July 22, 2025

VIA EDGAR

United States Securities and Exchange Commission

Division of Corporation Finance

100 F Street, N.E.

Washington, D.C. 20549

Re:  Request for Acceleration - DEFSEC Technologies Inc.

Registration Statement on Form F-1

Filed July 22, 2025

(SEC File No. 333-288827)

Ladies and Gentlemen:

Pursuant to Rule 461 promulgated under the Securities Act of 1933, as amended, DEFSEC Technologies Inc. (the "Company"), respectfully requests that the Commission accelerate the effectiveness of the above-referenced Registration Statement on Form F-1 (File No. 333-288827), and permit said Registration Statement to become effective at 5:30 p.m. (Eastern Time) on July 23, 2025, or as soon thereafter as practicable.

The Company hereby authorizes Nicholas Arruda, an attorney with our outside legal counsel, Dorsey & Whitney LLP, to orally modify or withdraw this request for acceleration.

Please contact Nicholas Arruda of Dorsey & Whitney LLP at (416) 367-7377 with any questions with respect to this request.