FirstMerit (FMER) 10-Q 2012 Q3 Quarterly report

Exhibit 32.1

CERTIFICATION PURSUANT TO SECTION 906 OF SARBANES-OXLEY 2002

Pursuant to 18 U.S.C. Section 1350, each of the undersigned officer of FirstMerit Corporation (the “Corporation”), hereby certifies that, to such officer's knowledge, the Corporation's Form 10-Q to which this certificate is attached (the "Report") fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation as of the dates and for periods presented in the Report. The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

Dated:	November 2, 2012	By:	/s/ Paul G. Greig
		Chairman, President and Chief Executive Officer

A signed original of this written statement has been provided to FirstMerit Corporation and will be retained by it and furnished to the Securities and Exchange Commission or its staff upon request.