    <SEC-DOCUMENT>0001654954-20-000457-index.html : 20200115
    <SEC-HEADER>0001654954-20-000457.hdr.sgml : 20200115
    <ACCEPTANCE-DATETIME>20200115123654
    ACCESSION NUMBER:		0001654954-20-000457
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		19
    CONFORMED PERIOD OF REPORT:	20200115
    FILED AS OF DATE:		20200115
    DATE AS OF CHANGE:		20200115

    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:		20527830

    	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>6-K
    <SEQUENCE>1
    <FILENAME>form6k.htm
    <DESCRIPTION>FORM 6-K DATED JANUARY 15, 2020
    <TEXT>
    Document 1 - file: form6k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>fourthamendedandrestatedc.htm
    <DESCRIPTION>AMENDED AND RESTATED CREDIT FACILITY
    <TEXT>
    Document 2 - file: fourthamendedandrestatedc.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>firstamendingagreement-ex.htm
    <DESCRIPTION>FIRST AMENDING AGREEMENT
    <TEXT>
    Document 3 - file: firstamendingagreement-ex.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>secondamendingagreement-c.htm
    <DESCRIPTION>SECOND AMENDING AGREEMENT
    <TEXT>
    Document 4 - file: secondamendingagreement-c.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.4
    <SEQUENCE>5
    <FILENAME>thirdamendingagreement.htm
    <DESCRIPTION>THIRD AMENDING AGREEMENT
    <TEXT>
    Document 5 - file: thirdamendingagreement.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.5
    <SEQUENCE>6
    <FILENAME>fourthamendingagreement-e.htm
    <DESCRIPTION>FOURTH AMENDING AGREEMENT
    <TEXT>
    Document 6 - file: fourthamendingagreement-e.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.6
    <SEQUENCE>7
    <FILENAME>fifthamendingagreement.htm
    <DESCRIPTION>FIFTH AMENDING AGREEMENT
    <TEXT>
    Document 7 - file: fifthamendingagreement.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>fourthamendedandrestatedc000.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 8 - file: fourthamendedandrestatedc000.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>fourthamendedandrestatedc001.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 9 - file: fourthamendedandrestatedc001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>fourthamendedandrestatedc002.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 10 - file: fourthamendedandrestatedc002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>fourthamendedandrestatedc003.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 11 - file: fourthamendedandrestatedc003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>fourthamendedandrestatedc004.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 12 - file: fourthamendedandrestatedc004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>fourthamendedandrestatedc005.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 13 - file: fourthamendedandrestatedc005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>fourthamendedandrestatedc006.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 14 - file: fourthamendedandrestatedc006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>fourthamendedandrestatedc007.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 15 - file: fourthamendedandrestatedc007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>fourthamendedandrestatedc008.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 16 - file: fourthamendedandrestatedc008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>fourthamendedandrestatedc009.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 17 - file: fourthamendedandrestatedc009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>fourthamendedandrestatedc010.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 18 - file: fourthamendedandrestatedc010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>fourthamendedandrestatedc011.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 19 - file: fourthamendedandrestatedc011.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>