Striker Chris Greenacre, 27, has been released by Stoke after making 75 league appearances in three seasons since joining from Mansfield.
Also released are young professionals Jermaine Palmer, Richard Keogh and Jay Denny - who have made just four first-team appearances between them.
However, Potters boss Tony Pulis has offered new contracts to defenders Gerry Taggart and Wayne Thomas.
Also offered new terms are keeper Ed de Goey and striker Gifton Noel-Williams.