EXHIBIT 32.1 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. 1350 In connection with the Form 10-K (the "Report") of Ferro Corporation (the "Company") for the period ending December 31, 2004, I, James F. Kirsch, Chairman and Chief Executive Officer of the Company, certify that: (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ James F. Kirsch - ------------------------------------- James F. Kirsch President and Chief Executive Officer Dated: March 31, 2006