Carney has been linked with Munster in the past and today committed to the side on a two year contract.
Commenting on his move, the Cork born, Clongowes Wood College educated, " It's really a tremendous honour to be signed up by a club like Munster. My first objective is to get into that Munster side and become a player that the players want in the team.
" To do that I know I have a lot of hard ahead of me. But, I'm prepared to knuckle down and see how things progress.
"Knowing the history of the club it is a huge honour, it really is, definitely the recent history has been tremendous. I hope I can become a part of a winning successful side here and yes I am thrilled to be involved with a side like Munster and I'm looking forward to it all."
Munster coach Declan Kidney said, "Given the injury situation in relation to Shaun Payne, Mossie Lawlor and Anthony Horgan, I think it's particularly opportune to acquire someone of Brian's stature and experience for the end of season matches in Magners League and Heineken Cup."