EXHIBIT 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of PolyOne Corporation (the
"Company") for the period ended December 31, 2004, as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), I, Thomas A.
Waltermire, President and Chief Executive Officer of the Company, do hereby
certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(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
     as of the dates and for the periods expressed in the Report.


/s/ Thomas A. Waltermire
---------------------------------------
Thomas A. Waltermire
President and Chief Executive Officer
March 4, 2005

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.