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                                  EXHIBIT 31.1

                               CCFNB BANCORP, INC.

                          CEO CERTIFICATION PURSUANT TO
                               SECTION 302 OF THE
                           SARBANES-OXLEY ACT OF 2002

I, Lance O. Diehl, certify that:

1.   I have reviewed this annual report on Form 10-K of CCFNB Bancorp, Inc. for
     the year ended December 31, 2006.

2.   Based on my knowledge, this annual report does not contain any untrue
     statement of a material fact or omit to state a material fact necessary to
     make the statements made, in light of the circumstances under which such
     statements were made, not misleading with respect to the period covered by
     this annual report.

3.   Based on my knowledge, the financial statements, and other financial
     information included in this annual report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and for, the periods presented in this annual report;

4.   The registrant's other certifying officers and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     (a) designed such disclosure controls and procedures to ensure that
     material information relating to the registrant, including its consolidated
     subsidiaries, is made known to us by others within those entities,
     particularly during the period in which this annual report is being
     prepared;

     (b) evaluated the effectiveness of the registrant's disclosure controls and
     procedures as of December 31, 2006 prior to the filing date of this annual
     report, and

     (c) presented in this annual report our conclusions about the effectiveness
     of the disclosure controls and procedures based on our evaluation as of
     December 31, 2006;

5.   The registrant's other certifying officers and I have disclosed, based on
     our most recent evaluation, to the registrant's auditors and the audit
     committee of registrant's board of directors (or persons performing the
     equivalent functions):

     (a) all significant deficiencies in the design or operation of internal
     controls which could adversely affect the registrant's ability to record,
     process, summarize and report financial data and have identified for
     registrant's auditors any material weaknesses in internal controls; and

     (b) any fraud, whether or not material, that involves management or other
     employees who have a significant role in the registrant's internal
     controls; and

6.   The registrant's other certifying officers and I have indicated in this
     annual report whether there were significant changes in internal controls
     or in other factors that could significantly affect internal controls
     subsequent to December 31, 2006, including any corrective actions with
     regard to significant deficiencies and material weaknesses.


Date: March 8, 2007                     /s/ Lance O. Diehl
                                        ----------------------------------------
                                        Lance O. Diehl
                                        Chief Executive Officer


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