Coolmine Rugby Football club is a rugby union club located at Ashbrook, near the suburbs of Castleknock and Blanchardstown in west County Dublin, Ireland, playing in Division 2A of the Leinster League.

The club originally played matches on pitches rented from the local council and used Coolmine Sports Complex as its main facility.

In 1991, the club was promoted to the Junior 1 league and work began on a new clubhouse facility.

The new clubhouse was officially opened by then President of Ireland, Mary Robinson, in 1993.

Coolmine RFC's senior team currently plays in Division 2A of the Leinster League as a junior rugby club.