Exhibit 5.1
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in this Registration Statement on Form F-10 of Denison Mines Corp. of our report dated March 5, 2020 relating to the consolidated financial statements and effectiveness of internal control over financial reporting, which appears in Exhibit 99.3 to Denison Mines Corp.’s Annual Report on Form 40-F for the year ended December 31, 2019, which is incorporated by reference in such Registration Statement.
(signed) “PricewaterhouseCoopers LLP”
Chartered Professional Accountant, Licensed Public Accountants
Toronto, Ontario, Canada
March 25, 2020
PricewaterhouseCoopers LLP
PwC Tower, 18 York Street, Suite 2600, Toronto, Ontario, Canada M5J 0B2
T: +1 416 863 1133, F: +1 416 365 8215, www.pwc.com/ca
“PwC” refers to PricewaterhouseCoopers LLP, an Ontario limited liability partnership.