Castlerahan is a Gaelic football club from Ballyjamesduff, County Cavan, Ireland.

The club was founded in its current state in 1961, Ballyjamesduff and Castlerahan fielding separate teams prior to then.

[3] Castlerahan lost further finals to neighbours Ramor United after a replay in 2016,[4] and to Cavan Gaels again in 2017.

[6] Castlerahan successfully defended their title in 2019 by defeating Ramor United.

[7] After being relegated in 2021,[8] Castlerahan won the 2022 Intermediate Championship title to seal a quick return to the senior grade.