Senior Debut: v Edinburgh, September 2012, Murrayfield
Previous Club: Clontarf RFC, Dolphin RFC, Garryowen FC
Honours: Ireland Club XV
The Limerick born UCC graduate came straight into the Munster squad on a Development Contract in Summer 2012 after impressive displays with Clontarf in the Ulster Bank League and equally impressive performances with the Ireland Club XV side.
A product of Crescent College Comprehensive and Garryowen, O'Mahony is a former member of the Munster Rugby Academy and returned to the Munster set-up in April 2012 when he featured for the Munster A's in the British and Irish Cup winning semi final and final stages.
His brother Ronan, a winger, joined him in the senior squad at the start of the 2013/14 season.
Captained Munster A for the first time at the start of 2014 and led the side to a bonus-point win against Nottingham at St. Mary's RFC.
Made his first Thomond Park appearance for Munster as a starter against Cardiff in February.
Signed a one-year development contract extension for the 2014/15 season and starts the pre-season rehabbing after undergoing surgery on his knee in May 2014.
Returned to competitive action in October, lining out for Munster A against Moseley, Worcester Warriors and Nottingham.
After sustaining an injury on his right ankle in November, he underwent surgery and has been ruled out for the immediate future.