    <SEC-DOCUMENT>0001437749-21-008985-index.html : 20210415
    <SEC-HEADER>0001437749-21-008985.hdr.sgml : 20210415
    <ACCEPTANCE-DATETIME>20210415113833
    ACCESSION NUMBER:		0001437749-21-008985
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		7
    CONFORMED PERIOD OF REPORT:	20210528
    FILED AS OF DATE:		20210415
    DATE AS OF CHANGE:		20210415

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BankFinancial CORP
    		CENTRAL INDEX KEY:			0001303942
    		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-51331
    		FILM NUMBER:		21827769

    	BUSINESS ADDRESS:
    		STREET 1:		60 NORTH FRONTAGE ROAD
    		CITY:			BURR RIDGE
    		STATE:			IL
    		ZIP:			60527
    		BUSINESS PHONE:		(800) 894-6900

    	MAIL ADDRESS:
    		STREET 1:		60 NORTH FRONTAGE ROAD
    		CITY:			BURR RIDGE
    		STATE:			IL
    		ZIP:			60527
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>bfin20200508_def14a.htm
    <DESCRIPTION>FORM DEF 14A
    <TEXT>
    Document 1 - file: bfin20200508_def14a.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>jjbsignaturea01a05.jpg
    <TEXT>
    Document 3 - file: jjbsignaturea01a05.jpg

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>proxycd01.jpg
    <TEXT>
    Document 5 - file: proxycd01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>proxycd02.jpg
    <TEXT>
    Document 6 - file: proxycd02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>zmqmfsllddef14aimg.jpg
    <TEXT>
    Document 7 - file: zmqmfsllddef14aimg.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>