Senior Debut: v Newport Gwent Dragons, April 2012, Rodney Parade
Club: Garryowen FC
School: Castletroy College
International Honours: Ireland U18; Ireland U19; Ireland U20
As a sub academy player O'Mahony made his Munster debut as a replacement against the Sale Sharks in the pre-season game in Musgrave Park in August '09.
He made the move up to the academy at the start of the 10/11 season and after completing his three years secured a development contract for season 2013/14, joining his older brother Barry in the senior set-up.
Ronan made his RaboDirect PRO12 debut scoring a try against Newport Gwent Dragons in April 2013 and was one of three academy players nominated for the Academy Player of the Year in May 2013.
O'Mahony burst in to the limelight when he scored a hat-trick against London Irish in the pre-season game in Musgrave Park and was subsequently named in Munster's Heineken Cup squad for 2013/14.
Scored six tries in Munster A's first six games in the B&I Cup in the 2013/14 season.
Captained Munster A for the first time when they beat Connacht Eagles 15-13 at the Sportsgrounds in February.
Signed a one-year development contract extension for the 2014/15 season.
Captained a Munster 7’s side at the Limerick World Club 7s Festival in Thomond Park, August 2014.