SEC Info - Apogee Enterprises, Inc. - ‘10-Q’ for 5/29/21

SEC Info℠

Home

My Interests

Help

Please Sign In

Apogee Enterprises, Inc. – ‘10-Q’ for 5/29/21 – ‘EX-101.DEF’

On: Thursday, 7/1/21, at 3:18pm ET · For: 5/29/21 · Accession #: 6845-21-20 · File #: 0-06365

Previous ‘10-Q’: ‘10-Q’ on 1/7/21 for 11/28/20 · Next: ‘10-Q’ on 9/30/21 for 8/28/21 · Latest: ‘10-Q’ on 1/3/24 for 11/25/23 · 17 References:

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

 7/01/21  Apogee Enterprises, Inc.          10-Q        5/29/21   79:6.4M

Quarterly Report — Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    623K 
 2: EX-3.3      Articles of Incorporation/Organization or Bylaws    HTML     57K 
 3: EX-4.1      Instrument Defining the Rights of Security Holders  HTML     19K 
 4: EX-10.1     Material Contract                                   HTML     36K 
 5: EX-31.1     Certification -- §302 - SOA'02                      HTML     25K 
 6: EX-31.2     Certification -- §302 - SOA'02                      HTML     25K 
 7: EX-32.1     Certification -- §906 - SOA'02                      HTML     22K 
 8: EX-32.2     Certification -- §906 - SOA'02                      HTML     22K 
15: R1          Cover Page                                          HTML     74K 
16: R2          Consolidated Balance Sheets (Unaudited)             HTML    130K 
17: R3          Consolidated Results of Operations (Unaudited)      HTML     89K 
18: R4          Consolidated Statements of Comprehensive Earnings   HTML     56K 
                (Unaudited)                                                      
19: R5          Consolidated Statements of Cash Flows (Unaudited)   HTML    107K 
20: R6          Consolidated Statement of Shareholders Equity       HTML     97K 
                (Unaudited)                                                      
21: R7          Income Taxes                                        HTML     26K 
22: R8          Income Taxes (Textual)                              HTML     22K 
23: R9          Summary of Significant Accounting Policies          HTML     28K 
24: R10         Revenue, Receivables and Contract Assets and        HTML     67K 
                Liabilities                                                      
25: R11         Supplemental Balance Sheet Information              HTML     48K 
26: R12         Financial Instruments                               HTML     73K 
27: R13         Goodwill and Other Identifiable Intangible Assets   HTML     92K 
28: R14         Debt                                                HTML     29K 
29: R15         Leases Leases                                       HTML     49K 
30: R16         Commitments and Contingent Liabilities              HTML     49K 
31: R17         Share-Based Compensation                            HTML     45K 
32: R18         Earnings per Share                                  HTML     31K 
33: R19         Segment Information                                 HTML     50K 
34: R20         Summary of Significant Accounting Policies          HTML     29K 
                (Tables)                                                         
35: R21         Revenue, Receivables and Contract Assets and        HTML     64K 
                Liabilities (Tables)                                             
36: R22         Supplemental Balance Sheet Information (Tables)     HTML     53K 
37: R23         Financial Instruments (Tables)                      HTML     71K 
38: R24         Goodwill and Other Identifiable Intangible Assets   HTML     93K 
                (Tables)                                                         
39: R25         Leases (Tables)                                     HTML     49K 
40: R26         Commitments and Contingent Liabilities (Tables)     HTML     31K 
41: R27         Share-Based Compensation (Tables)                   HTML     44K 
42: R28         Earnings per Share (Tables)                         HTML     31K 
43: R29         Segment Information (Tables)                        HTML     43K 
44: R30         Summary of Significant Accounting Policies          HTML     30K 
                (Details Textual)                                                
45: R31         Revenue, Receivables and Contract Assets and        HTML     31K 
                Liabilities Revenue (Details)                                    
46: R32         Revenue, Receivables and Contract Assets and        HTML     36K 
                Liabilities Accounts Receivable (Details)                        
47: R33         Revenue, Receivables and Contract Assets and        HTML     31K 
                Liabilities Allowance for Credit Losses (Details)                
48: R34         Revenue, Receivables and Contract Assets and        HTML     26K 
                Liabilities Contract Assets & Liabilities                        
                (Details)                                                        
49: R35         Revenue, Receivables and Contract Assets and        HTML     25K 
                Liabilities (Details 4)                                          
50: R36         Revenue, Receivables and Contract Assets and        HTML     33K 
                Liabilities (Details 5)                                          
51: R37         Revenue, Receivables and Contract Assets and        HTML     23K 
                Liabilities (Details Textual)                                    
52: R38         Supplemental Balance Sheet Information -            HTML     31K 
                Components of inventories (Details)                              
53: R39         Supplemental Balance Sheet Information - Other      HTML     36K 
                current liabilities (Details)                                    
54: R40         Supplemental Balance Sheet Information - Other      HTML     38K 
                non-current liabilities (Details)                                
55: R41         Financial Instruments (Details)                     HTML     33K 
56: R42         Financial Instruments (Details 2)                   HTML     48K 
57: R43         Financial Instruments (Details 3)                   HTML     46K 
58: R44         Financial Instruments (Details Textual)             HTML     30K 
59: R45         Goodwill and Other Identifiable Intangible Assets   HTML     48K 
                (Details)                                                        
60: R46         Goodwill and Other Identifiable Intangible Assets   HTML     56K 
                (Details 1)                                                      
61: R47         Goodwill and Other Identifiable Intangible Assets   HTML     32K 
                (Details 2)                                                      
62: R48         Goodwill and Other Identifiable Intangible Assets   HTML     30K 
                (Details Textual)                                                
63: R49         Debt (Details)                                      HTML     45K 
64: R50         Leases (Details)                                    HTML     30K 
65: R51         Leases (Details 1)                                  HTML     30K 
66: R52         Leases (Details 2)                                  HTML     42K 
67: R53         Commitments and Contingent Liabilities (Details 1)  HTML     28K 
68: R54         Commitments and Contingent Liabilities (Details 2)  HTML     34K 
69: R55         Commitments and Contingent Liabilities (Details     HTML     31K 
                Textual)                                                         
70: R56         Share-Based Compensation (Details 1)                HTML     57K 
71: R57         Share-Based Compensation (Details 2)                HTML     39K 
72: R58         Share-Based Compensation (Details Textual)          HTML     40K 
73: R59         Earnings per Share Earnings per Share (Details)     HTML     32K 
74: R60         Segment Information Segment Information (Details    HTML     23K 
                Textual)                                                         
75: R61         Segment Information (Details)                       HTML     43K 
77: XML         IDEA XML File -- Filing Summary                      XML    138K 
14: XML         XBRL Instance -- apog-20210529_htm                   XML   1.36M 
76: EXCEL       IDEA Workbook of Financial Reports                  XLSX     75K 
10: EX-101.CAL  XBRL Calculations -- apog-20210529_cal               XML    163K 
11: EX-101.DEF  XBRL Definitions -- apog-20210529_def                XML    303K 
12: EX-101.LAB  XBRL Labels -- apog-20210529_lab                     XML   1.29M 
13: EX-101.PRE  XBRL Presentations -- apog-20210529_pre              XML    703K 
 9: EX-101.SCH  XBRL Schema -- apog-20210529                         XSD    123K 
78: JSON        XBRL Instance as JSON Data -- MetaLinks              338±   483K 
79: ZIP         XBRL Zipped Folder -- 0000006845-21-000020-xbrl      Zip    216K

‘EX-101.DEF’ — XBRL Definitions — apog-20210529_def

This Exhibit is an XBRL XML File.

<?xml version="1.0" encoding="windows-1252"?>

<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>

<link:roleRef roleURI="http://www.apog.com/role/ConsolidatedStatementofShareholdersEquityunaudited" xlink:type="simple" xlink:href="apog-20210529.xsd#ConsolidatedStatementofShareholdersEquityunaudited"/>

<link:definitionLink xlink:role="http://www.apog.com/role/ConsolidatedStatementofShareholdersEquityunaudited" xlink:type="extended" id="i49dc77f40dc34d33a1dfbe9df9ecb82d_ConsolidatedStatementofShareholdersEquityunaudited">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_9080c84a-51cb-422a-b763-09ad90d5a4a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9080c84a-51cb-422a-b763-09ad90d5a4a0" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_54a49c02-d3d9-4a12-adc3-c9ee659ec257" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesOutstanding"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_SharesOutstanding_54a49c02-d3d9-4a12-adc3-c9ee659ec257" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c524148e-d38b-4e64-9a18-f72052534be5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockholdersEquity_c524148e-d38b-4e64-9a18-f72052534be5" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_50f39ded-2404-45b3-9987-07ffbfb6a271" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_NetIncomeLoss_50f39ded-2404-45b3-9987-07ffbfb6a271" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_3446b0fa-5048-4a22-9554-f40c6adac7d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_3446b0fa-5048-4a22-9554-f40c6adac7d1" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_68129a49-e4de-482e-8b88-c6e0b9c43f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_68129a49-e4de-482e-8b88-c6e0b9c43f8a" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax_fc08895c-d92a-40c0-9a8c-3c07d582077b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax_fc08895c-d92a-40c0-9a8c-3c07d582077b" xlink:type="arc" order="6"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax_a57b713b-1098-4b78-b17c-58037c85b3af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax_a57b713b-1098-4b78-b17c-58037c85b3af" xlink:type="arc" order="7"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_c7d9e557-9496-4f80-8f03-ac699c432145" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_c7d9e557-9496-4f80-8f03-ac699c432145" xlink:type="arc" order="8"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_47a3f667-f96e-4fb0-a0f0-a13263687b82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_47a3f667-f96e-4fb0-a0f0-a13263687b82" xlink:type="arc" order="9"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_5f6db01f-1c32-48dd-bbfb-34335548cef3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_5f6db01f-1c32-48dd-bbfb-34335548cef3" xlink:type="arc" order="10"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_814eb554-02c9-41eb-a26c-f24279e9729d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_814eb554-02c9-41eb-a26c-f24279e9729d" xlink:type="arc" order="11"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_6df66959-4066-4168-a4c8-231b836e136e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_6df66959-4066-4168-a4c8-231b836e136e" xlink:type="arc" order="12"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_3837ffec-1df5-4963-bc80-afbed869ed63" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_3837ffec-1df5-4963-bc80-afbed869ed63" xlink:type="arc" order="13"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_c2a526b3-d490-4c0e-ad67-efcee6954f8e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_c2a526b3-d490-4c0e-ad67-efcee6954f8e" xlink:type="arc" order="14"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_49f5f17d-3717-45f4-a37f-c5dd2edc68e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_49f5f17d-3717-45f4-a37f-c5dd2edc68e3" xlink:type="arc" order="15"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_99b78b1e-31bd-4f8c-beda-b98fa186deb9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodShares"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_99b78b1e-31bd-4f8c-beda-b98fa186deb9" xlink:type="arc" order="16"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_c0b5c49a-b415-4991-88b9-26ba0c9156bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_c0b5c49a-b415-4991-88b9-26ba0c9156bf" xlink:type="arc" order="17"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_c99b0520-259e-47a0-a5c8-66f286e83a70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsCommonStockCash"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_cbd13a12-55f9-45d3-b69f-96140fc31e42" xlink:to="loc_us-gaap_DividendsCommonStockCash_c99b0520-259e-47a0-a5c8-66f286e83a70" xlink:type="arc" order="18"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_6df5bfb8-905d-4cf1-87b0-4cd3a45b63dd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesOutstanding"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_66a422f7-079c-4fac-94d7-af9f36c1dd76" 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_StatementTable_e97a5c98-f329-494e-9bc9-0eddedddc3aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9080c84a-51cb-422a-b763-09ad90d5a4a0" xlink:to="loc_us-gaap_StatementTable_e97a5c98-f329-494e-9bc9-0eddedddc3aa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_e97a5c98-f329-494e-9bc9-0eddedddc3aa" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1" xlink:to="loc_us-gaap_EquityComponentDomain_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_49271e74-fcb1-4ebd-bcaf-f0ee3e5c6fc1" xlink:to="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_3628b850-56a8-4355-8747-6d8f8055d0be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_us-gaap_CommonStockMember_3628b850-56a8-4355-8747-6d8f8055d0be" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_0c2bc723-1f51-45c6-8b57-2b5fb5ccdc02" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_0c2bc723-1f51-45c6-8b57-2b5fb5ccdc02" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_d76cead0-7530-424d-b370-e2d674ea9c00" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_us-gaap_RetainedEarningsMember_d76cead0-7530-424d-b370-e2d674ea9c00" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_CommonStockHeldInTrustMember_27135fd9-2230-40e4-886f-1a3c15b19077" xlink:href="apog-20210529.xsd#apog_CommonStockHeldInTrustMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_apog_CommonStockHeldInTrustMember_27135fd9-2230-40e4-886f-1a3c15b19077" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_DeferredCompensationObligationMember_e8fc7cd5-b015-4a3c-8f7e-27751c5490bd" xlink:href="apog-20210529.xsd#apog_DeferredCompensationObligationMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_apog_DeferredCompensationObligationMember_e8fc7cd5-b015-4a3c-8f7e-27751c5490bd" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_d478db53-749a-4734-b152-83293ee2af0d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_a79090c3-22cf-4189-85b2-91f1caa1b1ad" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_d478db53-749a-4734-b152-83293ee2af0d" xlink:type="arc" order="5"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/SummaryofSignificantAccountingPoliciesDetailsTextual" xlink:type="simple" xlink:href="apog-20210529.xsd#SummaryofSignificantAccountingPoliciesDetailsTextual"/>

<link:definitionLink xlink:role="http://www.apog.com/role/SummaryofSignificantAccountingPoliciesDetailsTextual" xlink:type="extended" id="i2e8ef72181e54e0ca24c826a3f8d3ea1_SummaryofSignificantAccountingPoliciesDetailsTextual">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_e3c85d38-5728-4215-9602-83c9f8e44bd6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_f68ced92-ccef-47ab-b84f-6e1426995f41" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_e3c85d38-5728-4215-9602-83c9f8e44bd6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_f68ced92-ccef-47ab-b84f-6e1426995f41" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_24dc46c2-7a48-465a-8a8c-015fc40768ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_e3c85d38-5728-4215-9602-83c9f8e44bd6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_24dc46c2-7a48-465a-8a8c-015fc40768ab" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_a9fdd592-d0d7-4b00-b5ac-89d0c3d67855" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_e3c85d38-5728-4215-9602-83c9f8e44bd6" xlink:to="loc_us-gaap_SubsequentEventTable_a9fdd592-d0d7-4b00-b5ac-89d0c3d67855" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_093c40d3-cae0-44a5-a825-c0281759145f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_a9fdd592-d0d7-4b00-b5ac-89d0c3d67855" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_093c40d3-cae0-44a5-a825-c0281759145f" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_093c40d3-cae0-44a5-a825-c0281759145f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_093c40d3-cae0-44a5-a825-c0281759145f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_093c40d3-cae0-44a5-a825-c0281759145f_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4fe8b0ad-8dd0-410d-9e32-8c6c41f7ba50" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_093c40d3-cae0-44a5-a825-c0281759145f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4fe8b0ad-8dd0-410d-9e32-8c6c41f7ba50" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_a9beb757-9431-41eb-9d63-491dc2682e07" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_4fe8b0ad-8dd0-410d-9e32-8c6c41f7ba50" xlink:to="loc_us-gaap_SubsequentEventMember_a9beb757-9431-41eb-9d63-491dc2682e07" xlink:type="arc" order="0"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesRevenueDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#RevenueReceivablesandContractAssetsandLiabilitiesRevenueDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesRevenueDetails" xlink:type="extended" id="i18756e654d024be28b0f5a0bb79b2809_RevenueReceivablesandContractAssetsandLiabilitiesRevenueDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_bca731f6-f9c7-4e2e-994e-686169970733" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c4092418-ab66-4b1c-967c-947fbaa4e52c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_bca731f6-f9c7-4e2e-994e-686169970733" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c4092418-ab66-4b1c-967c-947fbaa4e52c" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_0aa7b8cc-7b2e-460d-af23-61d926b7058e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_bca731f6-f9c7-4e2e-994e-686169970733" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_0aa7b8cc-7b2e-460d-af23-61d926b7058e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_b8707057-e919-4563-a0c5-5d3dd9caed87" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_0aa7b8cc-7b2e-460d-af23-61d926b7058e" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_b8707057-e919-4563-a0c5-5d3dd9caed87" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_b8707057-e919-4563-a0c5-5d3dd9caed87_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_b8707057-e919-4563-a0c5-5d3dd9caed87" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_b8707057-e919-4563-a0c5-5d3dd9caed87_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_60d7d8cd-c0f2-40c0-b61e-b08727ede67f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_b8707057-e919-4563-a0c5-5d3dd9caed87" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_60d7d8cd-c0f2-40c0-b61e-b08727ede67f" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredAtPointInTimeMember_fa3eeac7-4e48-439e-a69e-5ec5ee9fda8c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransferredAtPointInTimeMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_60d7d8cd-c0f2-40c0-b61e-b08727ede67f" xlink:to="loc_us-gaap_TransferredAtPointInTimeMember_fa3eeac7-4e48-439e-a69e-5ec5ee9fda8c" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredOverTimeMember_9a97bc4a-f202-41f7-815d-d074362d5998" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransferredOverTimeMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_60d7d8cd-c0f2-40c0-b61e-b08727ede67f" xlink:to="loc_us-gaap_TransferredOverTimeMember_9a97bc4a-f202-41f7-815d-d074362d5998" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesAccountsReceivableDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#RevenueReceivablesandContractAssetsandLiabilitiesAccountsReceivableDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesAccountsReceivableDetails" xlink:type="extended" id="i42f33fac513f48d596f466e7136a355c_RevenueReceivablesandContractAssetsandLiabilitiesAccountsReceivableDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_6fa1e6b5-d139-4e15-8092-249627ad2464" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGross_3be007d2-dd66-4b39-959c-9dd48db0d3ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableGross"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_6fa1e6b5-d139-4e15-8092-249627ad2464" xlink:to="loc_us-gaap_AccountsReceivableGross_3be007d2-dd66-4b39-959c-9dd48db0d3ab" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_6990b419-53c0-429f-9200-6e443f622ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_6fa1e6b5-d139-4e15-8092-249627ad2464" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_6990b419-53c0-429f-9200-6e443f622ac4" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_d2097621-88ef-4765-a19c-515161a0875d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNet"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_6fa1e6b5-d139-4e15-8092-249627ad2464" xlink:to="loc_us-gaap_AccountsReceivableNet_d2097621-88ef-4765-a19c-515161a0875d" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_9fcf49e6-4d29-475a-8606-31a59d7cc15b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_6fa1e6b5-d139-4e15-8092-249627ad2464" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_9fcf49e6-4d29-475a-8606-31a59d7cc15b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_691cefb5-c1d9-4e17-a581-9374d29fac7d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_9fcf49e6-4d29-475a-8606-31a59d7cc15b" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_691cefb5-c1d9-4e17-a581-9374d29fac7d" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_691cefb5-c1d9-4e17-a581-9374d29fac7d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivableTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_691cefb5-c1d9-4e17-a581-9374d29fac7d" xlink:to="loc_us-gaap_ReceivableTypeDomain_691cefb5-c1d9-4e17-a581-9374d29fac7d_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_e6b4e729-41ff-42e7-beff-c19afeb90725" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivableTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_691cefb5-c1d9-4e17-a581-9374d29fac7d" xlink:to="loc_us-gaap_ReceivableTypeDomain_e6b4e729-41ff-42e7-beff-c19afeb90725" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_e58fa6fc-9f9b-46ac-bb21-35ceee20664b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TradeAccountsReceivableMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_e6b4e729-41ff-42e7-beff-c19afeb90725" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_e58fa6fc-9f9b-46ac-bb21-35ceee20664b" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_AccountsReceivableConstructionContractsMember_66f2c7d2-7d63-41c7-830f-d2b722b34b12" xlink:href="apog-20210529.xsd#apog_AccountsReceivableConstructionContractsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_e6b4e729-41ff-42e7-beff-c19afeb90725" xlink:to="loc_apog_AccountsReceivableConstructionContractsMember_66f2c7d2-7d63-41c7-830f-d2b722b34b12" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_AccountsReceivableContractRetainageMember_9f932103-0644-45c2-adf6-d9608e1ad277" xlink:href="apog-20210529.xsd#apog_AccountsReceivableContractRetainageMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_e6b4e729-41ff-42e7-beff-c19afeb90725" xlink:to="loc_apog_AccountsReceivableContractRetainageMember_9f932103-0644-45c2-adf6-d9608e1ad277" xlink:type="arc" order="2"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesDetails5" xlink:type="simple" xlink:href="apog-20210529.xsd#RevenueReceivablesandContractAssetsandLiabilitiesDetails5"/>

<link:definitionLink xlink:role="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesDetails5" xlink:type="extended" id="ib8db2d910d35479aafa3bfd2af571768_RevenueReceivablesandContractAssetsandLiabilitiesDetails5">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ab69d362-2a65-460a-8fc1-296617ed947d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_f8786309-0000-4b4f-83f2-8f3a8e910b55" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ab69d362-2a65-460a-8fc1-296617ed947d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_f8786309-0000-4b4f-83f2-8f3a8e910b55" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_cdbad16f-a880-4fd1-a10c-74cc7d16b4bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ab69d362-2a65-460a-8fc1-296617ed947d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_cdbad16f-a880-4fd1-a10c-74cc7d16b4bc" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_9c28dced-459f-4ef0-8b6e-258d8eee713f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ab69d362-2a65-460a-8fc1-296617ed947d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_9c28dced-459f-4ef0-8b6e-258d8eee713f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_6300a6bb-b3e0-478e-ad72-a1a5be193c05" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_9c28dced-459f-4ef0-8b6e-258d8eee713f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_6300a6bb-b3e0-478e-ad72-a1a5be193c05" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesDetails5_1" xlink:type="simple" xlink:href="apog-20210529.xsd#RevenueReceivablesandContractAssetsandLiabilitiesDetails5_1"/>

<link:definitionLink xlink:role="http://www.apog.com/role/RevenueReceivablesandContractAssetsandLiabilitiesDetails5_1" xlink:type="extended" id="i1f32165e03524bddb6d33d1b22436846_RevenueReceivablesandContractAssetsandLiabilitiesDetails5_1">

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ab69d362-2a65-460a-8fc1-296617ed947d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_cdbad16f-a880-4fd1-a10c-74cc7d16b4bc" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/FinancialInstrumentsDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#FinancialInstrumentsDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/FinancialInstrumentsDetails" xlink:type="extended" id="i1175c48092134c65a461b9f2de0ae5ff_FinancialInstrumentsDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_40c826ae-88a9-46fc-bc76-07c4b4c3f965" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_40c826ae-88a9-46fc-bc76-07c4b4c3f965" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_125f8265-2a2c-4811-a951-5702b5b43869" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_125f8265-2a2c-4811-a951-5702b5b43869" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_d7968c07-c6d4-4077-aff7-95a4707cd04e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_d7968c07-c6d4-4077-aff7-95a4707cd04e" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_bbc5a459-0a73-48ea-9564-7cba4d4387e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_bbc5a459-0a73-48ea-9564-7cba4d4387e6" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_9261c84a-8276-4ad4-9f14-304a71af0d05" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5c3fb6ab-c13f-4ec7-a479-c5700254d943" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_9261c84a-8276-4ad4-9f14-304a71af0d05" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_638cc26f-ff4f-4d55-8026-018b0f57c882" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_9261c84a-8276-4ad4-9f14-304a71af0d05" xlink:to="loc_us-gaap_InvestmentTypeAxis_638cc26f-ff4f-4d55-8026-018b0f57c882" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_638cc26f-ff4f-4d55-8026-018b0f57c882_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_638cc26f-ff4f-4d55-8026-018b0f57c882" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_638cc26f-ff4f-4d55-8026-018b0f57c882_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_21f04a22-07c8-435e-89ce-00d3c94796e9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_638cc26f-ff4f-4d55-8026-018b0f57c882" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_21f04a22-07c8-435e-89ce-00d3c94796e9" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_MunicipalandCorporateBondsMember_8b13ef44-ce30-46cb-9ba7-763d3d64bd12" xlink:href="apog-20210529.xsd#apog_MunicipalandCorporateBondsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_21f04a22-07c8-435e-89ce-00d3c94796e9" xlink:to="loc_apog_MunicipalandCorporateBondsMember_8b13ef44-ce30-46cb-9ba7-763d3d64bd12" xlink:type="arc" order="0"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/FinancialInstrumentsDetails3" xlink:type="simple" xlink:href="apog-20210529.xsd#FinancialInstrumentsDetails3"/>

<link:definitionLink xlink:role="http://www.apog.com/role/FinancialInstrumentsDetails3" xlink:type="extended" id="i316054f71b1446908d66c4e71daf73e1_FinancialInstrumentsDetails3">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue_6b5c11bf-3bf3-44f6-b871-dc05557b0f96" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsAtCarryingValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_MoneyMarketFundsAtCarryingValue_6b5c11bf-3bf3-44f6-b871-dc05557b0f96" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ShorttermInvestmentsMunicipalAndCorporateBonds_e4882403-bd00-4456-bed0-e4eb750e63a2" xlink:href="apog-20210529.xsd#apog_ShorttermInvestmentsMunicipalAndCorporateBonds"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_apog_ShorttermInvestmentsMunicipalAndCorporateBonds_e4882403-bd00-4456-bed0-e4eb750e63a2" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashSurrenderValueFairValueDisclosure_c8a33835-17ca-4aee-8b7d-59424819edb0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashSurrenderValueFairValueDisclosure"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_CashSurrenderValueFairValueDisclosure_c8a33835-17ca-4aee-8b7d-59424819edb0" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9ef4bf1d-d085-4a7c-b8c1-f9d95c6162c2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_9ef4bf1d-d085-4a7c-b8c1-f9d95c6162c2" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesFairValueDisclosure_17ebe62e-0aa9-47dd-8e61-ac409b28ce37" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesFairValueDisclosure"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_OtherLiabilitiesFairValueDisclosure_17ebe62e-0aa9-47dd-8e61-ac409b28ce37" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_cce15c65-bb2c-498e-a2af-429aa2ea10d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateDerivativeLiabilitiesAtFairValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_cce15c65-bb2c-498e-a2af-429aa2ea10d9" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_da42a0ad-ee55-401b-b23a-0799948be742" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_46185367-10d8-4bc3-a5d7-346b96b5fff1" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_da42a0ad-ee55-401b-b23a-0799948be742" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8f30468-82cc-41ed-b7b6-313b1bdc1367" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_da42a0ad-ee55-401b-b23a-0799948be742" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8f30468-82cc-41ed-b7b6-313b1bdc1367" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f8f30468-82cc-41ed-b7b6-313b1bdc1367_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8f30468-82cc-41ed-b7b6-313b1bdc1367" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f8f30468-82cc-41ed-b7b6-313b1bdc1367_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ffabdc90-df80-404b-9246-e78c16f2751c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8f30468-82cc-41ed-b7b6-313b1bdc1367" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ffabdc90-df80-404b-9246-e78c16f2751c" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_60c8ad6f-226d-4d28-8ec0-e0568cdf1205" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ffabdc90-df80-404b-9246-e78c16f2751c" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_60c8ad6f-226d-4d28-8ec0-e0568cdf1205" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_3313d137-9643-4806-9fea-b12780685dae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ffabdc90-df80-404b-9246-e78c16f2751c" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_3313d137-9643-4806-9fea-b12780685dae" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_da42a0ad-ee55-401b-b23a-0799948be742" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_6ca7df24-19b3-4fc8-920e-fae674fe2ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2f77d9d1-6b6f-43ea-b8bd-2f32a57c8a40" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_6ca7df24-19b3-4fc8-920e-fae674fe2ec4" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_5ba63a22-a550-4dcc-9689-f58cb99a99ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeForwardMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_6ca7df24-19b3-4fc8-920e-fae674fe2ec4" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_5ba63a22-a550-4dcc-9689-f58cb99a99ee" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityOptionMember_3b7565e4-57ea-4d67-a2d9-99dd1a89878c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommodityOptionMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_6ca7df24-19b3-4fc8-920e-fae674fe2ec4" xlink:to="loc_us-gaap_CommodityOptionMember_3b7565e4-57ea-4d67-a2d9-99dd1a89878c" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/FinancialInstrumentsDetailsTextual" xlink:type="simple" xlink:href="apog-20210529.xsd#FinancialInstrumentsDetailsTextual"/>

<link:definitionLink xlink:role="http://www.apog.com/role/FinancialInstrumentsDetailsTextual" xlink:type="extended" id="i9d0ac7e4b7594ac587a10cb50aa883b7_FinancialInstrumentsDetailsTextual">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_3f87988a-c77a-43a3-92c1-716d12322eee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativesFairValueLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_b52c8c8c-a16d-4793-8692-db67af6ea590" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_3f87988a-c77a-43a3-92c1-716d12322eee" xlink:to="loc_us-gaap_DerivativeNotionalAmount_b52c8c8c-a16d-4793-8692-db67af6ea590" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f6d94997-fefd-48b9-8da9-0d6049411101" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_3f87988a-c77a-43a3-92c1-716d12322eee" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f6d94997-fefd-48b9-8da9-0d6049411101" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_083a95ec-0262-4eed-8ebf-2a742b8e114e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_HedgingDesignationAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f6d94997-fefd-48b9-8da9-0d6049411101" xlink:to="loc_us-gaap_HedgingDesignationAxis_083a95ec-0262-4eed-8ebf-2a742b8e114e" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_083a95ec-0262-4eed-8ebf-2a742b8e114e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_HedgingDesignationDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_083a95ec-0262-4eed-8ebf-2a742b8e114e" xlink:to="loc_us-gaap_HedgingDesignationDomain_083a95ec-0262-4eed-8ebf-2a742b8e114e_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_bc8d34d3-3305-4d49-ab9f-0d019cf9edb5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_HedgingDesignationDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_083a95ec-0262-4eed-8ebf-2a742b8e114e" xlink:to="loc_us-gaap_HedgingDesignationDomain_bc8d34d3-3305-4d49-ab9f-0d019cf9edb5" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_02419b24-21c3-4f65-a143-f683fc3d057c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_bc8d34d3-3305-4d49-ab9f-0d019cf9edb5" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_02419b24-21c3-4f65-a143-f683fc3d057c" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_09dcce34-3d59-4423-b4a2-3c939eb00c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f6d94997-fefd-48b9-8da9-0d6049411101" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_09dcce34-3d59-4423-b4a2-3c939eb00c7f" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_09dcce34-3d59-4423-b4a2-3c939eb00c7f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_09dcce34-3d59-4423-b4a2-3c939eb00c7f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_09dcce34-3d59-4423-b4a2-3c939eb00c7f_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_54f68860-35eb-4583-8c0b-b233bca9ec50" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_09dcce34-3d59-4423-b4a2-3c939eb00c7f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_54f68860-35eb-4583-8c0b-b233bca9ec50" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a990d0-05a9-43df-9f89-6bd561229d5a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateSwapMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_54f68860-35eb-4583-8c0b-b233bca9ec50" xlink:to="loc_us-gaap_InterestRateSwapMember_01a990d0-05a9-43df-9f89-6bd561229d5a" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_aac96993-573b-4ccc-9d64-2551757311d7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignExchangeForwardMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_54f68860-35eb-4583-8c0b-b233bca9ec50" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_aac96993-573b-4ccc-9d64-2551757311d7" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityOptionMember_31e34b7c-e77d-4cc4-834e-c84d0a99df1d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommodityOptionMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_54f68860-35eb-4583-8c0b-b233bca9ec50" xlink:to="loc_us-gaap_CommodityOptionMember_31e34b7c-e77d-4cc4-834e-c84d0a99df1d" xlink:type="arc" order="2"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/GoodwillandOtherIdentifiableIntangibleAssetsDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#GoodwillandOtherIdentifiableIntangibleAssetsDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/GoodwillandOtherIdentifiableIntangibleAssetsDetails" xlink:type="extended" id="i6334c839b08c4b88b5c15b41b71aef52_GoodwillandOtherIdentifiableIntangibleAssetsDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_6399ebf5-87fc-43c7-80fe-0f25306b4a87" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillRollForward"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_6399ebf5-87fc-43c7-80fe-0f25306b4a87" xlink:to="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_3d1093ef-819d-4fac-b3d2-d5be6b70cc8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:to="loc_us-gaap_Goodwill_3d1093ef-819d-4fac-b3d2-d5be6b70cc8f" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_1961c640-056f-4ef4-8cbc-27320eb2e7f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_1961c640-056f-4ef4-8cbc-27320eb2e7f6" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_e2893a05-fd70-4453-a04a-a0f023c93625" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_e2893a05-fd70-4453-a04a-a0f023c93625" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_be8deb0d-897a-49bf-a948-625dcc1a0e88" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_8f4ff929-69d9-4192-a532-d4238407b83e" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_be8deb0d-897a-49bf-a948-625dcc1a0e88" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_8c2538a5-2d3f-4091-8223-283196a2784e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_cd540a4f-2748-48b8-8639-7f11c4f771cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfGoodwillTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_6399ebf5-87fc-43c7-80fe-0f25306b4a87" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_cd540a4f-2748-48b8-8639-7f11c4f771cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_fd6181ae-55d5-4b67-b9b6-2eea22015a63" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_cd540a4f-2748-48b8-8639-7f11c4f771cd" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_fd6181ae-55d5-4b67-b9b6-2eea22015a63" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_fd6181ae-55d5-4b67-b9b6-2eea22015a63_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_fd6181ae-55d5-4b67-b9b6-2eea22015a63" xlink:to="loc_us-gaap_SegmentDomain_fd6181ae-55d5-4b67-b9b6-2eea22015a63_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_fd6181ae-55d5-4b67-b9b6-2eea22015a63" xlink:to="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalFramingSegmentMember_aef46213-df62-4ff1-a9cd-9cb3345bcffb" xlink:href="apog-20210529.xsd#apog_ArchitecturalFramingSegmentMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:to="loc_apog_ArchitecturalFramingSegmentMember_aef46213-df62-4ff1-a9cd-9cb3345bcffb" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalMember_4908cbdb-b64f-4494-ab85-bd99416a0cae" xlink:href="apog-20210529.xsd#apog_ArchitecturalMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:to="loc_apog_ArchitecturalMember_4908cbdb-b64f-4494-ab85-bd99416a0cae" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalServicesSegmentMember_af5757f6-e486-43e5-912e-8ac60ce1e6fd" xlink:href="apog-20210529.xsd#apog_ArchitecturalServicesSegmentMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:to="loc_apog_ArchitecturalServicesSegmentMember_af5757f6-e486-43e5-912e-8ac60ce1e6fd" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_LargeScaleOpticalMember_3837571c-ccf6-401e-b7b6-f3c6f53c271d" xlink:href="apog-20210529.xsd#apog_LargeScaleOpticalMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_305312f6-7b2f-489f-9da5-94a30b6f0f33" xlink:to="loc_apog_LargeScaleOpticalMember_3837571c-ccf6-401e-b7b6-f3c6f53c271d" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitAxis_27b46508-0ba3-4ba9-9f51-1e41594e41b9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReportingUnitAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_cd540a4f-2748-48b8-8639-7f11c4f771cd" xlink:to="loc_us-gaap_ReportingUnitAxis_27b46508-0ba3-4ba9-9f51-1e41594e41b9" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_27b46508-0ba3-4ba9-9f51-1e41594e41b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReportingUnitDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReportingUnitAxis_27b46508-0ba3-4ba9-9f51-1e41594e41b9" xlink:to="loc_us-gaap_ReportingUnitDomain_27b46508-0ba3-4ba9-9f51-1e41594e41b9_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_2ebee518-09f6-40b3-94fb-4788e2be3776" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReportingUnitDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReportingUnitAxis_27b46508-0ba3-4ba9-9f51-1e41594e41b9" xlink:to="loc_us-gaap_ReportingUnitDomain_2ebee518-09f6-40b3-94fb-4788e2be3776" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_EFCOCorporationMember_a1f1abd2-ff73-4a10-af31-6d652eb83b5f" xlink:href="apog-20210529.xsd#apog_EFCOCorporationMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_2ebee518-09f6-40b3-94fb-4788e2be3776" xlink:to="loc_apog_EFCOCorporationMember_a1f1abd2-ff73-4a10-af31-6d652eb83b5f" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_SotawallMember_69c28e18-9304-4b29-a7cc-f75db3294f43" xlink:href="apog-20210529.xsd#apog_SotawallMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_2ebee518-09f6-40b3-94fb-4788e2be3776" xlink:to="loc_apog_SotawallMember_69c28e18-9304-4b29-a7cc-f75db3294f43" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/GoodwillandOtherIdentifiableIntangibleAssetsDetails1" xlink:type="simple" xlink:href="apog-20210529.xsd#GoodwillandOtherIdentifiableIntangibleAssetsDetails1"/>

<link:definitionLink xlink:role="http://www.apog.com/role/GoodwillandOtherIdentifiableIntangibleAssetsDetails1" xlink:type="extended" id="i46c2dfc7200c46f5bab83f0129219b23_GoodwillandOtherIdentifiableIntangibleAssetsDetails1">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3d9a7b27-e5cf-47de-86d1-5ff58ea4a362" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3d9a7b27-e5cf-47de-86d1-5ff58ea4a362" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_af2afd02-e32e-422f-9402-3fef02acfe69" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_af2afd02-e32e-422f-9402-3fef02acfe69" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_FiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustment_31e36089-9dbb-4511-bc8b-1bd5baf9a4e1" xlink:href="apog-20210529.xsd#apog_FiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustment"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:to="loc_apog_FiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustment_31e36089-9dbb-4511-bc8b-1bd5baf9a4e1" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c11b8b96-dc06-4a11-a03b-ba6ee0bb39da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_8bc8a0d1-a1b1-44ac-af43-26f2a44b9312" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c11b8b96-dc06-4a11-a03b-ba6ee0bb39da" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_2e137fe1-1841-449b-8bbe-7d1a62c5e6ac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_2e137fe1-1841-449b-8bbe-7d1a62c5e6ac" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_83ab5bc7-e386-401d-8231-f50aa3521eba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_83ab5bc7-e386-401d-8231-f50aa3521eba" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_IndefiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustments_0f40df6d-26c9-44f6-a448-4cdbcc2e1ea1" xlink:href="apog-20210529.xsd#apog_IndefiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustments"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_apog_IndefiniteLivedIdentifiableIntangibleAssetsForeignCurrencyTranslationAdjustments_0f40df6d-26c9-44f6-a448-4cdbcc2e1ea1" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_IndefinitelivedIntangibleAssetsExcludingGoodwillNetoftranslationadjustments_5d11dea3-0d09-4d83-9883-af05dcd9d95d" xlink:href="apog-20210529.xsd#apog_IndefinitelivedIntangibleAssetsExcludingGoodwillNetoftranslationadjustments"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_apog_IndefinitelivedIntangibleAssetsExcludingGoodwillNetoftranslationadjustments_5d11dea3-0d09-4d83-9883-af05dcd9d95d" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_cc296c00-71af-4fb8-9b73-17b15741a2b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_cc296c00-71af-4fb8-9b73-17b15741a2b3" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_IntangibleAssetsAccumulatedAmortization_a70215f3-f2eb-44e2-8c34-ea9bdbb1c31e" xlink:href="apog-20210529.xsd#apog_IntangibleAssetsAccumulatedAmortization"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_apog_IntangibleAssetsAccumulatedAmortization_a70215f3-f2eb-44e2-8c34-ea9bdbb1c31e" xlink:type="arc" order="6"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_e2a1f2c8-a0f5-469a-aa66-014c270d3459" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_e2a1f2c8-a0f5-469a-aa66-014c270d3459" xlink:type="arc" order="7"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_IntangibleAssetsForeignCurrencyTranslation_0d6627b0-7827-406d-a089-7ad508073553" xlink:href="apog-20210529.xsd#apog_IntangibleAssetsForeignCurrencyTranslation"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_apog_IntangibleAssetsForeignCurrencyTranslation_0d6627b0-7827-406d-a089-7ad508073553" xlink:type="arc" order="8"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_d20f16db-83b1-4a99-8537-077b50277b64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_d20f16db-83b1-4a99-8537-077b50277b64" xlink:type="arc" order="9"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_9295d72f-c97e-4b8b-8dda-2ae2599e54b4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e7a0660f-4845-4905-838a-619628322c76" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_9295d72f-c97e-4b8b-8dda-2ae2599e54b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ea6fbafb-36b3-435e-8c98-b0f0a55c5368" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_9295d72f-c97e-4b8b-8dda-2ae2599e54b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ea6fbafb-36b3-435e-8c98-b0f0a55c5368" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ea6fbafb-36b3-435e-8c98-b0f0a55c5368_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ea6fbafb-36b3-435e-8c98-b0f0a55c5368" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ea6fbafb-36b3-435e-8c98-b0f0a55c5368_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1ac8b17d-6d9d-489e-9a8e-8d12d3399cf1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ea6fbafb-36b3-435e-8c98-b0f0a55c5368" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1ac8b17d-6d9d-489e-9a8e-8d12d3399cf1" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_1c66df42-adb4-4622-9986-be8d91eaecef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CustomerRelationshipsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1ac8b17d-6d9d-489e-9a8e-8d12d3399cf1" xlink:to="loc_us-gaap_CustomerRelationshipsMember_1c66df42-adb4-4622-9986-be8d91eaecef" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksMember_5cd09809-3647-4478-9ee8-5a6c578c4192" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TrademarksMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1ac8b17d-6d9d-489e-9a8e-8d12d3399cf1" xlink:to="loc_us-gaap_TrademarksMember_5cd09809-3647-4478-9ee8-5a6c578c4192" xlink:type="arc" order="1"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/DebtDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#DebtDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/DebtDetails" xlink:type="extended" id="if5ff386e079b41d081f1f2c499e8c3ba_DebtDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_532764bf-a3e4-4abe-9754-c8f42f4ba0df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_532764bf-a3e4-4abe-9754-c8f42f4ba0df" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_1991ad15-8a1e-448c-a323-22773159bbcf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermBorrowings"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_ShortTermBorrowings_1991ad15-8a1e-448c-a323-22773159bbcf" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_9df77b9d-4292-4f0c-9c90-e35144a26634" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCredit"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_LineOfCredit_9df77b9d-4292-4f0c-9c90-e35144a26634" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_875592b9-cd6a-44a5-bd42-22b844fa93cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_LongTermDebt_875592b9-cd6a-44a5-bd42-22b844fa93cf" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaid_e5b5e742-0781-43e1-bee6-3cfea9e31158" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPaid"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_InterestPaid_e5b5e742-0781-43e1-bee6-3cfea9e31158" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_5414527e-5017-4893-9e2f-95e5a14ea446" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_df340b6e-b186-44fd-842d-b81331773ca1" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_5414527e-5017-4893-9e2f-95e5a14ea446" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_4069722b-3d04-4222-9fe7-643e0a4edcff" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_5414527e-5017-4893-9e2f-95e5a14ea446" xlink:to="loc_srt_StatementGeographicalAxis_4069722b-3d04-4222-9fe7-643e0a4edcff" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_4069722b-3d04-4222-9fe7-643e0a4edcff_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_4069722b-3d04-4222-9fe7-643e0a4edcff" xlink:to="loc_srt_SegmentGeographicalDomain_4069722b-3d04-4222-9fe7-643e0a4edcff_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_cf195d2e-35a1-42e2-b614-f458ba6fbac2" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_4069722b-3d04-4222-9fe7-643e0a4edcff" xlink:to="loc_srt_SegmentGeographicalDomain_cf195d2e-35a1-42e2-b614-f458ba6fbac2" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_country_CA_9a331f1a-1303-44a0-82a5-6ca92ddb3350" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_CA"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_cf195d2e-35a1-42e2-b614-f458ba6fbac2" xlink:to="loc_country_CA_9a331f1a-1303-44a0-82a5-6ca92ddb3350" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_53ee45eb-fdf9-4e70-a939-fd681da5b26b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_5414527e-5017-4893-9e2f-95e5a14ea446" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_53ee45eb-fdf9-4e70-a939-fd681da5b26b" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_53ee45eb-fdf9-4e70-a939-fd681da5b26b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_53ee45eb-fdf9-4e70-a939-fd681da5b26b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_53ee45eb-fdf9-4e70-a939-fd681da5b26b_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_363dd20a-2460-44a5-9f3e-592b141de044" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_53ee45eb-fdf9-4e70-a939-fd681da5b26b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_363dd20a-2460-44a5-9f3e-592b141de044" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_0f577b6b-f68c-4299-986f-92e73dcd2ecc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_363dd20a-2460-44a5-9f3e-592b141de044" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_0f577b6b-f68c-4299-986f-92e73dcd2ecc" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_RecoveryZoneFacilityBondsMember_9b368c2d-ea0b-4155-b3d6-6a1538c9ae68" xlink:href="apog-20210529.xsd#apog_RecoveryZoneFacilityBondsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_363dd20a-2460-44a5-9f3e-592b141de044" xlink:to="loc_apog_RecoveryZoneFacilityBondsMember_9b368c2d-ea0b-4155-b3d6-6a1538c9ae68" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_c22f0b24-e311-4a42-b136-41ea459de0f7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermDebtTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_5414527e-5017-4893-9e2f-95e5a14ea446" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_c22f0b24-e311-4a42-b136-41ea459de0f7" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_c22f0b24-e311-4a42-b136-41ea459de0f7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermDebtTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_c22f0b24-e311-4a42-b136-41ea459de0f7" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_c22f0b24-e311-4a42-b136-41ea459de0f7_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_4dd1ab2b-b5ae-4727-bf0c-14c8641ac0c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermDebtTypeDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_c22f0b24-e311-4a42-b136-41ea459de0f7" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_4dd1ab2b-b5ae-4727-bf0c-14c8641ac0c7" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_4ae2c69f-4f87-46c6-86fe-6cb121fe2359" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LetterOfCreditMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_4dd1ab2b-b5ae-4727-bf0c-14c8641ac0c7" xlink:to="loc_us-gaap_LetterOfCreditMember_4ae2c69f-4f87-46c6-86fe-6cb121fe2359" xlink:type="arc" order="0"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/CommitmentsandContingentLiabilitiesDetails2" xlink:type="simple" xlink:href="apog-20210529.xsd#CommitmentsandContingentLiabilitiesDetails2"/>

<link:definitionLink xlink:role="http://www.apog.com/role/CommitmentsandContingentLiabilitiesDetails2" xlink:type="extended" id="ib87bb0669eab4677b4b5afebcad56c47_CommitmentsandContingentLiabilitiesDetails2">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_b486ab87-2abc-4dd0-9c74-9dd8b41c6305" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_GrossProceedsFromNewMarketsTaxCreditTransaction_73b51019-4342-40b0-a495-4aace222987c" xlink:href="apog-20210529.xsd#apog_GrossProceedsFromNewMarketsTaxCreditTransaction"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_b486ab87-2abc-4dd0-9c74-9dd8b41c6305" xlink:to="loc_apog_GrossProceedsFromNewMarketsTaxCreditTransaction_73b51019-4342-40b0-a495-4aace222987c" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_f243ff03-14f5-4ad7-819b-54dfbc45bca2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCostsCurrentAndNoncurrent"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_b486ab87-2abc-4dd0-9c74-9dd8b41c6305" xlink:to="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_f243ff03-14f5-4ad7-819b-54dfbc45bca2" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_NewMarketsTaxCreditTransactionBenefitNet_d92cc4e5-daca-40a3-afcf-129a3242869a" xlink:href="apog-20210529.xsd#apog_NewMarketsTaxCreditTransactionBenefitNet"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_b486ab87-2abc-4dd0-9c74-9dd8b41c6305" xlink:to="loc_apog_NewMarketsTaxCreditTransactionBenefitNet_d92cc4e5-daca-40a3-afcf-129a3242869a" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_83096bc7-17a6-4fb8-aaec-25fd3efd8492" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxContingencyTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_b486ab87-2abc-4dd0-9c74-9dd8b41c6305" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_83096bc7-17a6-4fb8-aaec-25fd3efd8492" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_TerminationDateAxis_3f0ff251-4fcb-4e97-aea4-908250a98944" xlink:href="apog-20210529.xsd#apog_TerminationDateAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_83096bc7-17a6-4fb8-aaec-25fd3efd8492" xlink:to="loc_apog_TerminationDateAxis_3f0ff251-4fcb-4e97-aea4-908250a98944" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_TerminationDateDomain_3f0ff251-4fcb-4e97-aea4-908250a98944_default" xlink:href="apog-20210529.xsd#apog_TerminationDateDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_apog_TerminationDateAxis_3f0ff251-4fcb-4e97-aea4-908250a98944" xlink:to="loc_apog_TerminationDateDomain_3f0ff251-4fcb-4e97-aea4-908250a98944_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_TerminationDateDomain_85f4424b-0880-478f-b0dd-b8b16cad9181" xlink:href="apog-20210529.xsd#apog_TerminationDateDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_apog_TerminationDateAxis_3f0ff251-4fcb-4e97-aea4-908250a98944" xlink:to="loc_apog_TerminationDateDomain_85f4424b-0880-478f-b0dd-b8b16cad9181" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_June2023Member_e8784067-29d2-4a91-81b1-e4e82cae47d4" xlink:href="apog-20210529.xsd#apog_June2023Member"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_apog_TerminationDateDomain_85f4424b-0880-478f-b0dd-b8b16cad9181" xlink:to="loc_apog_June2023Member_e8784067-29d2-4a91-81b1-e4e82cae47d4" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_July2025Member_4ceb8428-fd26-4109-a074-65f13f9f492f" xlink:href="apog-20210529.xsd#apog_July2025Member"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_apog_TerminationDateDomain_85f4424b-0880-478f-b0dd-b8b16cad9181" xlink:to="loc_apog_July2025Member_4ceb8428-fd26-4109-a074-65f13f9f492f" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_August2025Member_68c71f26-5631-4bf6-8dac-a115761de83c" xlink:href="apog-20210529.xsd#apog_August2025Member"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_apog_TerminationDateDomain_85f4424b-0880-478f-b0dd-b8b16cad9181" xlink:to="loc_apog_August2025Member_68c71f26-5631-4bf6-8dac-a115761de83c" xlink:type="arc" order="2"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/ShareBasedCompensationDetails1" xlink:type="simple" xlink:href="apog-20210529.xsd#ShareBasedCompensationDetails1"/>

<link:definitionLink xlink:role="http://www.apog.com/role/ShareBasedCompensationDetails1" xlink:type="extended" id="i3ff9cc0400dc4709b4d66f8e3e7a0eab_ShareBasedCompensationDetails1">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_e938e07e-668b-46fa-9073-870033136485" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_e938e07e-668b-46fa-9073-870033136485" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_e814e33a-7c61-4f37-954b-c2c27213a54c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_e814e33a-7c61-4f37-954b-c2c27213a54c" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_80e71eea-3321-4c02-bcdc-40fd31a145e4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_80e71eea-3321-4c02-bcdc-40fd31a145e4" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_249703a5-9727-4e09-b8c9-1e74964bae4a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_4656774a-05e1-4899-a02b-932ecb4d5edc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_71d60ef5-7e78-4718-8720-4546a8149e22" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_4656774a-05e1-4899-a02b-932ecb4d5edc" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_b7d9f810-db5b-403d-b7a5-485d09d6a00c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_b7d9f810-db5b-403d-b7a5-485d09d6a00c" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_b655120e-0150-4097-86e1-9508543e68cb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_b655120e-0150-4097-86e1-9508543e68cb" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_747e6708-1983-49c7-897e-9ffd6cd3e781" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_747e6708-1983-49c7-897e-9ffd6cd3e781" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0558aa83-4a48-4682-ae38-1cbcb2871d3d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_62b0f64c-1239-44c9-a593-46c314620c5f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_bfa7af4e-17f4-4c6d-a079-e003cb22ae6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_62b0f64c-1239-44c9-a593-46c314620c5f" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9ca5e24f-c295-46c6-a7e2-6889760a710c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9ca5e24f-c295-46c6-a7e2-6889760a710c" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_f8305701-4391-4d17-bd46-b1030e1f5046" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_f8305701-4391-4d17-bd46-b1030e1f5046" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_724e517e-590a-4f6d-9f9d-ef644ae73d47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_724e517e-590a-4f6d-9f9d-ef644ae73d47" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_d92f2b35-b954-4d2e-a7ed-4ff2771f0c18" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_d92f2b35-b954-4d2e-a7ed-4ff2771f0c18" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2f9f7f41-ee02-4125-b475-36c4dc843a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a5a66d03-a686-42fb-826e-edbdac7c6529" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2f9f7f41-ee02-4125-b475-36c4dc843a6c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_3d792903-b2b4-4f87-ae11-c85e227654a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2f9f7f41-ee02-4125-b475-36c4dc843a6c" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_3d792903-b2b4-4f87-ae11-c85e227654a8" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_3d792903-b2b4-4f87-ae11-c85e227654a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_3d792903-b2b4-4f87-ae11-c85e227654a8" xlink:to="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_3d792903-b2b4-4f87-ae11-c85e227654a8_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_670d4ff1-a8e0-4e7c-985e-9420108cf562" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_3d792903-b2b4-4f87-ae11-c85e227654a8" xlink:to="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_670d4ff1-a8e0-4e7c-985e-9420108cf562" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationShareBasedPaymentsMember_9222e01d-84a0-4d92-9004-597ed18ff4f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationShareBasedPaymentsMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_670d4ff1-a8e0-4e7c-985e-9420108cf562" xlink:to="loc_us-gaap_DeferredCompensationShareBasedPaymentsMember_9222e01d-84a0-4d92-9004-597ed18ff4f1" xlink:type="arc" order="0"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/ShareBasedCompensationDetailsTextual" xlink:type="simple" xlink:href="apog-20210529.xsd#ShareBasedCompensationDetailsTextual"/>

<link:definitionLink xlink:role="http://www.apog.com/role/ShareBasedCompensationDetailsTextual" xlink:type="extended" id="id3bb34c6e7484e35a75cb6c10c8d23aa_ShareBasedCompensationDetailsTextual">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_086d0097-77d2-473b-afe0-d301b12b2012" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ShareBasedCompensation_086d0097-77d2-473b-afe0-d301b12b2012" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_a9e2b1a8-0627-4507-b55d-e5189bec0f97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_a9e2b1a8-0627-4507-b55d-e5189bec0f97" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue_67d75c7b-6309-4adc-85d1-98aa98f864f9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue_67d75c7b-6309-4adc-85d1-98aa98f864f9" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_87aa1779-1571-4bbc-8658-cee5ff78b83a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_87aa1779-1571-4bbc-8658-cee5ff78b83a" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_985e4751-4ddb-4d5e-8742-753d3b9c790d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_985e4751-4ddb-4d5e-8742-753d3b9c790d" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_db86a184-3963-46d9-8eb8-cbb3c091276f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_db86a184-3963-46d9-8eb8-cbb3c091276f" xlink:type="arc" order="5"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans_43f7861b-44ee-40c8-a89f-d8720c095298" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans_43f7861b-44ee-40c8-a89f-d8720c095298" xlink:type="arc" order="6"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_830997ad-f126-4f05-b360-aa4784e1b3e4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0db27eed-58f1-4258-8871-64aeb3428fda" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_830997ad-f126-4f05-b360-aa4784e1b3e4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_830997ad-f126-4f05-b360-aa4784e1b3e4" xlink:to="loc_us-gaap_AwardTypeAxis_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e53db056-bbb5-40eb-bf49-bdbeb419ba0e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_9b3b1d70-e7f7-4bd0-b7dd-e3fa5ead38d6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e53db056-bbb5-40eb-bf49-bdbeb419ba0e" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_be71f1f4-35e9-4551-bf91-208a9cb59d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedStockMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e53db056-bbb5-40eb-bf49-bdbeb419ba0e" xlink:to="loc_us-gaap_RestrictedStockMember_be71f1f4-35e9-4551-bf91-208a9cb59d7e" xlink:type="arc" order="0"/>

</link:definitionLink>

<link:roleRef roleURI="http://www.apog.com/role/SegmentInformationDetails" xlink:type="simple" xlink:href="apog-20210529.xsd#SegmentInformationDetails"/>

<link:definitionLink xlink:role="http://www.apog.com/role/SegmentInformationDetails" xlink:type="extended" id="i606732fb6cbc499199ce3594ba8811dc_SegmentInformationDetails">

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_74109fc7-4fed-4634-a60d-b35ce61f77f4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_be1d19be-164f-4e85-bcca-c1aed78dc504" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationProfitLossAbstract"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_74109fc7-4fed-4634-a60d-b35ce61f77f4" xlink:to="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_be1d19be-164f-4e85-bcca-c1aed78dc504" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_782a4b20-1ee2-4449-905f-7634ec73963d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_be1d19be-164f-4e85-bcca-c1aed78dc504" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_782a4b20-1ee2-4449-905f-7634ec73963d" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_a44f64d7-5aaf-44eb-9e50-5c3b80ac888d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_be1d19be-164f-4e85-bcca-c1aed78dc504" xlink:to="loc_us-gaap_OperatingIncomeLoss_a44f64d7-5aaf-44eb-9e50-5c3b80ac888d" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f6e37c4d-ad42-4998-b23f-397fad969cbf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_74109fc7-4fed-4634-a60d-b35ce61f77f4" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f6e37c4d-ad42-4998-b23f-397fad969cbf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7e287b6b-e626-4f13-8538-1d2d9606af25" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f6e37c4d-ad42-4998-b23f-397fad969cbf" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7e287b6b-e626-4f13-8538-1d2d9606af25" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_7e287b6b-e626-4f13-8538-1d2d9606af25_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7e287b6b-e626-4f13-8538-1d2d9606af25" xlink:to="loc_us-gaap_SegmentDomain_7e287b6b-e626-4f13-8538-1d2d9606af25_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7e287b6b-e626-4f13-8538-1d2d9606af25" xlink:to="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalFramingSegmentMember_f52740f3-ba34-4f3d-927a-38385e6ce452" xlink:href="apog-20210529.xsd#apog_ArchitecturalFramingSegmentMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:to="loc_apog_ArchitecturalFramingSegmentMember_f52740f3-ba34-4f3d-927a-38385e6ce452" xlink:type="arc" order="0"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalMember_ef8a513a-273f-446c-9a3e-39cd4c4f6252" xlink:href="apog-20210529.xsd#apog_ArchitecturalMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:to="loc_apog_ArchitecturalMember_ef8a513a-273f-446c-9a3e-39cd4c4f6252" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_ArchitecturalServicesSegmentMember_0de0d698-8ae3-4dd3-9299-9c0bb20c47fc" xlink:href="apog-20210529.xsd#apog_ArchitecturalServicesSegmentMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:to="loc_apog_ArchitecturalServicesSegmentMember_0de0d698-8ae3-4dd3-9299-9c0bb20c47fc" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_apog_LargeScaleOpticalMember_142a785d-a991-45f6-bfd9-f19cb6c17da2" xlink:href="apog-20210529.xsd#apog_LargeScaleOpticalMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:to="loc_apog_LargeScaleOpticalMember_142a785d-a991-45f6-bfd9-f19cb6c17da2" xlink:type="arc" order="3"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateAndOtherMember_8c36345e-2232-4201-82b4-bad5124be46c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateAndOtherMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5daf40be-e28f-44cc-865b-a144cb252690" xlink:to="loc_us-gaap_CorporateAndOtherMember_8c36345e-2232-4201-82b4-bad5124be46c" xlink:type="arc" order="4"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_1b2f7525-777c-4bc9-8645-3e6460ee7467" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsAxis"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f6e37c4d-ad42-4998-b23f-397fad969cbf" xlink:to="loc_srt_ConsolidationItemsAxis_1b2f7525-777c-4bc9-8645-3e6460ee7467" xlink:type="arc" order="2"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_1b2f7525-777c-4bc9-8645-3e6460ee7467_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_1b2f7525-777c-4bc9-8645-3e6460ee7467" xlink:to="loc_srt_ConsolidationItemsDomain_1b2f7525-777c-4bc9-8645-3e6460ee7467_default" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_23d7c2cf-57b0-4b81-8d04-a970feb3f1de" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ConsolidationItemsDomain"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_1b2f7525-777c-4bc9-8645-3e6460ee7467" xlink:to="loc_srt_ConsolidationItemsDomain_23d7c2cf-57b0-4b81-8d04-a970feb3f1de" xlink:type="arc" order="1"/>

<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_4e12e95b-6b87-4ded-9b7f-51423b7366eb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntersegmentEliminationMember"/>

<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_23d7c2cf-57b0-4b81-8d04-a970feb3f1de" xlink:to="loc_us-gaap_IntersegmentEliminationMember_4e12e95b-6b87-4ded-9b7f-51423b7366eb" xlink:type="arc" order="0"/>

</link:definitionLink>

</link:linkbase>

14 Subsequent Filings that Reference this Filing

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

 4/26/24  Apogee Enterprises, Inc.          10-K        3/02/24  122:12M
 1/03/24  Apogee Enterprises, Inc.          10-Q       11/25/23   67:5.1M
10/04/23  Apogee Enterprises, Inc.          10-Q        8/26/23   67:5M
 6/28/23  Apogee Enterprises, Inc.          10-Q        5/27/23   76:5.3M
 4/21/23  Apogee Enterprises, Inc.          10-K        2/25/23  114:12M
12/29/22  Apogee Enterprises, Inc.          10-Q       11/26/22   78:6.8M
 9/29/22  Apogee Enterprises, Inc.          10-Q        8/27/22   78:6.7M
 7/01/22  Apogee Enterprises, Inc.          10-Q        5/28/22   80:6.1M
 4/22/22  Apogee Enterprises, Inc.          10-K        2/26/22  114:12M
 1/06/22  Apogee Enterprises, Inc.          10-Q       11/27/21   83:7.4M
10/13/21  Apogee Enterprises, Inc.          S-8        10/13/21    4:87K                                    Donnelley … Solutions/FA
10/13/21  Apogee Enterprises, Inc.          S-8        10/13/21    5:230K                                   Donnelley … Solutions/FA
10/13/21  Apogee Enterprises, Inc.          S-8        10/13/21    4:137K                                   Donnelley … Solutions/FA
 9/30/21  Apogee Enterprises, Inc.          10-Q        8/28/21   81:6.9M

3 Previous Filings that this Filing References

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

 4/26/21  Apogee Enterprises, Inc.          8-K:5,9     4/20/21   15:351K                                   Donnelley … Solutions/FA
 1/16/20  Apogee Enterprises, Inc.          8-K:5,8,9   1/14/20   14:263K                                   Donnelley … Solutions/FA
 5/05/04  Apogee Enterprises, Inc.          10-K        2/28/04   12:1.7M                                   Donnelley … Solutions/FA

↑Top

Filing Submission 0000006845-21-000020 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Apogee Enterprises, Inc. – ‘10-Q’ for 5/29/21 – ‘EX-101.DEF’

On: Thursday, 7/1/21, at 3:18pm ET · For: 5/29/21 · Accession #: 6845-21-20 · File #: 0-06365

Quarterly Report — Form 10-QFiling Table of Contents

‘EX-101.DEF’ — XBRL Definitions — apog-20210529_def

This Exhibit is an XBRL XML File.

14 Subsequent Filings that Reference this Filing

3 Previous Filings that this Filing References

Quarterly Report — Form 10-Q

Filing Table of Contents