Exhibit 99.1

                            CERTIFICATION PURSUANT TO
                               SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. 1350, the undersigned officer of KeyCorp (the "Company"),
hereby certifies that the Company's Quarterly Report on Form 10-Q for the
quarter ended March 31, 2003 (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
Company.

May 12, 2003
                                                       /s/ Henry L. Meyer III
                                                       ------------------------
                                                       Henry L. Meyer III
                                                       Chairman, President and
                                                       Chief Executive Officer

A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.