Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the Registration Statement (Form S-8) of PolyOne Corporation pertaining to the PolyOne Corporation 2010 Equity and Performance Incentive Plan of our report dated February 18, 2010, with respect to the financial statements of the SunBelt Chlor Alkali Partnership included in the Annual Report (Form 10-K) of PolyOne Corporation for the year ended December 31, 2009, filed with the Securities and Exchange Commission.
/s/ ERNST & YOUNG LLP
Cleveland, Ohio
May 12, 2010
May 12, 2010