Munster and the IRFU have confirmed out-half Ian Keatley has signed a new contract that will keep him at the province until 2017.
Munster also confirmed that Cian Bohane, Shane Buckley and Jack O'Donoghue have signed contracts.
There was no word, however, on the future of JJ Hanrahan, who has been linked with a move to Northampton Saints.
Development player Shane Buckley has signed a one-year contract extension and will stay with Munster until at least June next year. The Cork back-row forward made his Pro12 debut last September, and has been a constant in Munster British & Irish Cup campaigns over the past two seasons.
Bohane, a 23-year-old centre, has signed a one-year extension to his development contract, and will progress to a full contract at the start of the 2016/17 season.
He is currently recovering from a long-term injury after sustaining ligament damage against London Irish in the SEAT Challenge game last August.
Twenty-year-old back-rower O'Donoghue, currently an academy player, signed a three-year deal under which he advances to development status for season 2015/16 and full contract status from 2016/17.
Hooker Kevin O'Byrne, who joined the province at the start of the summer on a training contact, will remain until the end of the season on a development contract.
Munster head coach Anthony Foley said he was pleased to have signed the group of players, and said that Keatley, in particular, continued to flourish.
"We are extremely pleased that this group of players have committed their talents to the province," Foley said.
"Ian is into his fourth season with us and continues to grow, and impress.
"He leads by example with his commitment and attitude and we are fortunate to have him in our side.
"He showed great composure last week to kick in difficult conditions and like great tens before him he can certainly kick a drop-goal when needed."