Quinn Roux heads a list of nine players confirmed to be leaving Connacht this summer.
The Ireland international lock declined a contract extension, and his place in the squad goes to Tongan international Leva Fifita.
Centre Sean O'Brien is moving to former European champions Exeter while Stephen Fitzgerald is retiring from rugby due to injury.
Conor Dean, Colm de Buitlear, Cillian Gallagher, Conor Kenny, Stephen Kerins and Paddy McAllister will also be departing the club.