MK Dons have confirmed Sean O'Hanlon, Danny Woodwards, Jude Stirling and Stuart Searle are set to leave the club.
Manager Karl Robinson, who saw his side knocked out of the play-offs by Peterborough on Thursday night, thanked the players for their service.
"Sean O'Hanlon has been a phenomenal servant to this football club. He is a great character and has played a huge part in writing successful chapters into the history books at the club. Telling Sean he was a free agent was one of the hardest things I have had to do as a manager," Robinson told the club's official website.
"Jude Stirling has been another good servant and he is a fans favourite. Jude's passion and commitment can never be questioned; he has always been willing to play in any position for the team.
"Danny Woodwards has made a great contribution during his two years with the club. Stuart Searle has been a fantastic number two goalkeeper and provided great support to both Willy Gueret and David Martin over the years."