St Fintans, Mountrath is a Gaelic Athletic Association hurling and gaelic football club in Mountrath, County Laois, Ireland.
The club colours are red and white and the club grounds are called St Fintans GAA Grounds.
The club is a senior hurling club and won its only Laois Senior Hurling Championship in 1942.
Mountrath has also won the Laois Intermediate Hurling Championship five times (1941, 1949, 1990, 1996 and 2001) and the Laois Junior Hurling Championship four times (1940, 1960, 1975 and 1989). Also in 1940, Mountrath won the Laois Minor Hurling Championship for the only time in its history.
Gaelic football is very much a secondary sport in the club but the club has one Laois Junior Football Championship to its credit, won in 1939. In 1996, St Fintans also won the Laois Junior "B" Football Championship.