    <SEC-DOCUMENT>0000875357-21-000018-index.html : 20210325
    <SEC-HEADER>0000875357-21-000018.hdr.sgml : 20210325
    <ACCEPTANCE-DATETIME>20210325102017
    ACCESSION NUMBER:		0000875357-21-000018
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		10
    CONFORMED PERIOD OF REPORT:	20201231
    FILED AS OF DATE:		20210325
    DATE AS OF CHANGE:		20210325

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BOK FINANCIAL CORP
    		CENTRAL INDEX KEY:			0000875357
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				731373454
    		STATE OF INCORPORATION:			OK
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37811
    		FILM NUMBER:		21770580

    	BUSINESS ADDRESS:
    		STREET 1:		BANK OF OKLAHOMA TOWER
    		STREET 2:		BOSTON AVENUE AT SECOND STREET
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74172
    		BUSINESS PHONE:		9185886000

    	MAIL ADDRESS:
    		STREET 1:		BANK OF OKLAHOMA TOWER
    		STREET 2:		P O BOX 2300
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74192

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BOK FINANCIAL CORP ET AL
    		DATE OF NAME CHANGE:	19950626
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>a20201231bokfproxy.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: a20201231bokfproxy.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>bokfcorp-stkx2clr1a.jpg
    <TEXT>
    Document 2 - file: bokfcorp-stkx2clr1a.jpg

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

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>chart-3f09caa4e664456ba381a.jpg
    <TEXT>
    Document 5 - file: chart-3f09caa4e664456ba381a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>chart-5347bab33e5f4010afd1a.jpg
    <TEXT>
    Document 6 - file: chart-5347bab33e5f4010afd1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>chart-95a0f248add7433f8e01a.jpg
    <TEXT>
    Document 7 - file: chart-95a0f248add7433f8e01a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>image2a061a.jpg
    <TEXT>
    Document 8 - file: image2a061a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image3a061a.jpg
    <TEXT>
    Document 9 - file: image3a061a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>image4a061a.gif
    <TEXT>
    Document 10 - file: image4a061a.gif

    </DOCUMENT>
    </SEC-DOCUMENT>