Exhibit 99.4
KPMG LLP
Bay Adelaide Centre,
333 Bay Street, Suite 4600
Toronto, ON M5H 2S5
Telephone (416) 777-8500
Fax (416) 777-3969
www.kpmg.ca
Consent of Independent Registered Public Accounting Firm
The Board of Directors
Denison Mines Corp.
We consent to the use of:
| ● | our reports dated March 10, 2026, on the consolidated financial statements of Denison Mines Corp (the “Entity”), which comprise the consolidated statements of financial position as of December 31, 2025 and 2024, the related consolidated statements of loss and comprehensive loss, changes in equity, and cash flow for each of the years then ended, and the related notes (collectively the “consolidated financial statements”), and |
| ● | our report dated March 10, 2026 on the effectiveness of internal control over financial reporting as of December 31, 2025 |
each of which is included in the Annual Report on Form 40-F of the Entity for the fiscal year ended December 31, 2025.
We also consent to the incorporation by reference of such reports in the Registration Statements (File No. 333-287365, No. 333-224641, No. 333-190121, No. 333-148915, No. 333-48174) on Form S-8 of the Entity.
/s/ KPMG LLP
Chartered Professional Accountants, Licensed Public Accountants
March 30, 2026
Toronto, Canada