<SEC-DOCUMENT>0001104659-21-120302-index.html : 20210928
<SEC-HEADER>0001104659-21-120302.hdr.sgml : 20210928
<ACCEPTANCE-DATETIME>20210928170959
ACCESSION NUMBER:		0001104659-21-120302
CONFORMED SUBMISSION TYPE:	SUPPL
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20210928
DATE AS OF CHANGE:		20210928
EFFECTIVENESS DATE:		20210928

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DENISON MINES CORP.
		CENTRAL INDEX KEY:			0001063259
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS METAL ORES [1090]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SUPPL
		SEC ACT:		
		SEC FILE NUMBER:	333-258939
		FILM NUMBER:		211288162

	BUSINESS ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1
		BUSINESS PHONE:		(416) 979-1991

	MAIL ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL URANIUM CORP
		DATE OF NAME CHANGE:	19980603
</SEC-HEADER>
<DOCUMENT>
<TYPE>SUPPL
<SEQUENCE>1
<FILENAME>tm2128237d1_suppl.htm
<DESCRIPTION>SUPPL
<TEXT>
Document 1 - file: tm2128237d1_suppl.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>tm2128237d1_supplsp01img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm2128237d1_supplsp01img001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm2128237d1_supplsp2img01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm2128237d1_supplsp2img01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm2128237d1_supplsp4img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm2128237d1_supplsp4img001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>tm2128237d1_supplsp5img1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: tm2128237d1_supplsp5img1.jpg

</DOCUMENT>
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