United States securities and exchange commission logo August 23, 2022 David Harlow President and Chief Executive Officer BancFirst Corporation 100 N. Broadway Ave. Oklahoma City, Oklahoma 73102 Re: BancFirst Corporation Form 10-K for the fiscal year ended December 31, 2021 Filed February 25, 2022 Form 10-Q for the quarterly period ended March 31, 2022 Filed May 6, 2022 File No. 000-14384 Dear Mr. Harlow: We have completed our review of your filings. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Finance