MK Dons defenders Mathias Doumbe and Tom Flanagan and striker Jabo Ibehre have agreed new deals at the club.
And young midfielders Harry Milton and George Baldock have been handed their first professional contracts by boss Karl Robinson.
Frenchman Doumbe, 31, and 28-year-old Ibehre have penned two-year deals.
Flanagan, Milton and Baldock, the brother of Dons striker Sam, have received 12-month contracts, with an option of a further year.
Doumbe played 51 times last season as the Dons reached the League One play-off semi-finals.
Since joining from Plymouth two years ago he has made 90 appearances playing at either right-back or centre-half and has scored five goals.
Ibehre scored five times in his 48 games last term, but was used predominantly as a substitute.
Flanagan impressed during a loan spell at Kettering and recorded two League One appearances during the campaign.
Doumbe told the club website: "What we did last year was really good but we have to do better this year.
"The most important year since I've been here was last year because of the way we were performing, everybody was playing with confidence and I think we can build on that."
Ibehre added: "Last season was my best and I really enjoyed it.
"Every year you want to get better and I thought last season was better than my first season and I want this season to be even better."
First team player Peter Leven and youngsters Charlie Collins and Adam Chicksen have yet to be handed new deals despite being out of contract in the summer.