Motherwell captain Peter Hartley is among a number of players leaving Fir Park.
The defender leaves the Lanarkshire club after three years, having made 66 appearances.
His departure is followed by goalkeeper Mark Gillespie and fullback Richard Tait, upon the expiry of their contracts.
Also leaving from the Motherwell first team squad are Rohan Ferguson, Christian Ilic, youngster Adam Livingstone and Christy Manzinga.
Loan players Rolando Aarons, Mikael Ndjoli and Mark O’Hara return to their respective parent clubs Newcastle United, AFC Bournemouth and Peterborough United.
Manager Stephen Robinson said: “I’d like to thank every player who is leaving for their efforts during their time at the club
“They leave us with our best wishes for the future.”