EXHIBIT 99.5  CERTIFICATION  REQUIRED BY RULE 13a-14(a)  OR RULE 15d-14(a)  I, Glenn J. Chamandy, certify that:        1 I have reviewed this Amendment No. 1 to the annual report on Form 40-F of Gildan Activewear Inc.;        2  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to  state a material fact necessary to make the statements made, in light of the circumstances under which  such statements were made, not misleading with respect to the period covered by this report;        3  Based on my knowledge, the financial statements, and other financial information included in this  report, fairly present in all material respects the financial condition, results of operations and cash flows  of the issuer as of, and for, the periods presented in this report;        4  The issuer’s other certifying officer and I are responsible for establishing and maintaining disclosure  controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal  control over financial reporting (as defined in Exchange Act Rules 13(a)-15(f) and 15(d)-15(f)) for the  issuer and have:             (a) Designed such disclosure controls and procedures, or caused such disclosure controls and  procedures to be designed under our supervision, to ensure that material information relating to  the issuer, including its consolidated subsidiaries, is made known to us by others within those  entities, particularly during the period in which this report is being prepared;             (b) Designed such internal control over financial reporting, or caused such internal control over  financial reporting to be designed under our supervision, to provide reasonable assurance  regarding the reliability of financial reporting and the preparation of financial statements for  external purposes in accordance with generally accepted accounting principles;             (c) Evaluated the effectiveness of the issuer’s disclosure controls and procedures and presented in  this report our conclusions about the effectiveness of the disclosure controls and procedures, as  of the end of the period covered by this report based on such evaluation; and             (d) Disclosed in this report any change in the issuer’s internal control over financial reporting that  occurred during the period covered by the annual report that has materially affected, or is  reasonably likely to materially affect, the issuer’s internal control over financial reporting; and        5  The issuer’s other certifying officer and I have disclosed, based on our most recent evaluation of  internal control over financial reporting, to the issuer’s auditors and the audit committee of the issuer’s  board of directors (or persons performing the equivalent functions):             (a) All significant deficiencies and material weaknesses in the design or operation of internal  control over financial reporting which are reasonably likely to adversely affect the issuer’s  ability to record, process, summarize and report financial information; and             (b) Any fraud, whether or not material, that involves management or other employees who have a  significant role in the issuer’s internal control over financial reporting.    Date: March 8, 2022    /s/ Glenn J. Chamandy   Name: Glenn J. Chamandy   Title: President and Chief Executive Officer
 CERTIFICATION  REQUIRED BY RULE 13a-14(a)  OR RULE 15d-14(a)  I, Rhodri J. Harries, certify that:        1 I have reviewed this Amendment No. 1 to the annual report on Form 40-F of Gildan Activewear Inc.;        2  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to  state a material fact necessary to make the statements made, in light of the circumstances under which  such statements were made, not misleading with respect to the period covered by this report;        3  Based on my knowledge, the financial statements, and other financial information included in this  report, fairly present in all material respects the financial condition, results of operations and cash flows  of the issuer as of, and for, the periods presented in this report;        4  The issuer’s other certifying officer and I are responsible for establishing and maintaining disclosure  controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal  control over financial reporting (as defined in Exchange Act Rules 13(a)-15(f) and 15(d)-15(f)) for the  issuer and have:             (a) Designed such disclosure controls and procedures, or caused such disclosure controls and  procedures to be designed under our supervision, to ensure that material information relating to  the issuer, including its consolidated subsidiaries, is made known to us by others within those  entities, particularly during the period in which this report is being prepared;             (b) Designed such internal control over financial reporting, or caused such internal control over  financial reporting to be designed under our supervision, to provide reasonable assurance  regarding the reliability of financial reporting and the preparation of financial statements for  external purposes in accordance with generally accepted accounting principles;             (c) Evaluated the effectiveness of the issuer’s disclosure controls and procedures and presented in  this report our conclusions about the effectiveness of the disclosure controls and procedures, as  of the end of the period covered by this report based on such evaluation; and             (d) Disclosed in this report any change in the issuer’s internal control over financial reporting that  occurred during the period covered by the annual report that has materially affected, or is  reasonably likely to materially affect, the issuer’s internal control over financial reporting; and        5  The issuer’s other certifying officer and I have disclosed, based on our most recent evaluation of  internal control over financial reporting, to the issuer’s auditors and the audit committee of the issuer’s  board of directors (or persons performing the equivalent functions):             (a) All significant deficiencies and material weaknesses in the design or operation of internal  control over financial reporting which are reasonably likely to adversely affect the issuer’s  ability to record, process, summarize and report financial information; and             (b) Any fraud, whether or not material, that involves management or other employees who have a  significant role in the issuer’s internal control over financial reporting.    Date: March 8, 2022      /s/ Rhodri J. Harries   Name: Rhodri J. Harries  Title: Executive Vice-President, Chief Financial and  Administrative Officer