Mark O'Keeffe

Mark O'Keeffe (born 13 September 1993) is an Irish-born American rugby union player, currently playing for the Chicago Hounds in Major League Rugby (MLR). His preferred position is centre or wing.

Early career O'Keeffe is from Dublin and attended St Michael's College, Dublin, playing in the 2013 Leinster Schools Cup final. He was a member of both Leinster's and Connacht's academies. He is qualified for the United States on residency grounds.

Professional career O'Keeffe first signed for Rugby United New York ahead of the 2019 Major League Rugby season. He remained with the team in 2020, however departed when the COVID-19 pandemic cancelled the season. He returned to the States to join Rugby ATL ahead of the 2021 season, before transferring to the Austin Gilgronis ahead of 2022. Following the Gilgronis' departure from competition, he was picked up by the Chicago Hounds ahead of the 2023 season.

O'Keeffe made his debut for the United States national team in November 2024, debuting against Tonga. He scored his first try in the Eagles next fixture against Spain.