    <SEC-DOCUMENT>0001097362-21-000031-index.html : 20211104
    <SEC-HEADER>0001097362-21-000031.hdr.sgml : 20211104
    <ACCEPTANCE-DATETIME>20211103180911
    ACCESSION NUMBER:		0001097362-21-000031
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		8
    CONFORMED PERIOD OF REPORT:	20210930
    FILED AS OF DATE:		20211104
    DATE AS OF CHANGE:		20211103

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SUN LIFE FINANCIAL INC
    		CENTRAL INDEX KEY:			0001097362
    		STANDARD INDUSTRIAL CLASSIFICATION:	LIFE INSURANCE [6311]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			Z4
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15014
    		FILM NUMBER:		211376976

    	BUSINESS ADDRESS:
    		STREET 1:		SUN LIFE ASSURANCE CO OF CANADA
    		STREET 2:		ONE YORK STREET
    		CITY:			TORONTO
    		STATE:			A6
    		ZIP:			M5J 0B6
    		BUSINESS PHONE:		4169794800

    	MAIL ADDRESS:
    		STREET 1:		SUN LIFE ASSURANCE CO OF CANADA
    		STREET 2:		ONE YORK STREET
    		CITY:			TORONTO
    		STATE:			A6
    		ZIP:			M5J 0B6

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SUN LIFE FINANCIAL SERVICES INC
    		DATE OF NAME CHANGE:	20030702

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SUN LIFE FINANCIAL SERVICES OF CANADA INC
    		DATE OF NAME CHANGE:	20000224
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
    <FILENAME>q32021form6-kwrap3sharehol.htm
    <DESCRIPTION>6-K
    <TEXT>
    Document 1 - file: q32021form6-kwrap3sharehol.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q32021shareholdersreport.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: q32021shareholdersreport.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>q32021certificationinterim.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: q32021certificationinterim.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>q32021earningscoveragerati.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: q32021earningscoveragerati.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>m21-009xquarterlyreportq3_.jpg
    <TEXT>
    Document 5 - file: m21-009xquarterlyreportq3_.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>m21-009xquarterlyreportq3_a.jpg
    <TEXT>
    Document 6 - file: m21-009xquarterlyreportq3_a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>strain-signatureenhanceda.jpg
    <TEXT>
    Document 7 - file: strain-signatureenhanceda.jpg

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

    </DOCUMENT>
    </SEC-DOCUMENT>