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    <ACCEPTANCE-DATETIME>20181221131406
    ACCESSION NUMBER:		0001654954-18-014219
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		67
    CONFORMED PERIOD OF REPORT:	20181221
    FILED AS OF DATE:		20181221
    DATE AS OF CHANGE:		20181221

    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:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33414
    		FILM NUMBER:		181248716

    	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
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    <FILENAME>denisonwaterburyni43-101r.htm
    <DESCRIPTION>TECHNICAL REPORT WITH AN UPDATED MINERAL RESOURCE ESTIMATE FOR THE WATERBURY LAKE PROPERTY, NORTHERN SASKATCHEWAN, CANADA, WITH AN EFFECTIVE DATE OF DECEMBER 21, 2018
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    <DESCRIPTION>QUALIFIED PERSON CONSENT - DONMEZ
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