Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement of CNB Financial Corporation on Form S-8 pertaining to the CNB Financial Corporation 2009 Stock Incentive Plan of our report dated March 13, 2009 on the consolidated financial statements and effectiveness of internal control over financial reporting of CNB Financial Corporation, which report is incorporated by reference in Form 10-K for CNB Financial Corporation for the year ended December 31, 2008.

/s/ Crowe Horwath LLP

Crowe Horwath LLP

Cleveland, Ohio

June 12, 2009