-ebfc-42a0-8ce8-97544c6a76a5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_e446fc51-ebfc-42a0-8ce8-97544c6a76a5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_a90ed7bc-9955-4f03-9d24-af964afa8ff2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_a90ed7bc-9955-4f03-9d24-af964afa8ff2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_9ccb2d45-89de-45cd-80ad-5dc25ec98611" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_9ccb2d45-89de-45cd-80ad-5dc25ec98611" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_085e7084-ec15-4dee-9db0-9f96c346b2d8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_085e7084-ec15-4dee-9db0-9f96c346b2d8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_edcb935b-cbe6-479e-bb69-76ac12d738c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_edcb935b-cbe6-479e-bb69-76ac12d738c3" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecurities_e44dc386-7957-4ecb-88f6-3d9802cf1fd9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_AvailableForSaleSecurities_e44dc386-7957-4ecb-88f6-3d9802cf1fd9" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_8bda8ea4-ef5e-4ba8-8002-cd663d88cdce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa22f50-3d7d-44d4-9cb4-d5fe0c73dc1f" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_8bda8ea4-ef5e-4ba8-8002-cd663d88cdce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5b535694-0e59-41d5-92c8-55c37730ff17" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_8bda8ea4-ef5e-4ba8-8002-cd663d88cdce" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5b535694-0e59-41d5-92c8-55c37730ff17" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5b535694-0e59-41d5-92c8-55c37730ff17_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5b535694-0e59-41d5-92c8-55c37730ff17" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5b535694-0e59-41d5-92c8-55c37730ff17_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_172b0e2c-0415-449d-9264-052b7d5d229d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5b535694-0e59-41d5-92c8-55c37730ff17" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_172b0e2c-0415-449d-9264-052b7d5d229d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_3e78f792-9e8b-4b5f-8749-5875afaa1965" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_172b0e2c-0415-449d-9264-052b7d5d229d" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_3e78f792-9e8b-4b5f-8749-5875afaa1965" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_8601934d-ddb5-4854-818d-5d33275a1e67" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_172b0e2c-0415-449d-9264-052b7d5d229d" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_8601934d-ddb5-4854-818d-5d33275a1e67" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_9730a1ba-e33f-42f2-a49f-c0acb3e267de" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_8bda8ea4-ef5e-4ba8-8002-cd663d88cdce" xlink:to="loc_us-gaap_FinancialInstrumentAxis_9730a1ba-e33f-42f2-a49f-c0acb3e267de" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9730a1ba-e33f-42f2-a49f-c0acb3e267de_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_9730a1ba-e33f-42f2-a49f-c0acb3e267de" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9730a1ba-e33f-42f2-a49f-c0acb3e267de_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_9730a1ba-e33f-42f2-a49f-c0acb3e267de" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_d97b6a17-2537-4bd1-a783-e54ec5e89832" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_d97b6a17-2537-4bd1-a783-e54ec5e89832" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_fc080d67-2b02-4936-9df6-c3ca84cf0f3f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_fc080d67-2b02-4936-9df6-c3ca84cf0f3f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_cc4e0d77-77b4-4134-8a6e-d9c1efec8aaf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasurySecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_cc4e0d77-77b4-4134-8a6e-d9c1efec8aaf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_cdd22948-1a3d-466b-86b6-614b7cb87896" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_cdd22948-1a3d-466b-86b6-614b7cb87896" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_1a190694-a741-424f-bc2e-91c8fc30f4ab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_1a190694-a741-424f-bc2e-91c8fc30f4ab" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CanadianProvincialBondsMember_f9fd07f6-43ec-4c09-9d32-55577ec4f989" xlink:href="adp-20200331.xsd#adp_CanadianProvincialBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_adp_CanadianProvincialBondsMember_f9fd07f6-43ec-4c09-9d32-55577ec4f989" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_a0d1e1f0-a37c-46b4-95ba-4a7bd9eed4fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MunicipalBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_MunicipalBondsMember_a0d1e1f0-a37c-46b4-95ba-4a7bd9eed4fe" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_4b36b4a7-2c65-41d2-8d38-0eeed1c1a30b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d089f650-932f-481b-b73e-bf6c6feca147" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_4b36b4a7-2c65-41d2-8d38-0eeed1c1a30b" xlink:type="arc" order="7"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsNarrativeDetails" xlink:type="extended" id="i08ecb5ee9dea4ce4930527a206d2c323_CorporateInvestmentsandFundsHeldForClientsNarrativeDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_EarliestCorporatebonddebtmaturitydate_e8be170b-7b93-465e-ac37-e97944232838" xlink:href="adp-20200331.xsd#adp_EarliestCorporatebonddebtmaturitydate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_EarliestCorporatebonddebtmaturitydate_e8be170b-7b93-465e-ac37-e97944232838" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_LatestCorporateDebtMaturityDate_4c45c53d-e70a-47d4-ace9-9349836a323a" xlink:href="adp-20200331.xsd#adp_LatestCorporateDebtMaturityDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_LatestCorporateDebtMaturityDate_4c45c53d-e70a-47d4-ace9-9349836a323a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecurities_08db212f-2cb8-4b10-b93f-c0ac731fed26" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_us-gaap_AvailableForSaleSecurities_08db212f-2cb8-4b10-b93f-c0ac731fed26" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_EarliestU.S.Treasurymaturitydate_9e8ebef6-ce24-4202-b940-fca1ee19426c" xlink:href="adp-20200331.xsd#adp_EarliestU.S.Treasurymaturitydate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_EarliestU.S.Treasurymaturitydate_9e8ebef6-ce24-4202-b940-fca1ee19426c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_LatestU.STreasurymaturitydate_46f1708c-dccd-40d7-a8be-8569e855c5c2" xlink:href="adp-20200331.xsd#adp_LatestU.STreasurymaturitydate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_LatestU.STreasurymaturitydate_46f1708c-dccd-40d7-a8be-8569e855c5c2" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ClientFundObligationRepaymentPeriod_99c60653-38eb-4c9b-9577-941c5c06e236" xlink:href="adp-20200331.xsd#adp_ClientFundObligationRepaymentPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_ClientFundObligationRepaymentPeriod_99c60653-38eb-4c9b-9577-941c5c06e236" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ClientFundsObligations_f70dafc1-604c-45ea-9ae0-c521ceae1f38" xlink:href="adp-20200331.xsd#adp_ClientFundsObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_ClientFundsObligations_f70dafc1-604c-45ea-9ae0-c521ceae1f38" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ClientFundsHeldinGrantorTrust_86f594f7-fdec-48be-8152-e632668f119a" xlink:href="adp-20200331.xsd#adp_ClientFundsHeldinGrantorTrust"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_ClientFundsHeldinGrantorTrust_86f594f7-fdec-48be-8152-e632668f119a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ClientFundsInvestmentsOriginalMaturityPeriod_d2c6b5b4-d1d3-4745-9d35-ca565cfd4a0e" xlink:href="adp-20200331.xsd#adp_ClientFundsInvestmentsOriginalMaturityPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_ClientFundsInvestmentsOriginalMaturityPeriod_d2c6b5b4-d1d3-4745-9d35-ca565cfd4a0e" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_PercentageOfAvailableForSaleSecuritiesWereRatedAaaOrAa_0d4dcc3b-f617-4c28-9910-e8864c6e8205" xlink:href="adp-20200331.xsd#adp_PercentageOfAvailableForSaleSecuritiesWereRatedAaaOrAa"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_adp_PercentageOfAvailableForSaleSecuritiesWereRatedAaaOrAa_0d4dcc3b-f617-4c28-9910-e8864c6e8205" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_bf10f902-3e84-4907-93e0-88b08da7ad44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_421290e9-e371-4a29-962e-1f519b4205e3" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_bf10f902-3e84-4907-93e0-88b08da7ad44" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_4ec07f9a-8299-4353-941b-358bb3e433b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_bf10f902-3e84-4907-93e0-88b08da7ad44" xlink:to="loc_us-gaap_FinancialInstrumentAxis_4ec07f9a-8299-4353-941b-358bb3e433b1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4ec07f9a-8299-4353-941b-358bb3e433b1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4ec07f9a-8299-4353-941b-358bb3e433b1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4ec07f9a-8299-4353-941b-358bb3e433b1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4ec07f9a-8299-4353-941b-358bb3e433b1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankCertificatesAndObligationsFHLBMember_abf84cbb-e5d4-4977-afea-67bfbae1e6b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalHomeLoanBankCertificatesAndObligationsFHLBMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_us-gaap_FederalHomeLoanBankCertificatesAndObligationsFHLBMember_abf84cbb-e5d4-4977-afea-67bfbae1e6b8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_FederalFarmCreditBanksMember_97268532-777d-4084-a008-96ed24c8c8f6" xlink:href="adp-20200331.xsd#adp_FederalFarmCreditBanksMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_FederalFarmCreditBanksMember_97268532-777d-4084-a008-96ed24c8c8f6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_SupranationalBondsMember_3e10b9cc-9caa-4042-ac92-29821e7006ce" xlink:href="adp-20200331.xsd#adp_SupranationalBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_SupranationalBondsMember_3e10b9cc-9caa-4042-ac92-29821e7006ce" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_FixedRateCreditCardMember_43a208eb-e089-48f9-8c67-021f2e274dae" xlink:href="adp-20200331.xsd#adp_FixedRateCreditCardMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_FixedRateCreditCardMember_43a208eb-e089-48f9-8c67-021f2e274dae" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AssetBackedAutoLoanReceivablesMember_1f7fd94f-592c-4fee-b8e7-b9f6b704af8d" xlink:href="adp-20200331.xsd#adp_AssetBackedAutoLoanReceivablesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_AssetBackedAutoLoanReceivablesMember_1f7fd94f-592c-4fee-b8e7-b9f6b704af8d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AssetBackedEquipmentLeaseReceivableMember_e30534ef-e2fe-44c1-9fe4-1f1a6f09ee14" xlink:href="adp-20200331.xsd#adp_AssetBackedEquipmentLeaseReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_AssetBackedEquipmentLeaseReceivableMember_e30534ef-e2fe-44c1-9fe4-1f1a6f09ee14" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_RateReductionReceivableMember_73ed7824-19e2-49e0-bf48-0cf6883bc838" xlink:href="adp-20200331.xsd#adp_RateReductionReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_adp_RateReductionReceivableMember_73ed7824-19e2-49e0-bf48-0cf6883bc838" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCorporateDebtSecuritiesMember_4e8b5a2f-58e4-4e19-99cb-2199fd1a3706" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_us-gaap_ForeignCorporateDebtSecuritiesMember_4e8b5a2f-58e4-4e19-99cb-2199fd1a3706" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_781489cd-6675-4852-873c-82c2cdc46965" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fe83c80f-cc82-4470-801f-e05f0595b568" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_781489cd-6675-4852-873c-82c2cdc46965" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_bf10f902-3e84-4907-93e0-88b08da7ad44" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5371458-27cb-4b5f-bc02-5509cc02d55a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_37d67f6a-dbf0-4b9e-a6f7-23a59e575e9a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5371458-27cb-4b5f-bc02-5509cc02d55a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_260e86dd-4550-4f21-bb0d-03fe9120608d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5371458-27cb-4b5f-bc02-5509cc02d55a" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_260e86dd-4550-4f21-bb0d-03fe9120608d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_cd86c32e-a4a1-4599-89d7-baecee5ce301" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5371458-27cb-4b5f-bc02-5509cc02d55a" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_cd86c32e-a4a1-4599-89d7-baecee5ce301" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsClassificationOfCorporateInvestmentsOnTheConsolidatedBalanceSheetsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsClassificationOfCorporateInvestmentsOnTheConsolidatedBalanceSheetsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsClassificationOfCorporateInvestmentsOnTheConsolidatedBalanceSheetsDetails" xlink:type="extended" id="i580efec7efc142bfaab5540909d6affa_CorporateInvestmentsandFundsHeldForClientsClassificationOfCorporateInvestmentsOnTheConsolidatedBalanceSheetsDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsScheduleOfInvestmentOfFundsHeldForClientsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsScheduleOfInvestmentOfFundsHeldForClientsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsScheduleOfInvestmentOfFundsHeldForClientsDetails" xlink:type="extended" id="i7fbbc73d4efb417f97d43d999f9e44c4_CorporateInvestmentsandFundsHeldForClientsScheduleOfInvestmentOfFundsHeldForClientsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_4bab7269-6fa1-4bb9-a43b-979f01c63cd5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_c4d38b07-fe88-468c-aa50-9ca22e68a949" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_4bab7269-6fa1-4bb9-a43b-979f01c63cd5" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_c4d38b07-fe88-468c-aa50-9ca22e68a949" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesRestricted_ed82c5c6-14f1-4fb9-b245-11b177de2fea" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesRestricted"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_4bab7269-6fa1-4bb9-a43b-979f01c63cd5" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesRestricted_ed82c5c6-14f1-4fb9-b245-11b177de2fea" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_TotalFundsHeldToSatisfyClientFundObligationAtCarryingValue_84c321e8-dcc3-43f2-a427-04a989b7b933" xlink:href="adp-20200331.xsd#adp_TotalFundsHeldToSatisfyClientFundObligationAtCarryingValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_4bab7269-6fa1-4bb9-a43b-979f01c63cd5" xlink:to="loc_adp_TotalFundsHeldToSatisfyClientFundObligationAtCarryingValue_84c321e8-dcc3-43f2-a427-04a989b7b933" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_043afe5e-8912-41dc-bb95-343e04c73c82" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_4bab7269-6fa1-4bb9-a43b-979f01c63cd5" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_043afe5e-8912-41dc-bb95-343e04c73c82" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AccountClassificationAxis_15134a79-84ea-4c57-909a-4689b3d69374" xlink:href="adp-20200331.xsd#adp_AccountClassificationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_043afe5e-8912-41dc-bb95-343e04c73c82" xlink:to="loc_adp_AccountClassificationAxis_15134a79-84ea-4c57-909a-4689b3d69374" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AccountClassificationDomain_15134a79-84ea-4c57-909a-4689b3d69374_default" xlink:href="adp-20200331.xsd#adp_AccountClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_adp_AccountClassificationAxis_15134a79-84ea-4c57-909a-4689b3d69374" xlink:to="loc_adp_AccountClassificationDomain_15134a79-84ea-4c57-909a-4689b3d69374_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_AccountClassificationDomain_0de8b69d-f349-4ba4-806b-6e1b3090014f" xlink:href="adp-20200331.xsd#adp_AccountClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_adp_AccountClassificationAxis_15134a79-84ea-4c57-909a-4689b3d69374" xlink:to="loc_adp_AccountClassificationDomain_0de8b69d-f349-4ba4-806b-6e1b3090014f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CurrentMember_97e06bd3-eade-40be-b541-741eef48f543" xlink:href="adp-20200331.xsd#adp_CurrentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adp_AccountClassificationDomain_0de8b69d-f349-4ba4-806b-6e1b3090014f" xlink:to="loc_adp_CurrentMember_97e06bd3-eade-40be-b541-741eef48f543" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_NoncurrentMember_6327ab3a-5d4e-48ad-b2e9-7dc7536f9527" xlink:href="adp-20200331.xsd#adp_NoncurrentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adp_AccountClassificationDomain_0de8b69d-f349-4ba4-806b-6e1b3090014f" xlink:to="loc_adp_NoncurrentMember_6327ab3a-5d4e-48ad-b2e9-7dc7536f9527" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsExpectedMaturitiesOfAvailableForSaleSecuritiesDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#CorporateInvestmentsandFundsHeldForClientsExpectedMaturitiesOfAvailableForSaleSecuritiesDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CorporateInvestmentsandFundsHeldForClientsExpectedMaturitiesOfAvailableForSaleSecuritiesDetails" xlink:type="extended" id="id09453d6d6da4f7b8e7e95f90b0a042f_CorporateInvestmentsandFundsHeldForClientsExpectedMaturitiesOfAvailableForSaleSecuritiesDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/Leases" xlink:type="simple" xlink:href="adp-20200331.xsd#Leases"/>
<link:definitionLink xlink:role="http://www.adp.com/role/Leases" xlink:type="extended" id="i2c19d11036844cb396909bbd868bb632_Leases"/>
<link:roleRef roleURI="http://www.adp.com/role/LeasesTables" xlink:type="simple" xlink:href="adp-20200331.xsd#LeasesTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LeasesTables" xlink:type="extended" id="icfcb12c0fae4496e9a3d80057c9d72f1_LeasesTables"/>
<link:roleRef roleURI="http://www.adp.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#LeasesNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LeasesNarrativeDetails" xlink:type="extended" id="i70ff471db4074e5da7a835cbb97f7108_LeasesNarrativeDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/LeasesLeaseCostDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#LeasesLeaseCostDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LeasesLeaseCostDetails" xlink:type="extended" id="ib64234867b0f4940a6fc45cd8ad50145_LeasesLeaseCostDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/LeasesRightofUseAssetsandOperatingLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#LeasesRightofUseAssetsandOperatingLeaseLiabilitiesDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LeasesRightofUseAssetsandOperatingLeaseLiabilitiesDetails" xlink:type="extended" id="i4df57228837942bfb5ac826425eacf26_LeasesRightofUseAssetsandOperatingLeaseLiabilitiesDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/LeasesOperatingLeaseMaturitiesDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#LeasesOperatingLeaseMaturitiesDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LeasesOperatingLeaseMaturitiesDetails" xlink:type="extended" id="i268deac45cbd4ff382d28a3a2fe05f9b_LeasesOperatingLeaseMaturitiesDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangibleAssetsnet" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangibleAssetsnet"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangibleAssetsnet" xlink:type="extended" id="i850275a36c9b43a38997570194d768e0_GoodwillandIntangibleAssetsnet"/>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetTables" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangiblesAssetsnetTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetTables" xlink:type="extended" id="i148915f6ed3d408ba85eacd35594ec45_GoodwillandIntangiblesAssetsnetTables"/>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetChangesInGoodwillDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangiblesAssetsnetChangesInGoodwillDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetChangesInGoodwillDetails" xlink:type="extended" id="ic54fba008238471b92ad1ce9a9476e3d_GoodwillandIntangiblesAssetsnetChangesInGoodwillDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_e97dd727-130b-41cc-ab55-e0b7767ec8d4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_2c37240a-ad42-43e8-be50-0ac354913a6e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_e97dd727-130b-41cc-ab55-e0b7767ec8d4" xlink:to="loc_us-gaap_GoodwillRollForward_2c37240a-ad42-43e8-be50-0ac354913a6e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_73af112e-4435-433c-896a-664ce6a956c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_2c37240a-ad42-43e8-be50-0ac354913a6e" xlink:to="loc_us-gaap_Goodwill_73af112e-4435-433c-896a-664ce6a956c7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_c908a869-7d85-4c2d-89c4-3922cb0d77e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillPeriodIncreaseDecrease"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_2c37240a-ad42-43e8-be50-0ac354913a6e" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_c908a869-7d85-4c2d-89c4-3922cb0d77e6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_edceb8a6-2f05-4541-9329-b6ba8431dfe7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_2c37240a-ad42-43e8-be50-0ac354913a6e" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_edceb8a6-2f05-4541-9329-b6ba8431dfe7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_0d571e9e-49cd-452f-86ae-00245bcd3292" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_ffbe18e5-6614-4aa2-9133-2e0f1c816f98" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfGoodwillTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_e97dd727-130b-41cc-ab55-e0b7767ec8d4" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_ffbe18e5-6614-4aa2-9133-2e0f1c816f98" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_ffbe18e5-6614-4aa2-9133-2e0f1c816f98" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b" xlink:to="loc_us-gaap_SegmentDomain_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_868c6db0-433b-4b20-9504-a118ca7c6c9e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_11c867e8-e85f-4cf4-b3e9-bcccf712cc1b" xlink:to="loc_us-gaap_SegmentDomain_868c6db0-433b-4b20-9504-a118ca7c6c9e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_EmployerServicesSegmentMember_43cb755c-8afe-4cde-9bf4-2e623fd3a042" xlink:href="adp-20200331.xsd#adp_EmployerServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_868c6db0-433b-4b20-9504-a118ca7c6c9e" xlink:to="loc_adp_EmployerServicesSegmentMember_43cb755c-8afe-4cde-9bf4-2e623fd3a042" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_PeoServicesSegmentMember_644b1234-2079-4466-9bf4-98e9d6d34cad" xlink:href="adp-20200331.xsd#adp_PeoServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_868c6db0-433b-4b20-9504-a118ca7c6c9e" xlink:to="loc_adp_PeoServicesSegmentMember_644b1234-2079-4466-9bf4-98e9d6d34cad" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetComponentsOfFiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangiblesAssetsnetComponentsOfFiniteLivedIntangibleAssetsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetComponentsOfFiniteLivedIntangibleAssetsDetails" xlink:type="extended" id="i38f0cd977acd410fbb620ecc22c8d7a2_GoodwillandIntangiblesAssetsnetComponentsOfFiniteLivedIntangibleAssetsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_27cc525a-11c6-4567-bbe6-c491cce4a20f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f49af194-a6e3-497d-8b34-8b36875dd891" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_27cc525a-11c6-4567-bbe6-c491cce4a20f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f49af194-a6e3-497d-8b34-8b36875dd891" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_efbc0814-95c0-4746-9d5d-5eec61c7359f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_27cc525a-11c6-4567-bbe6-c491cce4a20f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_efbc0814-95c0-4746-9d5d-5eec61c7359f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a0b5457a-7ec9-4657-87c5-a17cd8d484e4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_27cc525a-11c6-4567-bbe6-c491cce4a20f" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a0b5457a-7ec9-4657-87c5-a17cd8d484e4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_beca1c65-9e44-446d-9580-ee67b3d923cd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_27cc525a-11c6-4567-bbe6-c491cce4a20f" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_beca1c65-9e44-446d-9580-ee67b3d923cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20557a42-96f3-476a-ad60-d43b7dd3508d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_beca1c65-9e44-446d-9580-ee67b3d923cd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20557a42-96f3-476a-ad60-d43b7dd3508d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_20557a42-96f3-476a-ad60-d43b7dd3508d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20557a42-96f3-476a-ad60-d43b7dd3508d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_20557a42-96f3-476a-ad60-d43b7dd3508d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_eb1daad6-b7c9-4d30-9e00-5dab00345a0c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_20557a42-96f3-476a-ad60-d43b7dd3508d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_eb1daad6-b7c9-4d30-9e00-5dab00345a0c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_f8416e82-0a64-4e6d-af71-267e9183c686" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_eb1daad6-b7c9-4d30-9e00-5dab00345a0c" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_f8416e82-0a64-4e6d-af71-267e9183c686" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerListsMember_03692d14-c02b-461c-8e8d-d90b314840c0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerListsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_eb1daad6-b7c9-4d30-9e00-5dab00345a0c" xlink:to="loc_us-gaap_CustomerListsMember_03692d14-c02b-461c-8e8d-d90b314840c0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_d59de925-bfed-462d-bb1e-0bde033ed77d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_eb1daad6-b7c9-4d30-9e00-5dab00345a0c" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_d59de925-bfed-462d-bb1e-0bde033ed77d" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangiblesAssetsnetNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetNarrativeDetails" xlink:type="extended" id="i8200fca9920643cd8b70eb3ab1808ca3_GoodwillandIntangiblesAssetsnetNarrativeDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c2dd9045-18bf-498d-b6df-d64974ace2c1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_5beef5d7-f49a-4c5d-ac1a-2748b20ddf75" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c2dd9045-18bf-498d-b6df-d64974ace2c1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_5beef5d7-f49a-4c5d-ac1a-2748b20ddf75" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_2bff2422-028c-4963-bd30-ba4292d9f583" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c2dd9045-18bf-498d-b6df-d64974ace2c1" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_2bff2422-028c-4963-bd30-ba4292d9f583" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_04c668d6-b495-4434-808f-edcb58336ae4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c2dd9045-18bf-498d-b6df-d64974ace2c1" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_04c668d6-b495-4434-808f-edcb58336ae4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cfea7d64-5f02-4f24-aae8-a1afea20f34f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_04c668d6-b495-4434-808f-edcb58336ae4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cfea7d64-5f02-4f24-aae8-a1afea20f34f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfea7d64-5f02-4f24-aae8-a1afea20f34f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cfea7d64-5f02-4f24-aae8-a1afea20f34f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfea7d64-5f02-4f24-aae8-a1afea20f34f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_229dc6b9-e0e5-4a5c-be55-e6d578b52cca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cfea7d64-5f02-4f24-aae8-a1afea20f34f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_229dc6b9-e0e5-4a5c-be55-e6d578b52cca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_b8487348-dce4-4c9c-a14a-b8943fea2942" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_229dc6b9-e0e5-4a5c-be55-e6d578b52cca" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_b8487348-dce4-4c9c-a14a-b8943fea2942" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerListsMember_9f6cba90-1cbd-44cc-8808-8fdd9a5d57f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerListsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_229dc6b9-e0e5-4a5c-be55-e6d578b52cca" xlink:to="loc_us-gaap_CustomerListsMember_9f6cba90-1cbd-44cc-8808-8fdd9a5d57f3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_9a51b284-1b6a-467e-91f3-26d598c2cba7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_229dc6b9-e0e5-4a5c-be55-e6d578b52cca" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_9a51b284-1b6a-467e-91f3-26d598c2cba7" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetScheduleOfFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#GoodwillandIntangiblesAssetsnetScheduleOfFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/GoodwillandIntangiblesAssetsnetScheduleOfFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended" id="ic7c89f38905e4ae680221f9c86a3d8bf_GoodwillandIntangiblesAssetsnetScheduleOfFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/ShorttermFinancing" xlink:type="simple" xlink:href="adp-20200331.xsd#ShorttermFinancing"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ShorttermFinancing" xlink:type="extended" id="id03e654e260144f68dc94772840f0b85_ShorttermFinancing"/>
<link:roleRef roleURI="http://www.adp.com/role/ShorttermFinancingTables" xlink:type="simple" xlink:href="adp-20200331.xsd#ShorttermFinancingTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ShorttermFinancingTables" xlink:type="extended" id="i13eab5be1267473c8a2798a775eb941c_ShorttermFinancingTables"/>
<link:roleRef roleURI="http://www.adp.com/role/ShorttermFinancingDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#ShorttermFinancingDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ShorttermFinancingDetails" xlink:type="extended" id="i00575a227f6e4621823d688f4109d814_ShorttermFinancingDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_8113caa5-0270-4ed8-834a-0290980c52b5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_8113caa5-0270-4ed8-834a-0290980c52b5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_LineOfCreditFacilityTermOfCredit_d8d571d8-ffc2-4fb2-b88a-75d1f86dc34d" xlink:href="adp-20200331.xsd#adp_LineOfCreditFacilityTermOfCredit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_LineOfCreditFacilityTermOfCredit_d8d571d8-ffc2-4fb2-b88a-75d1f86dc34d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_DebtInstrumentExtensionOptionTerm_4c23eb86-9bd0-4a74-a0fe-a7cf8ed16a2e" xlink:href="adp-20200331.xsd#adp_DebtInstrumentExtensionOptionTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_DebtInstrumentExtensionOptionTerm_4c23eb86-9bd0-4a74-a0fe-a7cf8ed16a2e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_LineOfCreditFacilityPotentiallyAvailableIncreaseInMaximumBorrowingCapacity_11dc0925-dbb0-46ac-b6ca-cffb6c8994a5" xlink:href="adp-20200331.xsd#adp_LineOfCreditFacilityPotentiallyAvailableIncreaseInMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_LineOfCreditFacilityPotentiallyAvailableIncreaseInMaximumBorrowingCapacity_11dc0925-dbb0-46ac-b6ca-cffb6c8994a5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_MaturitiesOfCommercialPaperRange_b5584452-18dc-4bcf-8af7-ac8dc5eb9390" xlink:href="adp-20200331.xsd#adp_MaturitiesOfCommercialPaperRange"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_MaturitiesOfCommercialPaperRange_b5584452-18dc-4bcf-8af7-ac8dc5eb9390" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ObligationsUnderReverseRepurchaseAgreements_c509daf7-d769-4b8b-9a17-aa2d18fd3536" xlink:href="adp-20200331.xsd#adp_ObligationsUnderReverseRepurchaseAgreements"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_ObligationsUnderReverseRepurchaseAgreements_c509daf7-d769-4b8b-9a17-aa2d18fd3536" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_MaturitiesOfShortTermFundingAgreements_a084ebc3-8af8-4a11-99f3-99366a17079c" xlink:href="adp-20200331.xsd#adp_MaturitiesOfShortTermFundingAgreements"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_MaturitiesOfShortTermFundingAgreements_a084ebc3-8af8-4a11-99f3-99366a17079c" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShorttermDebtAverageOutstandingAmount_b2432398-c92b-4311-bee3-9a19e1492035" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShorttermDebtAverageOutstandingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_us-gaap_ShorttermDebtAverageOutstandingAmount_b2432398-c92b-4311-bee3-9a19e1492035" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod_ef26f790-f69d-4e59-8589-066685aa62b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateDuringPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod_ef26f790-f69d-4e59-8589-066685aa62b1" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CommercialPaperWeightAverageMaturity_962a6c62-7945-46e6-a5f2-62cb90873a6e" xlink:href="adp-20200331.xsd#adp_CommercialPaperWeightAverageMaturity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_adp_CommercialPaperWeightAverageMaturity_962a6c62-7945-46e6-a5f2-62cb90873a6e" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_e2754a4a-ebfd-41b3-ba8f-e3ead48abe44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialPaper"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_us-gaap_CommercialPaper_e2754a4a-ebfd-41b3-ba8f-e3ead48abe44" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_c0f0db79-1d5b-40a2-8306-3ff65bb92706" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShortTermDebtLineItems_94ee9468-b72c-43ae-b7e1-7b2d014b9cfe" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_c0f0db79-1d5b-40a2-8306-3ff65bb92706" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_c0f0db79-1d5b-40a2-8306-3ff65bb92706" xlink:to="loc_us-gaap_DebtInstrumentAxis_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_ab46cb6a-8d28-41b2-bff9-62cf16c2e93a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ThreeHundredAndSixtyFourDayCreditFacilityMember_b77bc05f-4398-47f8-9a5c-ba436be2c658" xlink:href="adp-20200331.xsd#adp_ThreeHundredAndSixtyFourDayCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_adp_ThreeHundredAndSixtyFourDayCreditFacilityMember_b77bc05f-4398-47f8-9a5c-ba436be2c658" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CreditFacilityExpiringInJuneTwoThousandTwentyFourMember_ba7f54be-92c4-4528-8329-126c4472a6a0" xlink:href="adp-20200331.xsd#adp_CreditFacilityExpiringInJuneTwoThousandTwentyFourMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_adp_CreditFacilityExpiringInJuneTwoThousandTwentyFourMember_ba7f54be-92c4-4528-8329-126c4472a6a0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_CreditFacilityExpiringInJuneTwoThousandTwentyThreeMember_1a6d23d8-b02a-4d75-99f0-0af1d698fd9c" xlink:href="adp-20200331.xsd#adp_CreditFacilityExpiringInJuneTwoThousandTwentyThreeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_adp_CreditFacilityExpiringInJuneTwoThousandTwentyThreeMember_1a6d23d8-b02a-4d75-99f0-0af1d698fd9c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_9fe3003b-023a-4ff7-8867-dde33c70594d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialPaperMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_us-gaap_CommercialPaperMember_9fe3003b-023a-4ff7-8867-dde33c70594d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ShortTermCommercialPaperProgramMember_0b8d9940-7856-4201-8394-03cb55fe6789" xlink:href="adp-20200331.xsd#adp_ShortTermCommercialPaperProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_adp_ShortTermCommercialPaperProgramMember_0b8d9940-7856-4201-8394-03cb55fe6789" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ReverseRepurchaseAgreementsMember_1f30e2b7-1e95-4560-8947-9e0a0da872d5" xlink:href="adp-20200331.xsd#adp_ReverseRepurchaseAgreementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2a5ee313-edd9-4d0d-9c11-d931d09900e6" xlink:to="loc_adp_ReverseRepurchaseAgreementsMember_1f30e2b7-1e95-4560-8947-9e0a0da872d5" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/LongtermDebt" xlink:type="simple" xlink:href="adp-20200331.xsd#LongtermDebt"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LongtermDebt" xlink:type="extended" id="ide2d60338ad84a919ee9a66434949973_LongtermDebt"/>
<link:roleRef roleURI="http://www.adp.com/role/LongtermDebtTables" xlink:type="simple" xlink:href="adp-20200331.xsd#LongtermDebtTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LongtermDebtTables" xlink:type="extended" id="ic4adb3cbf800414fac9a676267b3c243_LongtermDebtTables"/>
<link:roleRef roleURI="http://www.adp.com/role/LongtermDebtDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#LongtermDebtDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/LongtermDebtDetails" xlink:type="extended" id="i0961efbfce8b4f3a93e45421f0dcec69_LongtermDebtDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_6af04304-fe4c-4200-9483-d031e895c37a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtInstrumentTerm_6af04304-fe4c-4200-9483-d031e895c37a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_79d0329f-a6ac-4f30-85dd-e72cbae520d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_79d0329f-a6ac-4f30-85dd-e72cbae520d5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_1bd4d351-5afa-49d5-a984-f62f8f894684" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_1bd4d351-5afa-49d5-a984-f62f8f894684" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_70c8cc14-7810-4e35-9bc8-19d59788bbb6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_NotesPayable_70c8cc14-7810-4e35-9bc8-19d59788bbb6" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtCurrent_0789d586-ace1-4a8c-8031-3295bd197096" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtCurrent_0789d586-ace1-4a8c-8031-3295bd197096" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums_08fd4806-b12f-49fb-af77-dad8da6f0687" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums_08fd4806-b12f-49fb-af77-dad8da6f0687" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermDebtNoncurrent_d26759ec-fb02-4ae8-9a77-54bea83bbbb4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLongTermDebtNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_OtherLongTermDebtNoncurrent_d26759ec-fb02-4ae8-9a77-54bea83bbbb4" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_7723711d-751d-4466-82d1-0c45df5573d7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_LongTermDebtFairValue_7723711d-751d-4466-82d1-0c45df5573d7" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3c2979ba-20a3-464e-9bdb-5b6620b01292" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3c2979ba-20a3-464e-9bdb-5b6620b01292" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_f205ce53-cee9-4498-a6e0-398733882444" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DerivativeNotionalAmount_f205ce53-cee9-4498-a6e0-398733882444" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_31e85043-76d5-4aea-8381-531a1735e7c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cbb6b838-b1e3-4226-9958-749509963a7b" xlink:to="loc_us-gaap_DebtInstrumentTable_31e85043-76d5-4aea-8381-531a1735e7c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_ffb70363-1204-429f-a576-1b4d9caada68" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_31e85043-76d5-4aea-8381-531a1735e7c7" xlink:to="loc_us-gaap_DebtInstrumentAxis_ffb70363-1204-429f-a576-1b4d9caada68" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ffb70363-1204-429f-a576-1b4d9caada68_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_ffb70363-1204-429f-a576-1b4d9caada68" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ffb70363-1204-429f-a576-1b4d9caada68_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c794c536-3229-45be-89e6-9251ff74243f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_ffb70363-1204-429f-a576-1b4d9caada68" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c794c536-3229-45be-89e6-9251ff74243f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_Notesdueon2020Member_f6c5b548-c4af-4ea5-b1e8-d3b026367037" xlink:href="adp-20200331.xsd#adp_Notesdueon2020Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c794c536-3229-45be-89e6-9251ff74243f" xlink:to="loc_adp_Notesdueon2020Member_f6c5b548-c4af-4ea5-b1e8-d3b026367037" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_Notesdueon2025Member_5acfb216-8ca6-4d42-beb9-3a8a5c715760" xlink:href="adp-20200331.xsd#adp_Notesdueon2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c794c536-3229-45be-89e6-9251ff74243f" xlink:to="loc_adp_Notesdueon2025Member_5acfb216-8ca6-4d42-beb9-3a8a5c715760" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_2e92d0ca-97fe-43e5-862b-8eba5699c9b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c794c536-3229-45be-89e6-9251ff74243f" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_2e92d0ca-97fe-43e5-862b-8eba5699c9b6" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/EmployeeBenefitPlans" xlink:type="simple" xlink:href="adp-20200331.xsd#EmployeeBenefitPlans"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EmployeeBenefitPlans" xlink:type="extended" id="ie569f3cef3ed41fda1cf97068ef8994e_EmployeeBenefitPlans"/>
<link:roleRef roleURI="http://www.adp.com/role/EmployeeBenefitPlansTables" xlink:type="simple" xlink:href="adp-20200331.xsd#EmployeeBenefitPlansTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EmployeeBenefitPlansTables" xlink:type="extended" id="i1544284f43744417a8a359f67222d49e_EmployeeBenefitPlansTables"/>
<link:roleRef roleURI="http://www.adp.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#EmployeeBenefitPlansNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="extended" id="i17904fd308dd4507a0ae251c681c453e_EmployeeBenefitPlansNarrativeDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_96d1d900-3fdc-419a-858c-a0ab0d702a8f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_96d1d900-3fdc-419a-858c-a0ab0d702a8f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_ebdff655-b980-4899-8a4d-924f0db45dae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:to="loc_us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_ebdff655-b980-4899-8a4d-924f0db45dae" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_3693b4ec-8ed8-4a32-b1f0-e667cd8eb919" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_3693b4ec-8ed8-4a32-b1f0-e667cd8eb919" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1bab3730-e84d-4f5b-aca3-8d57772d021f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1bab3730-e84d-4f5b-aca3-8d57772d021f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_944bbbb3-9700-4080-a8ea-4e39c7635e31" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d7ae984f-07d7-43d1-bc0b-0affcbf1c6f3" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_944bbbb3-9700-4080-a8ea-4e39c7635e31" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_7b623d95-c3b0-434c-a30d-f5bad61b3937" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_944bbbb3-9700-4080-a8ea-4e39c7635e31" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_7b623d95-c3b0-434c-a30d-f5bad61b3937" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_7b623d95-c3b0-434c-a30d-f5bad61b3937_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_7b623d95-c3b0-434c-a30d-f5bad61b3937" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_7b623d95-c3b0-434c-a30d-f5bad61b3937_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_de1f13fc-de7f-45e6-946c-966c243eb0b0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_7b623d95-c3b0-434c-a30d-f5bad61b3937" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_de1f13fc-de7f-45e6-946c-966c243eb0b0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_November2019AuthorizationMember_817adddd-4627-4941-9624-3cc730574f42" xlink:href="adp-20200331.xsd#adp_November2019AuthorizationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_de1f13fc-de7f-45e6-946c-966c243eb0b0" xlink:to="loc_adp_November2019AuthorizationMember_817adddd-4627-4941-9624-3cc730574f42" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e6d58200-d975-4fe3-ae62-bb87cbaac473" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_944bbbb3-9700-4080-a8ea-4e39c7635e31" xlink:to="loc_srt_RangeAxis_e6d58200-d975-4fe3-ae62-bb87cbaac473" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e6d58200-d975-4fe3-ae62-bb87cbaac473_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e6d58200-d975-4fe3-ae62-bb87cbaac473" xlink:to="loc_srt_RangeMember_e6d58200-d975-4fe3-ae62-bb87cbaac473_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e922faa2-a046-4b77-9f70-2274f7db5e92" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e6d58200-d975-4fe3-ae62-bb87cbaac473" xlink:to="loc_srt_RangeMember_e922faa2-a046-4b77-9f70-2274f7db5e92" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/EmployeeBenefitPlansComponentsOfStockBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#EmployeeBenefitPlansComponentsOfStockBasedCompensationExpenseDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EmployeeBenefitPlansComponentsOfStockBasedCompensationExpenseDetails" xlink:type="extended" id="ie3ea6b8b2e1b4ad397e69804fc43bc8f_EmployeeBenefitPlansComponentsOfStockBasedCompensationExpenseDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bb75b44-5d6a-41e2-865e-7cb08e24fcad" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_35e5c240-97ff-402c-b911-5bc9c48aed38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bb75b44-5d6a-41e2-865e-7cb08e24fcad" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_35e5c240-97ff-402c-b911-5bc9c48aed38" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_584fb025-d21d-4e9c-acb3-6bb8e9e9d58b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1bb75b44-5d6a-41e2-865e-7cb08e24fcad" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_584fb025-d21d-4e9c-acb3-6bb8e9e9d58b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_aadcb827-4184-4486-993a-a0f48129b7c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_584fb025-d21d-4e9c-acb3-6bb8e9e9d58b" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_aadcb827-4184-4486-993a-a0f48129b7c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_aadcb827-4184-4486-993a-a0f48129b7c3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_aadcb827-4184-4486-993a-a0f48129b7c3" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_aadcb827-4184-4486-993a-a0f48129b7c3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2d3f9db4-3380-4505-8567-60f8742dcf10" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_aadcb827-4184-4486-993a-a0f48129b7c3" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2d3f9db4-3380-4505-8567-60f8742dcf10" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_OperatingExpensesMember_369ded86-bfbb-41c6-821d-4ad750a10af8" xlink:href="adp-20200331.xsd#adp_OperatingExpensesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2d3f9db4-3380-4505-8567-60f8742dcf10" xlink:to="loc_adp_OperatingExpensesMember_369ded86-bfbb-41c6-821d-4ad750a10af8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_560be985-be65-417d-bd99-08471799d15e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2d3f9db4-3380-4505-8567-60f8742dcf10" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_560be985-be65-417d-bd99-08471799d15e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_SystemDevelopmentAndProgrammingCostsMember_0f2031e4-af5b-402e-adf1-8ffdffdd2508" xlink:href="adp-20200331.xsd#adp_SystemDevelopmentAndProgrammingCostsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2d3f9db4-3380-4505-8567-60f8742dcf10" xlink:to="loc_adp_SystemDevelopmentAndProgrammingCostsMember_0f2031e4-af5b-402e-adf1-8ffdffdd2508" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/EmployeeBenefitPlansComponentsOfNetPensionExpenseDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#EmployeeBenefitPlansComponentsOfNetPensionExpenseDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/EmployeeBenefitPlansComponentsOfNetPensionExpenseDetails" xlink:type="extended" id="i10cf483f008f4c8884fe80ee18c7abe5_EmployeeBenefitPlansComponentsOfNetPensionExpenseDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/IncomeTaxes" xlink:type="simple" xlink:href="adp-20200331.xsd#IncomeTaxes"/>
<link:definitionLink xlink:role="http://www.adp.com/role/IncomeTaxes" xlink:type="extended" id="i874229ea5de148c185aeacdfaff5e62d_IncomeTaxes"/>
<link:roleRef roleURI="http://www.adp.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#IncomeTaxesDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/IncomeTaxesDetails" xlink:type="extended" id="ib4d6fa29b206491e8abe633a8a3d2d24_IncomeTaxesDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/CommitmentsandContingencies" xlink:type="simple" xlink:href="adp-20200331.xsd#CommitmentsandContingencies"/>
<link:definitionLink xlink:role="http://www.adp.com/role/CommitmentsandContingencies" xlink:type="extended" id="if532133704f84cfba84274acfb1a8b91_CommitmentsandContingencies"/>
<link:roleRef roleURI="http://www.adp.com/role/StockholdersEquity" xlink:type="simple" xlink:href="adp-20200331.xsd#StockholdersEquity"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StockholdersEquity" xlink:type="extended" id="ie58dfbef5a1c40389a4a209d3c7317a9_StockholdersEquity"/>
<link:roleRef roleURI="http://www.adp.com/role/StockholdersEquityTables" xlink:type="simple" xlink:href="adp-20200331.xsd#StockholdersEquityTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StockholdersEquityTables" xlink:type="extended" id="i6ad267081f7b44c98b5e6277681dd659_StockholdersEquityTables"/>
<link:roleRef roleURI="http://www.adp.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#StockholdersEquityDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/StockholdersEquityDetails" xlink:type="extended" id="i54d4f605c2fc433b8f1098ce6845a492_StockholdersEquityDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_73ab8b4e-f794-45a5-abba-55fb1281530a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73ab8b4e-f794-45a5-abba-55fb1281530a" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_82c56349-1fa2-4109-bbd7-cb67ec73bed9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_82c56349-1fa2-4109-bbd7-cb67ec73bed9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_b1cff193-eec7-4adf-ba0e-ce04420ab6e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_NetIncomeLoss_b1cff193-eec7-4adf-ba0e-ce04420ab6e2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_725e607d-cad6-4aac-8e50-fd0e888a2a4a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_725e607d-cad6-4aac-8e50-fd0e888a2a4a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_StockBasedCompensationExpenseinEquity_cadfa14e-f38b-46c0-befe-02e17111e753" xlink:href="adp-20200331.xsd#adp_StockBasedCompensationExpenseinEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_adp_StockBasedCompensationExpenseinEquity_cadfa14e-f38b-46c0-befe-02e17111e753" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_f1e1cf87-85e1-4db8-ad0b-67dc13e6e96e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_f1e1cf87-85e1-4db8-ad0b-67dc13e6e96e" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_390f361a-06e4-47f9-bcbf-b06b38f9a1ca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_390f361a-06e4-47f9-bcbf-b06b38f9a1ca" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_0874af41-323b-4499-9ef9-79a63df434dd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_0874af41-323b-4499-9ef9-79a63df434dd" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_4af38c39-80fb-4932-bf5c-783c5f4b5f4b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_4af38c39-80fb-4932-bf5c-783c5f4b5f4b" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsStock_a2defdd2-7762-4078-b6be-fe3c353b45cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_DividendsStock_a2defdd2-7762-4078-b6be-fe3c353b45cb" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1_ac7a3d8c-93dc-4553-acf8-39ec6c388f73" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1d3cd444-6519-49c4-a757-cdaba59c930f" xlink:to="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1_ac7a3d8c-93dc-4553-acf8-39ec6c388f73" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_313fefff-1081-40b8-a17e-76b28b343f01" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_818137f7-aa8e-4bc8-ab2f-f9d70f15abf6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_73ab8b4e-f794-45a5-abba-55fb1281530a" xlink:to="loc_us-gaap_StatementTable_818137f7-aa8e-4bc8-ab2f-f9d70f15abf6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_59a04b20-e2fb-4340-8315-5fbb9deee826" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_818137f7-aa8e-4bc8-ab2f-f9d70f15abf6" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_59a04b20-e2fb-4340-8315-5fbb9deee826" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_59a04b20-e2fb-4340-8315-5fbb9deee826_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_59a04b20-e2fb-4340-8315-5fbb9deee826" xlink:to="loc_us-gaap_EquityComponentDomain_59a04b20-e2fb-4340-8315-5fbb9deee826_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_59a04b20-e2fb-4340-8315-5fbb9deee826" xlink:to="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5738231a-512a-4c7f-bb8d-11c77f0da045" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:to="loc_us-gaap_CommonStockMember_5738231a-512a-4c7f-bb8d-11c77f0da045" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_3b85a705-a924-4fd4-8860-be94bf218d46" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_3b85a705-a924-4fd4-8860-be94bf218d46" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_d93435b6-0a72-4347-82f5-23c58527fc38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:to="loc_us-gaap_RetainedEarningsMember_d93435b6-0a72-4347-82f5-23c58527fc38" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_07e1e8d9-bd77-40af-b5eb-c2780bfe930e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:to="loc_us-gaap_TreasuryStockMember_07e1e8d9-bd77-40af-b5eb-c2780bfe930e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_43bafde1-d0e1-484e-b2b6-4406e796f9f7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_936324a2-5076-469d-9f2b-116492088d27" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_43bafde1-d0e1-484e-b2b6-4406e796f9f7" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCI" xlink:type="simple" xlink:href="adp-20200331.xsd#ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCI"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCI" xlink:type="extended" id="i1999703449534708a7883606f17d0036_ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCI"/>
<link:roleRef roleURI="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCITables" xlink:type="simple" xlink:href="adp-20200331.xsd#ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCITables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCITables" xlink:type="extended" id="ib3310265f50643f9bc50ad6a62ad8961_ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCITables"/>
<link:roleRef roleURI="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCIDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCIDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCIDetails" xlink:type="extended" id="i9b7fa827e10d4a48bb3f2582b38847b0_ReclassificationsoutofAccumulatedOtherComprehensiveIncomeAOCIDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7f9ceff8-163e-49e1-af5c-887d5e8ebe32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7f9ceff8-163e-49e1-af5c-887d5e8ebe32" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fd3e1ab4-66cf-4a20-84f8-17363d759f81" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fd3e1ab4-66cf-4a20-84f8-17363d759f81" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_70225f1a-f840-4abf-a943-012c8de57fa3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_70225f1a-f840-4abf-a943-012c8de57fa3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_f10590dc-dd2f-4ea9-bb1e-2de72992fa4f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_f10590dc-dd2f-4ea9-bb1e-2de72992fa4f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_7034b298-f892-4275-ae63-af500eb18ef4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_7034b298-f892-4275-ae63-af500eb18ef4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax_2dc887f6-63b6-463d-9c3e-52f79bfa5503" xlink:href="adp-20200331.xsd#adp_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_b070862b-d3dc-49d9-b9a5-005e47cad8b6" xlink:to="loc_adp_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax_2dc887f6-63b6-463d-9c3e-52f79bfa5503" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_78b1be08-341f-4002-b9c9-bfe7e68c8e93" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_81c5d9c3-f2ae-4426-980a-e1dae7836eb5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_7f9ceff8-163e-49e1-af5c-887d5e8ebe32" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_81c5d9c3-f2ae-4426-980a-e1dae7836eb5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_7c06ef42-4742-4ea7-8bdc-f0eee13b760e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_81c5d9c3-f2ae-4426-980a-e1dae7836eb5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_7c06ef42-4742-4ea7-8bdc-f0eee13b760e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_7c06ef42-4742-4ea7-8bdc-f0eee13b760e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7c06ef42-4742-4ea7-8bdc-f0eee13b760e" xlink:to="loc_us-gaap_EquityComponentDomain_7c06ef42-4742-4ea7-8bdc-f0eee13b760e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7c06ef42-4742-4ea7-8bdc-f0eee13b760e" xlink:to="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f46ac4f7-4e2b-4e1c-bbf3-51dcac12d304" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f46ac4f7-4e2b-4e1c-bbf3-51dcac12d304" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_52a66815-b9e0-4dd7-b94e-4771d0352f47" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_52a66815-b9e0-4dd7-b94e-4771d0352f47" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_ffc15318-3a4b-4d6f-8649-4f7de2668830" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_ffc15318-3a4b-4d6f-8649-4f7de2668830" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_21a53ca3-8f0a-4bcb-9f06-a14af29c61f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f117a010-83e3-4c74-bae1-aa9d731a2ab2" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_21a53ca3-8f0a-4bcb-9f06-a14af29c61f3" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/InterimFinancialDatabySegment" xlink:type="simple" xlink:href="adp-20200331.xsd#InterimFinancialDatabySegment"/>
<link:definitionLink xlink:role="http://www.adp.com/role/InterimFinancialDatabySegment" xlink:type="extended" id="id400c8b06f3e4728ab267b418639b5ef_InterimFinancialDatabySegment"/>
<link:roleRef roleURI="http://www.adp.com/role/InterimFinancialDatabySegmentTables" xlink:type="simple" xlink:href="adp-20200331.xsd#InterimFinancialDatabySegmentTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/InterimFinancialDatabySegmentTables" xlink:type="extended" id="ia94262f5f2714397abf1e96630c90bf6_InterimFinancialDatabySegmentTables"/>
<link:roleRef roleURI="http://www.adp.com/role/InterimFinancialDatabySegmentNarrativeDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#InterimFinancialDatabySegmentNarrativeDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/InterimFinancialDatabySegmentNarrativeDetails" xlink:type="extended" id="i27581880495246a2aace87a560122fd7_InterimFinancialDatabySegmentNarrativeDetails"/>
<link:roleRef roleURI="http://www.adp.com/role/InterimFinancialDatabySegmentFinancialDataByStrategicBusinessUnitSegmentDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#InterimFinancialDatabySegmentFinancialDataByStrategicBusinessUnitSegmentDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/InterimFinancialDatabySegmentFinancialDataByStrategicBusinessUnitSegmentDetails" xlink:type="extended" id="ifb2588d5cb8b4f93b4221f4a621b8931_InterimFinancialDatabySegmentFinancialDataByStrategicBusinessUnitSegmentDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_b5adc257-934d-4253-b596-a7d65646269c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_a71c42dd-829a-4636-a8c2-733fbfb2a7c4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_b5adc257-934d-4253-b596-a7d65646269c" xlink:to="loc_us-gaap_Revenues_a71c42dd-829a-4636-a8c2-733fbfb2a7c4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_eb0a81a7-2e72-45ba-b98b-0918f1fb0de7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_b5adc257-934d-4253-b596-a7d65646269c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_eb0a81a7-2e72-45ba-b98b-0918f1fb0de7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_67f2e543-aab1-4e89-a76d-88a1167918d7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_b5adc257-934d-4253-b596-a7d65646269c" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_67f2e543-aab1-4e89-a76d-88a1167918d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_b8c8865d-c3ea-4421-b248-1a1e50343f49" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_67f2e543-aab1-4e89-a76d-88a1167918d7" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_b8c8865d-c3ea-4421-b248-1a1e50343f49" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b8c8865d-c3ea-4421-b248-1a1e50343f49_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b8c8865d-c3ea-4421-b248-1a1e50343f49" xlink:to="loc_us-gaap_SegmentDomain_b8c8865d-c3ea-4421-b248-1a1e50343f49_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_50a48ace-d80e-47ed-aa09-42bb7c7d70a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b8c8865d-c3ea-4421-b248-1a1e50343f49" xlink:to="loc_us-gaap_SegmentDomain_50a48ace-d80e-47ed-aa09-42bb7c7d70a9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_EmployerServicesSegmentMember_9f23ef20-c502-4535-b76e-2157e89eb7f1" xlink:href="adp-20200331.xsd#adp_EmployerServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_50a48ace-d80e-47ed-aa09-42bb7c7d70a9" xlink:to="loc_adp_EmployerServicesSegmentMember_9f23ef20-c502-4535-b76e-2157e89eb7f1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_adp_ProfessionalEmployeeOrganizationServicesSegmentMember_f9104c63-56bf-4417-93bb-c76ad2f5b6f2" xlink:href="adp-20200331.xsd#adp_ProfessionalEmployeeOrganizationServicesSegmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_50a48ace-d80e-47ed-aa09-42bb7c7d70a9" xlink:to="loc_adp_ProfessionalEmployeeOrganizationServicesSegmentMember_f9104c63-56bf-4417-93bb-c76ad2f5b6f2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_ada12ef2-6f20-4ffb-84db-03f83601dd2b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllOtherSegmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_50a48ace-d80e-47ed-aa09-42bb7c7d70a9" xlink:to="loc_us-gaap_AllOtherSegmentsMember_ada12ef2-6f20-4ffb-84db-03f83601dd2b" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.adp.com/role/SubsequentEvents" xlink:type="simple" xlink:href="adp-20200331.xsd#SubsequentEvents"/>
<link:definitionLink xlink:role="http://www.adp.com/role/SubsequentEvents" xlink:type="extended" id="i4e2c5a7864d04b81be65cf4e8040c181_SubsequentEvents"/>
<link:roleRef roleURI="http://www.adp.com/role/SubsequentEventsTables" xlink:type="simple" xlink:href="adp-20200331.xsd#SubsequentEventsTables"/>
<link:definitionLink xlink:role="http://www.adp.com/role/SubsequentEventsTables" xlink:type="extended" id="i879152791b074c6bbc2c91899859c13b_SubsequentEventsTables"/>
<link:roleRef roleURI="http://www.adp.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="adp-20200331.xsd#SubsequentEventsDetails"/>
<link:definitionLink xlink:role="http://www.adp.com/role/SubsequentEventsDetails" xlink:type="extended" id="i80bbbf28937f412b9eae2624c6bcc0cf_SubsequentEventsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_71561678-4a8c-44be-b59f-b528898bcd00" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_aafe7e4a-c0f6-40fe-b00e-e1cda439018e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_71561678-4a8c-44be-b59f-b528898bcd00" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_aafe7e4a-c0f6-40fe-b00e-e1cda439018e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_32c2b8d5-1ffc-4d94-9d5e-e53a928fbe43" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_71561678-4a8c-44be-b59f-b528898bcd00" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_32c2b8d5-1ffc-4d94-9d5e-e53a928fbe43" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_3c0d9cb1-10f3-407b-b7d7-a14d6e59ec0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_71561678-4a8c-44be-b59f-b528898bcd00" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_3c0d9cb1-10f3-407b-b7d7-a14d6e59ec0b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_bd8ad91a-97d6-4610-a486-7659ef1a9ccc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_71561678-4a8c-44be-b59f-b528898bcd00" xlink:to="loc_us-gaap_SubsequentEventTable_bd8ad91a-97d6-4610-a486-7659ef1a9ccc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_e0e344b0-9df2-474f-8b2d-b2d3f365b476" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_bd8ad91a-97d6-4610-a486-7659ef1a9ccc" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_e0e344b0-9df2-474f-8b2d-b2d3f365b476" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_e0e344b0-9df2-474f-8b2d-b2d3f365b476_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_e0e344b0-9df2-474f-8b2d-b2d3f365b476" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_e0e344b0-9df2-474f-8b2d-b2d3f365b476_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_3006bdb3-f562-4989-b475-e033f74fd756" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_e0e344b0-9df2-474f-8b2d-b2d3f365b476" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_3006bdb3-f562-4989-b475-e033f74fd756" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_3bdddac0-945a-45dc-9261-3d1a59918419" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_3006bdb3-f562-4989-b475-e033f74fd756" xlink:to="loc_us-gaap_SubsequentEventMember_3bdddac0-945a-45dc-9261-3d1a59918419" xlink:type="arc" order="0"/>
</link:definitionLink>
</link:linkbase>

Top
Filing Submission 0000008670-20-000020   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Sun., Apr. 28, 4:18:34.1pm ET