BOK FINANCIAL CORPORATION EXHIBIT 23 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference of our report dated January 27, 1997, with respect to the consolidated financial statements of BOK Financial Corporation and subsidiaries incorporated by reference in the annual report (Form 10-K) for the year ended December 31, 1996, in the following registration statements: Registration Statement (Form S-8, No. 33-44121) pertaining to the Reoffer Prospectus of the Bank of Oklahoma Master Thrift Plan and Trust Agreement. Registration Statement (Form S-8, No. 33-44122) pertaining to the Reoffer Prospectus of the BOK Financial Corporation 1991 Special Stock Option Plan. Registration Statement (Form S-8, No. 33-55312) pertaining to the Reoffer Prospectus of the BOK Financial Corporation 1992 Stock Option Plan. Registration Statement (Form S-8, No. 33-70102) pertaining to the Reoffer Prospectus of the BOK Financial Corporation 1993 Stock Option Plan. Registration Statement (Form S-8, No. 33-79834) pertaining to the Reoffer Prospectus of the BOK Financial Corporation 1994 Stock Option Plan. Registration Statement (Form S-8, No. 33-79836) pertaining to the Reoffer Prospectus of the BOK Financial Corporation Directors' Stock Compensation Plan. /s/ Ernst & Young LLP Tulsa, Oklahoma March 27, 1997