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

Patterson Companies, Inc. – ‘10-K’ for 4/24/21 – ‘EX-101.CAL’

On:  Wednesday, 6/23/21, at 4:26pm ET   ·   For:  4/24/21   ·   Accession #:  891024-21-6   ·   File #:  0-20572

Previous ‘10-K’:  ‘10-K’ on 6/24/20 for 4/25/20   ·   Next:  ‘10-K’ on 6/29/22 for 4/30/22   ·   Latest:  ‘10-K’ on 6/21/23 for 4/29/23   ·   29 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

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

 6/23/21  Patterson Companies, Inc.         10-K        4/24/21  116:13M

Annual Report   —   Form 10-K

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.31M 
 2: EX-10.1     Material Contract                                   HTML     30K 
 4: EX-10.10    Material Contract                                   HTML     53K 
 5: EX-10.11    Material Contract                                   HTML     52K 
 6: EX-10.12    Material Contract                                   HTML     79K 
 7: EX-10.32    Material Contract                                   HTML    406K 
 8: EX-10.35    Material Contract                                   HTML    397K 
 3: EX-10.9     Material Contract                                   HTML     51K 
 9: EX-21       Subsidiaries List                                   HTML     34K 
10: EX-23       Consent of Expert or Counsel                        HTML     30K 
11: EX-31.1     Certification -- §302 - SOA'02                      HTML     35K 
12: EX-31.2     Certification -- §302 - SOA'02                      HTML     35K 
13: EX-32.1     Certification -- §906 - SOA'02                      HTML     32K 
14: EX-32.2     Certification -- §906 - SOA'02                      HTML     32K 
21: R1          Cover                                               HTML     92K 
22: R2          Consolidated Balance Sheets                         HTML    155K 
23: R3          Consolidated Balance Sheets (Parenthetical)         HTML     41K 
24: R4          Consolidated Statements of Income and Other         HTML    135K 
                Comprehensive Income                                             
25: R5          Consolidated Statements of Changes in               HTML     96K 
                Stockholders' Equity                                             
26: R6          Consolidated Statements of Cash Flows               HTML    132K 
27: R7          Summary of Significant Accounting Policies          HTML     88K 
28: R8          Cash and Cash Equivalents                           HTML     37K 
29: R9          Receivables Securitization Program                  HTML     50K 
30: R10         Goodwill and Other Intangible Assets                HTML     65K 
31: R11         Property and Equipment                              HTML     44K 
32: R12         Debt                                                HTML     62K 
33: R13         Customer Financing                                  HTML     46K 
34: R14         Derivative Financial Instruments                    HTML     58K 
35: R15         Fair Value Measurements                             HTML     73K 
36: R16         Lease Commitments                                   HTML     46K 
37: R17         Income Taxes                                        HTML    112K 
38: R18         Business Combinations                               HTML     32K 
39: R19         Segment and Geographic Data                         HTML    121K 
40: R20         Stockholders' Equity                                HTML     51K 
41: R21         Stock-based Compensation                            HTML     95K 
42: R22         Litigation                                          HTML     42K 
43: R23         Quarterly Results (Unaudited)                       HTML     80K 
44: R24         Accumulated Other Comprehensive Loss ("Aocl")       HTML     42K 
45: R25         Subsequent Events                                   HTML     33K 
46: R26         Schedule II Valuation And Qualifying Accounts       HTML     76K 
47: R27         Summary of Significant Accounting Policies          HTML    109K 
                (Policies)                                                       
48: R28         Summary of Significant Accounting Policies          HTML     58K 
                (Tables)                                                         
49: R29         Cash and Cash Equivalents (Tables)                  HTML     36K 
50: R30         Receivables Securitization Program (Tables)         HTML     41K 
51: R31         Goodwill and Other Intangible Assets (Tables)       HTML     66K 
52: R32         Property and Equipment (Tables)                     HTML     44K 
53: R33         Debt (Tables)                                       HTML     59K 
54: R34         Customer Financing (Tables)                         HTML     41K 
55: R35         Derivative Financial Instruments (Tables)           HTML     55K 
56: R36         Fair Value Measurements (Tables)                    HTML     65K 
57: R37         Lease Commitments (Tables)                          HTML     48K 
58: R38         Income Taxes (Tables)                               HTML    111K 
59: R39         Segment and Geographic Data (Tables)                HTML    119K 
60: R40         Stockholders' Equity (Tables)                       HTML     40K 
61: R41         Stock-based Compensation (Tables)                   HTML     91K 
62: R42         Quarterly Results (Unaudited) (Tables)              HTML     80K 
63: R43         Accumulated Other Comprehensive Loss ("Aocl")       HTML     41K 
                (Tables)                                                         
64: R44         Summary of Significant Accounting Policies -        HTML     78K 
                Additional Information (Details)                                 
65: R45         Summary of Significant Accounting Policies -        HTML     38K 
                Related Party Transactions (Details)                             
66: R46         Summary of Significant Accounting Policies -        HTML     39K 
                Schedule of Other Income, Net (Details)                          
67: R47         Summary of Significant Accounting Policies -Other   HTML     39K 
                Non-current Assets (Details)                                     
68: R48         Summary of Significant Accounting Policies -        HTML     32K 
                Comprehensive Income (Details)                                   
69: R49         Summary of Significant Accounting Policies -        HTML     41K 
                Computation of Basic and Diluted Earnings Per                    
                Share (Details)                                                  
70: R50         Cash and Cash Equivalents (Details)                 HTML     38K 
71: R51         Receivables Securitization Program (Details)        HTML     46K 
72: R52         Receivables Securitization Program - Activity in    HTML     38K 
                DPP Receivable (Details)                                         
73: R53         Goodwill and Other Intangible Assets - Changes in   HTML     53K 
                Carrying Value of Goodwill (Details)                             
74: R54         Goodwill and Other Intangible Assets - Balances of  HTML     53K 
                Other Intangible Assets Excluding Goodwill                       
                (Details)                                                        
75: R55         Goodwill and Other Intangible Assets - Additional   HTML     41K 
                Information (Details)                                            
76: R56         Property and Equipment - Schedule of Property and   HTML     54K 
                Equipment (Details)                                              
77: R57         Debt - Long-Term Debt (Details)                     HTML     60K 
78: R58         Debt - Schedule of Debt Maturities (Details)        HTML     50K 
79: R59         Debt - Additional Information (Details)             HTML     64K 
80: R60         Customer Financing (Details)                        HTML     60K 
81: R61         Customer Financing - Activity in DPP Receivables    HTML     37K 
                (Details)                                                        
82: R62         Derivative Financial Instruments - Additional       HTML     63K 
                Information (Details)                                            
83: R63         Derivative Financial Instruments - Fair Value of    HTML     43K 
                Interest Rate Contracts Included in Consolidated                 
                Balance Sheets (Details)                                         
84: R64         Derivative Financial Instruments - Effect of        HTML     41K 
                Interest Rate Contracts and Interest Rate Swaps on               
                Consolidated Statements of Income and Other                      
                Comprehensive Income (Details)                                   
85: R65         Fair Value Measurements - Assets and Liabilities    HTML     56K 
                Measured at Fair Value on Recurring Basis                        
                (Details)                                                        
86: R66         Fair Value Measurements - Additional Information    HTML     44K 
                (Details)                                                        
87: R67         Leases - Additional Information (Details)           HTML     34K 
88: R68         Leases - Future Maturities of Lease Liabilities     HTML     49K 
                (Details)                                                        
89: R69         Leases - Supplemental Information Related to        HTML     40K 
                Leases (Details)                                                 
90: R70         Income Taxes - Income From Continuing Operations    HTML     40K 
                Before Taxes (Details)                                           
91: R71         Income Taxes - Components of Provision for Income   HTML     58K 
                Taxes (Details)                                                  
92: R72         Income Taxes - Additional Information (Details)     HTML     51K 
93: R73         Income Taxes - Components of Deferred Tax Assets    HTML     73K 
                (Liabilities) (Details)                                          
94: R74         Income Taxes - Summary of Effective Income Tax      HTML     55K 
                Expense Reconciliation (Details)                                 
95: R75         Income Taxes - Summary of Changes in Gross Amounts  HTML     44K 
                of Unrecognized Tax Benefits (Details)                           
96: R76         Technology Partner Innovations, LLC ("Tpi")         HTML     48K 
                (Details)                                                        
97: R77         Segment and Geographic Data - Additional            HTML     32K 
                Information (Details)                                            
98: R78         Segment and Geographic Data - Information by        HTML     82K 
                Geographic Area (Details)                                        
99: R79         Segment and Geographic Data - Sales Information by  HTML     69K 
                Product (Details)                                                
100: R80         Segment and Geographic Data - Information about     HTML     59K  
                Reportable Segments (Details)                                    
101: R81         Stockholders' Equity - Cash Dividends Declared and  HTML     33K  
                Paid (Details)                                                   
102: R82         Stockholders' Equity - Additional Information       HTML     73K  
                (Details)                                                        
103: R83         Stock-based Compensation - Additional Information   HTML    134K  
                (Details)                                                        
104: R84         Stock-based Compensation - Summary of               HTML     49K  
                Weighted-Average Assumptions (Details)                           
105: R85         Stock-based Compensation - Summary of Stock         HTML     71K  
                Options (Details)                                                
106: R86         Stock-based Compensation - Summary of Non-Vested    HTML     67K  
                Restricted Stock Awards and Performance Unit                     
                Awards (Details)                                                 
107: R87         Legal Proceedings Legal (Details)                   HTML     42K  
108: R88         Quarterly Results (unaudited) - Summary of          HTML    120K  
                Quarterly Results (Details)                                      
109: R89         Accumulated Other Comprehensive Loss ("AOCL") -     HTML     48K  
                Summary of Accumulated Other Comprehensive Income                
                (Loss) (Details)                                                 
110: R90         Accumulated Other Comprehensive Loss ("AOCL") -     HTML     36K  
                Additional Information (Details)                                 
111: R91         Subsequent Events (Details)                         HTML     41K  
112: R92         Schedule II Valuation and Qualifying Accounts       HTML     53K  
                (Details)                                                        
114: XML         IDEA XML File -- Filing Summary                      XML    205K  
20: XML         XBRL Instance -- pdco-20210424_htm                   XML   2.87M 
113: EXCEL       IDEA Workbook of Financial Reports                  XLSX    138K  
16: EX-101.CAL  XBRL Calculations -- pdco-20210424_cal               XML    248K 
17: EX-101.DEF  XBRL Definitions -- pdco-20210424_def                XML    645K 
18: EX-101.LAB  XBRL Labels -- pdco-20210424_lab                     XML   2.08M 
19: EX-101.PRE  XBRL Presentations -- pdco-20210424_pre              XML   1.20M 
15: EX-101.SCH  XBRL Schema -- pdco-20210424                         XSD    211K 
115: JSON        XBRL Instance as JSON Data -- MetaLinks              527±   774K  
116: ZIP         XBRL Zipped Folder -- 0000891024-21-000006-xbrl      Zip    821K

‘EX-101.CAL’   —   XBRL Calculations — pdco-20210424_cal

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2021 Workiva -->
<!-- r:980291d7-3661-4747-a718-96bca3f89432,g:ab8c8bf2-5952-499f-b9d0-5c795988a5b4 -->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="pdco-20210424.xsd#CONSOLIDATEDBALANCESHEETS"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_06c70384-f26c-47f9-b8b7-5727ab15669e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_91652b7e-6f51-4a71-858c-bfe79266befe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_06c70384-f26c-47f9-b8b7-5727ab15669e" xlink:to="loc_us-gaap_StockholdersEquity_91652b7e-6f51-4a71-858c-bfe79266befe" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_c9721718-9f09-42d2-9cc2-b645cd208d7b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MinorityInterest"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_06c70384-f26c-47f9-b8b7-5727ab15669e" xlink:to="loc_us-gaap_MinorityInterest_c9721718-9f09-42d2-9cc2-b645cd208d7b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_26021169-a3e1-4d28-a62d-0964a58559b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:to="loc_us-gaap_LiabilitiesCurrent_26021169-a3e1-4d28-a62d-0964a58559b3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_392e155a-6c2d-4803-9996-e392f6fe6965" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_392e155a-6c2d-4803-9996-e392f6fe6965" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9cbd6087-7e22-4995-956a-a5cf6d264763" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9cbd6087-7e22-4995-956a-a5cf6d264763" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_dab214f3-93f3-4778-82dc-5e859ee62b12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_dab214f3-93f3-4778-82dc-5e859ee62b12" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_54bdd6ba-b2db-45d6-b6e7-6927bb2ed854" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f7016b9e-e3bc-466b-9208-5493148abd8d" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_54bdd6ba-b2db-45d6-b6e7-6927bb2ed854" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_f8bc6369-9e72-498f-a3d0-d96de6913c80" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_AccountsPayableCurrent_f8bc6369-9e72-498f-a3d0-d96de6913c80" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8a84f190-bb49-41ca-99c0-6d8dffc2aa5b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8a84f190-bb49-41ca-99c0-6d8dffc2aa5b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_8dbb73d5-23e1-4a80-b80d-056db300d712" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_8dbb73d5-23e1-4a80-b80d-056db300d712" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_a8952eeb-afcc-4aa8-8ed6-3f478add6dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_a8952eeb-afcc-4aa8-8ed6-3f478add6dbc" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_07e58835-6fb8-403b-9eb2-d5bd8a456acf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_LongTermDebtCurrent_07e58835-6fb8-403b-9eb2-d5bd8a456acf" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LinesOfCreditCurrent_0ee949e6-c8ae-4b44-864c-74617b873fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LinesOfCreditCurrent"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_0f36facc-cc3b-4756-acb3-6f3c12b85262" xlink:to="loc_us-gaap_LinesOfCreditCurrent_0ee949e6-c8ae-4b44-864c-74617b873fc5" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_d8949875-6d0c-43ea-b7f4-9c50ca3179a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_a87abf96-ea6e-4810-b15a-0b68648b2c16" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d8949875-6d0c-43ea-b7f4-9c50ca3179a4" xlink:to="loc_us-gaap_Liabilities_a87abf96-ea6e-4810-b15a-0b68648b2c16" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6fa3587c-c672-4440-925d-6a266f20ac1d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d8949875-6d0c-43ea-b7f4-9c50ca3179a4" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6fa3587c-c672-4440-925d-6a266f20ac1d" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_71a02cbd-6661-44cd-aee2-34ce5454826f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:to="loc_us-gaap_CommonStockValue_71a02cbd-6661-44cd-aee2-34ce5454826f" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_e5ca366a-ad53-427b-8f45-cb610d35fbfd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_e5ca366a-ad53-427b-8f45-cb610d35fbfd" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fe97ef86-c121-41f9-9008-c50c8e893e42" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fe97ef86-c121-41f9-9008-c50c8e893e42" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_e2880ded-0d79-48ea-8f8c-58686fca1ff3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_e2880ded-0d79-48ea-8f8c-58686fca1ff3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnearnedESOPShares_b459a2d7-5262-4225-857f-7b14a2683eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnearnedESOPShares"/>
<link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_eda701ed-8842-4dad-b4b6-5177a34fa859" xlink:to="loc_us-gaap_UnearnedESOPShares_b459a2d7-5262-4225-857f-7b14a2683eaf" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_bf92c0c0-73e1-4e0f-87e4-78552b6f9f84" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_AssetsCurrent_bf92c0c0-73e1-4e0f-87e4-78552b6f9f84" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3387973f-5f8a-4a38-a557-8949a8eaffa7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_3387973f-5f8a-4a38-a557-8949a8eaffa7" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_08ca4d9a-39e8-4659-ae18-6dfe72471111" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_08ca4d9a-39e8-4659-ae18-6dfe72471111" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_018e9ba7-3a95-4950-95e7-f243482eee4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_018e9ba7-3a95-4950-95e7-f243482eee4b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_7f30239c-1737-41bb-8cfe-85b446a1d0ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_Goodwill_7f30239c-1737-41bb-8cfe-85b446a1d0ec" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_beef99c0-b56b-49cb-a888-4f0f30f373d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_beef99c0-b56b-49cb-a888-4f0f30f373d4" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_9a3b29e1-1b36-45db-94bd-46589152e539" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_67270b79-8724-4538-8353-e2e1e63a1ada" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_9a3b29e1-1b36-45db-94bd-46589152e539" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_6e82a88e-c22f-49fe-8d9d-e1c7ee60ea6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_c5034f52-db91-4523-b9e7-d7b5b0534722" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_6e82a88e-c22f-49fe-8d9d-e1c7ee60ea6b" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_c5034f52-db91-4523-b9e7-d7b5b0534722" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_67dd0b36-2b6d-44c5-ba22-d06baa7c61af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivablesNetCurrent"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_6e82a88e-c22f-49fe-8d9d-e1c7ee60ea6b" xlink:to="loc_us-gaap_ReceivablesNetCurrent_67dd0b36-2b6d-44c5-ba22-d06baa7c61af" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_684a9f79-2d44-47f2-bc34-bd11f5ee8429" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_6e82a88e-c22f-49fe-8d9d-e1c7ee60ea6b" xlink:to="loc_us-gaap_InventoryNet_684a9f79-2d44-47f2-bc34-bd11f5ee8429" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_1f291e3b-1c69-44e4-b5c7-0240683dca7f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsCurrent"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_6e82a88e-c22f-49fe-8d9d-e1c7ee60ea6b" xlink:to="loc_us-gaap_OtherAssetsCurrent_1f291e3b-1c69-44e4-b5c7-0240683dca7f" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEANDOTHERCOMPREHENSIVEINCOME" xlink:type="simple" xlink:href="pdco-20210424.xsd#CONSOLIDATEDSTATEMENTSOFINCOMEANDOTHERCOMPREHENSIVEINCOME"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/CONSOLIDATEDSTATEMENTSOFINCOMEANDOTHERCOMPREHENSIVEINCOME" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_371f96e4-4bfb-4052-bbbf-b14eb10630a7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_04f47702-9b01-4d54-9cbc-65a92829636c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_371f96e4-4bfb-4052-bbbf-b14eb10630a7" xlink:to="loc_us-gaap_ProfitLoss_04f47702-9b01-4d54-9cbc-65a92829636c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3ccfd1ee-9912-437d-a26b-8dbb9b3fd0bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_371f96e4-4bfb-4052-bbbf-b14eb10630a7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3ccfd1ee-9912-437d-a26b-8dbb9b3fd0bc" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_dd853fa1-622a-4a8e-b1ac-8951e5aa49cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_371f96e4-4bfb-4052-bbbf-b14eb10630a7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_dd853fa1-622a-4a8e-b1ac-8951e5aa49cf" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_18bffe5c-9f5f-4563-9f0c-4d3faebb701a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_143c9fb3-19c9-4044-b207-7d2b08e4bc71" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_18bffe5c-9f5f-4563-9f0c-4d3faebb701a" xlink:to="loc_us-gaap_ProfitLoss_143c9fb3-19c9-4044-b207-7d2b08e4bc71" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a6725ed2-1e38-4044-84a4-dc49c6041315" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_18bffe5c-9f5f-4563-9f0c-4d3faebb701a" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a6725ed2-1e38-4044-84a4-dc49c6041315" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_d3865a1c-9e0d-46c6-8800-f25df66e02cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_952246ed-e921-4877-9a3a-97f5265d63ef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_d3865a1c-9e0d-46c6-8800-f25df66e02cf" xlink:to="loc_us-gaap_GrossProfit_952246ed-e921-4877-9a3a-97f5265d63ef" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_9b14f227-0a7e-4a63-8139-ead896fb40a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingCostsAndExpenses"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_d3865a1c-9e0d-46c6-8800-f25df66e02cf" xlink:to="loc_us-gaap_OperatingCostsAndExpenses_9b14f227-0a7e-4a63-8139-ead896fb40a6" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_d67bbd37-292e-4148-a606-3b5d89c49e91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
<link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_d3865a1c-9e0d-46c6-8800-f25df66e02cf" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_d67bbd37-292e-4148-a606-3b5d89c49e91" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_33a07a93-35b6-4fa0-9247-cc103fcf581c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_eabefdd4-c92a-4922-9e7d-57087f512410" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_33a07a93-35b6-4fa0-9247-cc103fcf581c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_eabefdd4-c92a-4922-9e7d-57087f512410" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_d2e55459-df1f-48a5-b8f5-36b1e49275ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_33a07a93-35b6-4fa0-9247-cc103fcf581c" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_d2e55459-df1f-48a5-b8f5-36b1e49275ab" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bd36102a-11e1-4115-8e43-a60095652c11" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_0a810eb4-fd0f-4804-ba18-75578d0935df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bd36102a-11e1-4115-8e43-a60095652c11" xlink:to="loc_us-gaap_OperatingIncomeLoss_0a810eb4-fd0f-4804-ba18-75578d0935df" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_8839260a-59a3-46f0-9a04-d28baf7690d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bd36102a-11e1-4115-8e43-a60095652c11" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_8839260a-59a3-46f0-9a04-d28baf7690d3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_92f788e2-c20b-48f5-93d4-ffeec90af4a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
<link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bd36102a-11e1-4115-8e43-a60095652c11" xlink:to="loc_us-gaap_InterestExpense_92f788e2-c20b-48f5-93d4-ffeec90af4a6" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_5f5d61f1-9ffc-49b8-959c-592f3a1f9c9b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3fc39253-69da-4fdb-9eda-e1afd303573e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_5f5d61f1-9ffc-49b8-959c-592f3a1f9c9b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3fc39253-69da-4fdb-9eda-e1afd303573e" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_ac097194-879a-4d71-81af-e4a5947e5fdc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfRevenue"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_5f5d61f1-9ffc-49b8-959c-592f3a1f9c9b" xlink:to="loc_us-gaap_CostOfRevenue_ac097194-879a-4d71-81af-e4a5947e5fdc" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="pdco-20210424.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e456b14c-5b01-4350-9428-7ee69ecf51cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_006500b8-1759-46bb-a416-f2d090df2f69" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e456b14c-5b01-4350-9428-7ee69ecf51cd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_006500b8-1759-46bb-a416-f2d090df2f69" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_e44281a5-589d-421c-b42f-faaf607478a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e456b14c-5b01-4350-9428-7ee69ecf51cd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_e44281a5-589d-421c-b42f-faaf607478a8" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ab241fd8-bd84-4933-899c-69ae90a7c5d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e456b14c-5b01-4350-9428-7ee69ecf51cd" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ab241fd8-bd84-4933-899c-69ae90a7c5d9" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ad6c28ca-f6a7-4f84-8737-1a545dc7b585" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_e456b14c-5b01-4350-9428-7ee69ecf51cd" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ad6c28ca-f6a7-4f84-8737-1a545dc7b585" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_10f2bbce-99ba-48a3-8bac-fe58823bb9d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividends"/>
<link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_PaymentsOfDividends_10f2bbce-99ba-48a3-8bac-fe58823bb9d5" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_651fbb4b-36af-40cb-995a-e68bd7cd0a32" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_651fbb4b-36af-40cb-995a-e68bd7cd0a32" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_e41ed2f3-3705-476b-b772-32b482436207" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
<link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_e41ed2f3-3705-476b-b772-32b482436207" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_a876ef1c-fa27-41e2-91ac-e18f5a339599" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
<link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_a876ef1c-fa27-41e2-91ac-e18f5a339599" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_c9467b40-6cbf-42a8-a1e5-3cf71865bbdc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_c9467b40-6cbf-42a8-a1e5-3cf71865bbdc" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_bdb4c9f9-e613-4d19-adf5-ba26f43db9cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5c0c2c55-cecd-431d-b55a-11953ffda7c2" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_bdb4c9f9-e613-4d19-adf5-ba26f43db9cf" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_214fff4b-2236-4895-9766-b3cb8af5b950" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_95fb3c98-cae6-4727-b5cd-18949f8929eb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_214fff4b-2236-4895-9766-b3cb8af5b950" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_95fb3c98-cae6-4727-b5cd-18949f8929eb" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_3506f152-b5d8-46ec-88f5-1048d385c776" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_214fff4b-2236-4895-9766-b3cb8af5b950" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_3506f152-b5d8-46ec-88f5-1048d385c776" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8b539d72-15c2-4f44-87ee-0425261e7479" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_214fff4b-2236-4895-9766-b3cb8af5b950" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8b539d72-15c2-4f44-87ee-0425261e7479" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_d24c91df-e993-4cb7-bcc9-06a92ed9de9c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Depreciation"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_Depreciation_d24c91df-e993-4cb7-bcc9-06a92ed9de9c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_fcc99dbc-f291-459d-ab26-f5b3e296b1db" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentForAmortization"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_AdjustmentForAmortization_fcc99dbc-f291-459d-ab26-f5b3e296b1db" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_a417310b-0eb9-4b5b-9004-94c05079a930" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_ProfitLoss_a417310b-0eb9-4b5b-9004-94c05079a930" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnInvestments_5164b095-65a1-42f8-bfed-5af6533c5def" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrealizedGainLossOnInvestments"/>
<link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_UnrealizedGainLossOnInvestments_5164b095-65a1-42f8-bfed-5af6533c5def" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_960846cf-5336-4f05-b7de-822a35d05a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_960846cf-5336-4f05-b7de-822a35d05a8d" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_c030d6ed-bf77-4865-9279-2f39019c5dee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_c030d6ed-bf77-4865-9279-2f39019c5dee" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_bf4bb0d0-8e64-42c4-ab53-cec727ee4472" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>
<link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_ShareBasedCompensation_bf4bb0d0-8e64-42c4-ab53-cec727ee4472" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_c051a4f0-f665-4340-9387-4f26e191e730" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
<link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_c051a4f0-f665-4340-9387-4f26e191e730" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_977bf019-1f20-4608-b418-fc7973c95051" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_977bf019-1f20-4608-b418-fc7973c95051" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_d196be60-2bcf-4df3-9170-84444d26c8ef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables"/>
<link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_d196be60-2bcf-4df3-9170-84444d26c8ef" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_9fa212a8-d064-47b4-83be-f37380af7963" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInInventories"/>
<link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_9fa212a8-d064-47b4-83be-f37380af7963" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d3409e70-d8a8-42a3-87a8-4e842b4ffb95" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
<link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_d3409e70-d8a8-42a3-87a8-4e842b4ffb95" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInLongTermReceivablesCurrent_c9bd4810-0a96-4646-ad02-229c5661dc74" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInLongTermReceivablesCurrent"/>
<link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInLongTermReceivablesCurrent_c9bd4810-0a96-4646-ad02-229c5661dc74" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_58640ef3-7d9c-48d1-bbe0-418d377b7e35" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
<link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_58640ef3-7d9c-48d1-bbe0-418d377b7e35" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_677f2d4c-2da5-4f88-b816-99a854991624" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
<link:calculationArc order="15" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_677f2d4c-2da5-4f88-b816-99a854991624" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_9ea78a67-2be5-487e-a3e8-415464f39302" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncashIncomeExpense"/>
<link:calculationArc order="16" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7b18b1e3-8475-4ad8-9bcf-cef15c5bd66f" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_9ea78a67-2be5-487e-a3e8-415464f39302" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/SummaryofSignificantAccountingPoliciesScheduleofOtherIncomeNetDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#SummaryofSignificantAccountingPoliciesScheduleofOtherIncomeNetDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/SummaryofSignificantAccountingPoliciesScheduleofOtherIncomeNetDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_8d013772-6342-41e0-ab05-71a2b580ffb8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_1230edd7-0f21-4913-851a-f79fee709072" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnInvestments"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_8d013772-6342-41e0-ab05-71a2b580ffb8" xlink:to="loc_us-gaap_GainLossOnInvestments_1230edd7-0f21-4913-851a-f79fee709072" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_dd2ed02c-523f-4913-8873-14cf5b47d553" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_8d013772-6342-41e0-ab05-71a2b580ffb8" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_dd2ed02c-523f-4913-8873-14cf5b47d553" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncome_a7677184-260d-4314-aafc-814087413bf2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncome"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_8d013772-6342-41e0-ab05-71a2b580ffb8" xlink:to="loc_us-gaap_OtherNonoperatingIncome_a7677184-260d-4314-aafc-814087413bf2" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/SummaryofSignificantAccountingPoliciesOtherNoncurrentAssetsDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#SummaryofSignificantAccountingPoliciesOtherNoncurrentAssetsDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/SummaryofSignificantAccountingPoliciesOtherNoncurrentAssetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_191438dd-2072-4646-97dd-deae2ff96d52" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_e63374a0-0deb-4039-a01e-4282127957b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_191438dd-2072-4646-97dd-deae2ff96d52" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_e63374a0-0deb-4039-a01e-4282127957b6" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers_7f6903f2-cb26-4276-915a-c1e89c79fd58" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_191438dd-2072-4646-97dd-deae2ff96d52" xlink:to="loc_us-gaap_CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers_7f6903f2-cb26-4276-915a-c1e89c79fd58" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_0229207c-42a2-4fa7-9c2f-bda0f7d79814" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Investments"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_191438dd-2072-4646-97dd-deae2ff96d52" xlink:to="loc_us-gaap_Investments_0229207c-42a2-4fa7-9c2f-bda0f7d79814" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/CashandCashEquivalentsDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#CashandCashEquivalentsDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/CashandCashEquivalentsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cd0188d5-5b1b-4faa-b7e3-05958d9bc406" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_b2bcbd4f-d218-4f12-b855-697acb904484" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Cash"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cd0188d5-5b1b-4faa-b7e3-05958d9bc406" xlink:to="loc_us-gaap_Cash_b2bcbd4f-d218-4f12-b855-697acb904484" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue_196c00bf-6c6d-4426-bc7a-dbf57fed4189" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsAtCarryingValue"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cd0188d5-5b1b-4faa-b7e3-05958d9bc406" xlink:to="loc_us-gaap_MoneyMarketFundsAtCarryingValue_196c00bf-6c6d-4426-bc7a-dbf57fed4189" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/GoodwillandOtherIntangibleAssetsBalancesofOtherIntangibleAssetsExcludingGoodwillDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#GoodwillandOtherIntangibleAssetsBalancesofOtherIntangibleAssetsExcludingGoodwillDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/GoodwillandOtherIntangibleAssetsBalancesofOtherIntangibleAssetsExcludingGoodwillDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c51d13c7-566d-469d-a385-08842b1f1c29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_95b84083-165b-4d0f-b265-e62da353606e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c51d13c7-566d-469d-a385-08842b1f1c29" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_95b84083-165b-4d0f-b265-e62da353606e" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9a591b21-59bc-4385-871e-9ff651a37794" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c51d13c7-566d-469d-a385-08842b1f1c29" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_9a591b21-59bc-4385-871e-9ff651a37794" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b8aba047-4e01-4337-93fd-d41f8acdf887" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_849b2acf-8949-4ed0-8013-827855f7a47a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b8aba047-4e01-4337-93fd-d41f8acdf887" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_849b2acf-8949-4ed0-8013-827855f7a47a" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_dc6743aa-9dc6-435a-a862-a2c418081285" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b8aba047-4e01-4337-93fd-d41f8acdf887" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_dc6743aa-9dc6-435a-a862-a2c418081285" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#PropertyandEquipmentScheduleofPropertyandEquipmentDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ca412f57-0fef-423c-9fac-dc33eb8a6817" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_accb1feb-716c-4319-8553-3eccba29c5c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ca412f57-0fef-423c-9fac-dc33eb8a6817" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_accb1feb-716c-4319-8553-3eccba29c5c0" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0c7803b8-cb02-4877-b640-c4eda16d5a14" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ca412f57-0fef-423c-9fac-dc33eb8a6817" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_0c7803b8-cb02-4877-b640-c4eda16d5a14" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Land_3dcf0578-d8e1-4a3c-8871-10aec1fec69f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Land"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_us-gaap_Land_3dcf0578-d8e1-4a3c-8871-10aec1fec69f" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_8cc41a24-ad9e-4b22-8097-653eac6f7b00" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingsAndImprovementsGross"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_us-gaap_BuildingsAndImprovementsGross_8cc41a24-ad9e-4b22-8097-653eac6f7b00" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsGross_04d491e7-da29-4dd1-a409-5e70494de673" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseholdImprovementsGross"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_us-gaap_LeaseholdImprovementsGross_04d491e7-da29-4dd1-a409-5e70494de673" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesGross_72446fd2-64a4-43a1-a9a2-9e128fdb2d06" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FurnitureAndFixturesGross"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_us-gaap_FurnitureAndFixturesGross_72446fd2-64a4-43a1-a9a2-9e128fdb2d06" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_ComputerHardwareAndSoftwareGross_0eb36b07-1f3e-4898-88e1-d138665b4cc7" xlink:href="pdco-20210424.xsd#pdco_ComputerHardwareAndSoftwareGross"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_pdco_ComputerHardwareAndSoftwareGross_0eb36b07-1f3e-4898-88e1-d138665b4cc7" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_ada59d98-5d77-435f-8bb6-1c6cb7e95a0d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConstructionInProgressGross"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_ce8a1e1b-0314-44f8-8565-ff8d16b68b65" xlink:to="loc_us-gaap_ConstructionInProgressGross_ada59d98-5d77-435f-8bb6-1c6cb7e95a0d" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/DebtLongTermDebtDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#DebtLongTermDebtDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/DebtLongTermDebtDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_ec8511c9-cad0-412d-bae5-27bbcffab616" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_631ce207-7ea8-4f14-bb3c-44d047ccdf6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_ec8511c9-cad0-412d-bae5-27bbcffab616" xlink:to="loc_us-gaap_LongTermDebtCurrent_631ce207-7ea8-4f14-bb3c-44d047ccdf6b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_47d4bf02-83f0-42d5-9686-85b74557445c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_ec8511c9-cad0-412d-bae5-27bbcffab616" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_47d4bf02-83f0-42d5-9686-85b74557445c" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/DebtScheduleofDebtMaturitiesDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#DebtScheduleofDebtMaturitiesDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/DebtScheduleofDebtMaturitiesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_dc551db0-4fe2-42ee-af19-75860e21dfc0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_dc551db0-4fe2-42ee-af19-75860e21dfc0" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_fd8c084b-c912-46cd-aa07-9f1130cea0a7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_fd8c084b-c912-46cd-aa07-9f1130cea0a7" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_179364c0-c6f2-40c6-9cce-da6c31d65f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_179364c0-c6f2-40c6-9cce-da6c31d65f3c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_75425a64-b724-4e6a-b5d7-790bb3f93149" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_75425a64-b724-4e6a-b5d7-790bb3f93149" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_b2baa6eb-e439-431b-9db8-f1c4d79c923c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_b2baa6eb-e439-431b-9db8-f1c4d79c923c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_b5be4385-3a27-4fc2-b957-196807d81453" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_29295fae-6235-43a4-8a9b-4f1b18e848be" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_b5be4385-3a27-4fc2-b957-196807d81453" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_6caed3ed-7463-4237-988c-ad0f664368ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_304cb3d4-a66f-4efb-b5ce-a586be6da620" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_6caed3ed-7463-4237-988c-ad0f664368ca" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_304cb3d4-a66f-4efb-b5ce-a586be6da620" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateDerivativeAssetsAtFairValue_132d96b9-6847-4746-add6-7f8b16b27095" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateDerivativeAssetsAtFairValue"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_6caed3ed-7463-4237-988c-ad0f664368ca" xlink:to="loc_us-gaap_InterestRateDerivativeAssetsAtFairValue_132d96b9-6847-4746-add6-7f8b16b27095" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredPurchasePriceReceivableCustomerFinancingFairValueDisclosure_8fb39970-fd54-449c-9b5d-1017e2317d39" xlink:href="pdco-20210424.xsd#pdco_DeferredPurchasePriceReceivableCustomerFinancingFairValueDisclosure"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_6caed3ed-7463-4237-988c-ad0f664368ca" xlink:to="loc_pdco_DeferredPurchasePriceReceivableCustomerFinancingFairValueDisclosure_8fb39970-fd54-449c-9b5d-1017e2317d39" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredPurchasePriceReceivableReceivablesSecuritizationProgramFairValueDisclosure_84b3eefc-e91e-4e2a-bb4b-2038e1e5dda5" xlink:href="pdco-20210424.xsd#pdco_DeferredPurchasePriceReceivableReceivablesSecuritizationProgramFairValueDisclosure"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_6caed3ed-7463-4237-988c-ad0f664368ca" xlink:to="loc_pdco_DeferredPurchasePriceReceivableReceivablesSecuritizationProgramFairValueDisclosure_84b3eefc-e91e-4e2a-bb4b-2038e1e5dda5" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/LeasesFutureMaturitiesofLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#LeasesFutureMaturitiesofLeaseLiabilitiesDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/LeasesFutureMaturitiesofLeaseLiabilitiesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_2fbe73ac-12cd-42f2-a4ab-44906bc5021c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_2fbe73ac-12cd-42f2-a4ab-44906bc5021c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_2288e878-6528-4692-a686-3bdca79500fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_2288e878-6528-4692-a686-3bdca79500fd" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_6b043b66-6532-4148-ae8f-55ffc07e0339" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_6b043b66-6532-4148-ae8f-55ffc07e0339" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b9a9450b-73c9-4527-897c-923575c06959" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b9a9450b-73c9-4527-897c-923575c06959" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_b223d0e6-718c-473e-b16b-ee754039b315" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_b223d0e6-718c-473e-b16b-ee754039b315" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_4f5eb402-2942-4663-8e6e-29a656c3a294" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ae85523-1f61-47d9-bb5f-b638fa962214" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_4f5eb402-2942-4663-8e6e-29a656c3a294" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/LeasesFutureMaturitiesofLeaseLiabilitiesDetails_1" xlink:type="simple" xlink:href="pdco-20210424.xsd#LeasesFutureMaturitiesofLeaseLiabilitiesDetails_1"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/LeasesFutureMaturitiesofLeaseLiabilitiesDetails_1" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_4414d7c0-8459-4f28-80d6-21e63ea1b782" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_2de5a245-6bc8-4d3d-89f1-e73109d2e138" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_4414d7c0-8459-4f28-80d6-21e63ea1b782" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_2de5a245-6bc8-4d3d-89f1-e73109d2e138" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_010a9610-eb9c-43a1-bb55-ce48c70d3e76" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_4414d7c0-8459-4f28-80d6-21e63ea1b782" xlink:to="loc_us-gaap_OperatingLeaseLiability_010a9610-eb9c-43a1-bb55-ce48c70d3e76" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/IncomeTaxesIncomeFromContinuingOperationsBeforeTaxesDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#IncomeTaxesIncomeFromContinuingOperationsBeforeTaxesDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/IncomeTaxesIncomeFromContinuingOperationsBeforeTaxesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7e8d9689-899e-429d-8d3c-615204551cbf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_059e03de-c3ee-4d5e-a7b4-9940a6aaa52f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7e8d9689-899e-429d-8d3c-615204551cbf" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_059e03de-c3ee-4d5e-a7b4-9940a6aaa52f" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_76ab2dbd-6341-478b-8f51-d1cd6d250262" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7e8d9689-899e-429d-8d3c-615204551cbf" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_76ab2dbd-6341-478b-8f51-d1cd6d250262" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/IncomeTaxesComponentsofProvisionforIncomeTaxesDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#IncomeTaxesComponentsofProvisionforIncomeTaxesDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/IncomeTaxesComponentsofProvisionforIncomeTaxesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5bc750bc-0aae-45a2-9fd8-ce56bbb5fa94" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_31903b35-a6a0-4841-8391-3559255cb520" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5bc750bc-0aae-45a2-9fd8-ce56bbb5fa94" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_31903b35-a6a0-4841-8391-3559255cb520" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_6cd3b940-ee5f-4d27-bd55-a1ba484315a5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5bc750bc-0aae-45a2-9fd8-ce56bbb5fa94" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_6cd3b940-ee5f-4d27-bd55-a1ba484315a5" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_56dca297-04f1-4f85-b9a6-26ffd82989a2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5bc750bc-0aae-45a2-9fd8-ce56bbb5fa94" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_56dca297-04f1-4f85-b9a6-26ffd82989a2" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_9e9a14c5-ee71-4afb-ae8e-1f476ed3f1f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_9f33ce91-f3e8-4c54-bf3d-0f3c4e2654a3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_9e9a14c5-ee71-4afb-ae8e-1f476ed3f1f1" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_9f33ce91-f3e8-4c54-bf3d-0f3c4e2654a3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_688fd68c-5da2-447c-9b05-53911ba2b1bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_9e9a14c5-ee71-4afb-ae8e-1f476ed3f1f1" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_688fd68c-5da2-447c-9b05-53911ba2b1bc" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e7ac51f3-1add-4478-ae4f-11587d030e53" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_ab36a33d-856e-4afd-a095-499fb6a0fb41" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e7ac51f3-1add-4478-ae4f-11587d030e53" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_ab36a33d-856e-4afd-a095-499fb6a0fb41" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_616a3eb6-644b-4351-8579-1c51b117ced6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e7ac51f3-1add-4478-ae4f-11587d030e53" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_616a3eb6-644b-4351-8579-1c51b117ced6" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_17d5ae06-6e38-46fd-8825-c9ff0697ab55" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_e7ac51f3-1add-4478-ae4f-11587d030e53" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_17d5ae06-6e38-46fd-8825-c9ff0697ab55" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/IncomeTaxesComponentsofDeferredTaxAssetsLiabilitiesDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#IncomeTaxesComponentsofDeferredTaxAssetsLiabilitiesDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/IncomeTaxesComponentsofDeferredTaxAssetsLiabilitiesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGross"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredCurrentIncomeTaxAssetLiabilityCapitalAccumulationPlan_2a1c8e57-cbbb-4ef2-920b-2b94bcd37fef" xlink:href="pdco-20210424.xsd#pdco_DeferredCurrentIncomeTaxAssetLiabilityCapitalAccumulationPlan"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_pdco_DeferredCurrentIncomeTaxAssetLiabilityCapitalAccumulationPlan_2a1c8e57-cbbb-4ef2-920b-2b94bcd37fef" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInventory_5be04cff-1405-422c-a4a6-44be86fdac36" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsInventory"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsInventory_5be04cff-1405-422c-a4a6-44be86fdac36" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_04fc456c-a652-46b5-80e6-a70638323dd0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts_04fc456c-a652-46b5-80e6-a70638323dd0" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_ca033475-6e40-42e4-ad41-fcd0efa02368" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_ca033475-6e40-42e4-ad41-fcd0efa02368" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_878ae368-b490-40cd-a47c-3aec4657d68b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsDerivativeInstruments"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_878ae368-b490-40cd-a47c-3aec4657d68b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_744ed016-1214-4991-8753-a3dc70cb91f3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_744ed016-1214-4991-8753-a3dc70cb91f3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredTaxAssetLeaseLiability_7e3a1d6e-b244-4efb-a1b4-f027e3c5e652" xlink:href="pdco-20210424.xsd#pdco_DeferredTaxAssetLeaseLiability"/>
<link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_pdco_DeferredTaxAssetLeaseLiability_7e3a1d6e-b244-4efb-a1b4-f027e3c5e652" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_188d906e-5255-4b67-ade0-8af102a3a8f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOther"/>
<link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_c746c94e-9d48-4c45-ac3c-01204140ac55" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_188d906e-5255-4b67-ade0-8af102a3a8f5" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_d92a2724-c752-4de5-9b60-c50a837f6548" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilities"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_eb74f11a-abcd-4ace-92fb-f0896c09064d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_d92a2724-c752-4de5-9b60-c50a837f6548" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_eb74f11a-abcd-4ace-92fb-f0896c09064d" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_8cb46380-f31f-4bed-a1ec-869cae909caf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_d92a2724-c752-4de5-9b60-c50a837f6548" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_8cb46380-f31f-4bed-a1ec-869cae909caf" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_b56b8b8e-ad8e-4952-9668-86ed9a091574" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_f4865b54-aa78-4ace-ad40-438f83a4966c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGross"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_b56b8b8e-ad8e-4952-9668-86ed9a091574" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_f4865b54-aa78-4ace-ad40-438f83a4966c" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b8440aa2-0e94-4a52-beb0-855037711be9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
<link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_b56b8b8e-ad8e-4952-9668-86ed9a091574" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b8440aa2-0e94-4a52-beb0-855037711be9" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredCurrentIncomeTaxLiabilityLastInFirstOutReserve_98784cd7-ba51-4601-9e67-b4b63663d383" xlink:href="pdco-20210424.xsd#pdco_DeferredCurrentIncomeTaxLiabilityLastInFirstOutReserve"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:to="loc_pdco_DeferredCurrentIncomeTaxLiabilityLastInFirstOutReserve_98784cd7-ba51-4601-9e67-b4b63663d383" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_4283a76f-aea1-487d-9353-ceef3673b376" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_4283a76f-aea1-487d-9353-ceef3673b376" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_103389c3-082b-4857-ac79-c3eefa1ba281" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_103389c3-082b-4857-ac79-c3eefa1ba281" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_3b021ef5-d52c-4dd3-a28c-1265de3ceae3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_3b021ef5-d52c-4dd3-a28c-1265de3ceae3" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_DeferredTaxLiabilityOperatingLeaseRightOfUseAsset_db6ae7df-0885-4846-81ea-a979248cabd2" xlink:href="pdco-20210424.xsd#pdco_DeferredTaxLiabilityOperatingLeaseRightOfUseAsset"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_43e1af23-54cb-4a4c-a041-106d670f4ffe" xlink:to="loc_pdco_DeferredTaxLiabilityOperatingLeaseRightOfUseAsset_db6ae7df-0885-4846-81ea-a979248cabd2" xlink:type="arc"/>
</link:calculationLink>
<link:roleRef roleURI="http://www.pattersoncompanies.com/role/IncomeTaxesSummaryofEffectiveIncomeTaxExpenseReconciliationDetails" xlink:type="simple" xlink:href="pdco-20210424.xsd#IncomeTaxesSummaryofEffectiveIncomeTaxExpenseReconciliationDetails"/>
<link:calculationLink xlink:role="http://www.pattersoncompanies.com/role/IncomeTaxesSummaryofEffectiveIncomeTaxExpenseReconciliationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_e015049a-68aa-45c5-a669-fe5a36b962ac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
<link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_e015049a-68aa-45c5-a669-fe5a36b962ac" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_7b6dc976-509e-4fbb-9945-bf58e5c9be15" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
<link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_7b6dc976-509e-4fbb-9945-bf58e5c9be15" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_31ab1f34-0226-41f5-9344-deef69d9423b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
<link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_31ab1f34-0226-41f5-9344-deef69d9423b" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses_cafe9f5f-e53e-4141-9046-1acebe0f2686" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses"/>
<link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses_cafe9f5f-e53e-4141-9046-1acebe0f2686" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_pdco_EffectiveIncomeTaxRateReconciliationLegalSettlement_88258f41-f91b-4ab1-baae-270f03e28acb" xlink:href="pdco-20210424.xsd#pdco_EffectiveIncomeTaxRateReconciliationLegalSettlement"/>
<link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_pdco_EffectiveIncomeTaxRateReconciliationLegalSettlement_88258f41-f91b-4ab1-baae-270f03e28acb" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_8ff6e5f5-3f71-4374-92a9-42963d053d3e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions"/>
<link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_8ff6e5f5-3f71-4374-92a9-42963d053d3e" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems_871c68de-0f7a-4ece-8b48-be44bf111cd6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems"/>
<link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems_871c68de-0f7a-4ece-8b48-be44bf111cd6" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_81067fc5-4ed9-44ee-a448-e7fed9e94983" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate"/>
<link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_81067fc5-4ed9-44ee-a448-e7fed9e94983" xlink:type="arc"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends_75200860-5803-4036-aa28-9272e07390c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends"/>
<link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_0c907951-82ab-4e2c-944e-210990147b2f" xlink:to="loc_us-gaap_IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends_75200860-5803-4036-aa28-9272e07390c1" xlink:type="arc"/>
</link:calculationLink>
</link:linkbase>

6 Subsequent Filings that Reference this Filing

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

 6/21/23  Patterson Companies, Inc.         10-K        4/29/23  108:11M
12/15/22  Patterson Companies, Inc.         8-K:5,9    12/13/22   12:265K                                   Donnelley … Solutions/FA
12/01/22  Patterson Companies, Inc.         10-Q       10/29/22   61:6.3M
10/13/22  Patterson Companies, Inc.         8-K:5,8,9  10/12/22   12:299K                                   Donnelley … Solutions/FA
 6/29/22  Patterson Companies, Inc.         10-K        4/30/22  109:11M
12/01/21  Patterson Companies, Inc.         S-8        12/01/21    3:65K                                    Donnelley … Solutions/FA

23 Previous Filings that this Filing References

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

 3/03/21  Patterson Companies, Inc.         10-Q        1/23/21   62:6.2M
 2/16/21  Patterson Companies, Inc.         8-K:1,2,9   2/16/21   11:1.1M                                   Donnelley … Solutions/FA
 9/03/20  Patterson Companies, Inc.         10-Q        7/25/20   59:8.4M
 6/24/20  Patterson Companies, Inc.         10-K        4/25/20  112:19M
 4/20/20  Patterson Companies, Inc.         8-K:5,9     4/17/20   11:151K                                   Donnelley … Solutions/FA
 1/17/20  Patterson Companies, Inc.         8-K:1,2,8,9 1/15/20   12:1.1M                                   Donnelley … Solutions/FA
12/23/19  Patterson Companies, Inc.         8-K:2,9    12/20/19   11:920K                                   Donnelley … Solutions/FA
 8/02/19  Patterson Companies, Inc.         DEF 14A     9/16/19    1:6.3M                                   Broadridge Fin’l So… Inc
 6/26/19  Patterson Companies, Inc.         10-K        4/27/19  105:20M
 3/06/19  Patterson Companies, Inc.         10-Q        1/26/19   60:19M
 8/06/18  Patterson Companies, Inc.         DEF 14A     9/17/18    1:7.3M                                   Broadridge Fin’l So… Inc
 7/25/18  Patterson Companies, Inc.         8-K:1,2,9   7/24/18    3:837K                                   Donnelley … Solutions/FA
 6/27/18  Patterson Companies, Inc.         10-K        4/28/18  101:10M
 6/12/18  Patterson Companies, Inc.         8-K:5,9     6/11/18    4:184K                                   Donnelley … Solutions/FA
 5/23/18  Patterson Companies, Inc.         8-K:5,7,9   5/23/18    6:232K                                   Donnelley … Solutions/FA
10/24/17  Patterson Companies, Inc.         8-K:5,7,9  10/23/17    4:144K                                   Donnelley … Solutions/FA
 6/24/15  Patterson Companies, Inc.         10-K        4/25/15  103:7.6M                                   Donnelley … Solutions/FA
 8/05/14  Patterson Companies, Inc.         DEF 14A     9/08/14    1:825K                                   Donnelley … Solutions/FA
12/13/13  Patterson Companies, Inc.         8-K:5,9    12/10/13    2:78K                                    Donnelley … Solutions/FA
 8/07/12  Patterson Companies, Inc.         DEF 14A     9/10/12    1:936K                                   Donnelley … Solutions/FA
 7/28/08  Patterson Companies, Inc.         DEF 14A     9/08/08    1:547K                                   Donnelley … Solutions/FA
 9/09/04  Patterson Companies, Inc.         10-Q        7/31/04    8:273K                                   Donnelley … Solutions/FA
 7/25/02  Patterson Companies, Inc.         10-K        4/27/02   10:788K                                   Donnelley … Solutions/FA
↑Top
Filing Submission 0000891024-21-000006   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Mon., May 13, 8:38:21.3am ET