Gaelic games were played in the parish from 1909 by a team called St. Olcan's, but St. Mary's GAC was founded on
St Patrick's Day 1943. Initially focusing on
hurling, Gaelic football later became the main sport. Their current grounds at Dreen (in the countryside to the south of Rasharkin village) were built in 1980–83; a second pitch, the Jamesie McLernon Memorial Pitch, was added in 2000. A Rasharkin player, coach and club official, Gerry (Gearóid) Dalrymple, was murdered by the
Ulster Defence Association (UDA) in the
1993 Castlerock killings. The ladies' football team was founded in 1995, and in 1998 won the club's only county senior title. Rasharkin Camogie Club were integrated into the club in 2010. ==Honours==