Indicate by check mark whether the registrant files
or will file annual reports under cover Form 20-F or Form
40-F.
Form
20-F ☐ Form 40-F ☒
Indicate by check mark if the registrant is submitting the
Form 6-K in paper as permitted by Regulation S-T Rule
101(b)(1): ☐
Indicate by check mark if the registrant is submitting the
Form 6-K in paper as permitted by Regulation S-T Rule
101(b)(7): ☐
INCORPORATION BY REFERENCE
Exhibit 99.1 to
this Form 6-K of Denison Mines Corp. is hereby incorporated by
reference to its Registration Statement on Form F-10 (File No.
333-258939), as amended or
supplemented.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act
of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly
authorized.