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                                  UNITED STATES
                       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) July 20, 2006

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

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

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

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


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         (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities
     Act (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange
     Act (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))

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ITEM 2.02.  RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

         On July 20, 2006, 2006, BancFirst Corporation announced its results of
operations for the quarter ended June 30, 2006. 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.

ITEM 9.01.  FINANCIAL STATEMENTS AND EXHIBITS.

     (d)    Exhibits.

     EXHIBIT NO.   DESCRIPTION
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     99.1          Press Release, dated July 20, 2006, issued by BancFirst
                   Corporation.



                                   SIGNATURES

      Pursuant to the requirements of the Securities 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
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                                                        (Registrant)


Date: July 20, 2006                                     /s/ Joe T. Shockley, Jr.
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                                                        (Signature)
                                                        Joe T. Shockley, Jr.
                                                        Executive Vice President
                                                        Chief Financial Officer