Cortoon are one of the oldest clubs in the county, and are unique in that they are the second senior football team in the one parish in Galway. Cortoon is a half parish of Tuam and with Tuam Stars , Cortoon achieved Senior status in the early seventies in a team powered by Tommy Joe Gilmore and Mickey Rooney, they managed to reach the semi finals on two occasions, losing to Caltra and Milltown. They then dropped again from senior status twice, but successfully fought hard to regain senior status.

2008 proved to be a memorable year in the history of Cortoon football in which they reached their first Senior Football Final, and played Corofin in the decider. However, experience won through for Corofin as they won by 3 points in a tightly contested final, 0-08 to 0-05.

Notable players:

Derek Savage, a key part of Galway's 1998 and 2001 All-Ireland Football triumphs, All star award in 2001

Tommy Joe Gilmore voted centre half-back on the Galway "Team Of The Millennium". Played in 4 All Ireland Finals. All star Award in 1972 and 1973

Mickey Rooney, winner All Ireland Minor 1970,  All Ireland u21 Championship with Galway in 1972, played in 4 All Ireland Finals at the Senior level in the early 70's

Michael Martin, All-Ireland Minor medal winner with Galway in 2007.

Adrian Varley, Paul Varley, Cathal Mulryan winners All Ireland u21 Championship with Galway in 2013

Frank Rooney, winner Minor All Ireland in 1976.