Crystal Palace have released defensive trio Adrian Mariappa, Brede Hangeland and Paddy McCarthy, among 15 professionals.
Other senior professionals to have been released include two former Arsenal strikers in Emmanuel Adebayor and Marouane Chamakh.
In addition, a number of younger players are among those to have been released.
These include Reise Allassani, Andreas Breimyr, Connor Dymond, Spencer Forte, Matthew George, David Gregory, William Hoare, Chris Kettings, Oliver Pain and Christian Scales.