U. S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 16, 2003

                              BANCFIRST CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

           OKLAHOMA                  0-14384                     73-1221379
           --------                  -------                     ----------
(State or other jurisdiction of    (Commission                (I.R.S. Employer
        incorporation)             File Number)              Identification No.)

       101 North Broadway, Oklahoma City, Oklahoma                 73102
       -------------------------------------------                 -----
          (Address of principal executive offices)               (Zip Code)

Registrant's telephone number, including area code  (405) 270-1086


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Item 9. Regulation FD Disclosure.

      On October  16,  2003,  BancFirst  Corporation  announced  its  results of
operations for the quarter ended September 30, 2003. A copy of the related press
release  is being  filed as  Exhibit  99.1 to this Form 8-K and is  incorporated
herein by reference in its entirety.

                                   SIGNATURES

      Pursuant to the  requirements  of the Securities and Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                                  BANCFIRST CORPORATION
                                                       (Registrant)

Date  October 16, 2003                            /s/ Randy P. Foraker
                                                  ------------------------------
                                                         (Signature)
                                                  Randy P. Foraker
                                                  Senior Vice President and
                                                  Controller; Assistant
                                                  Secretary/Treasurer
                                                  (Principal Accounting
                                                  Officer)

                                  Exhibit Index

Exhibit Number

99.1     Press Release, dated October 16, 2003, issued by BancFirst Corporation.


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