CYM RFC is an Irish rugby team based in Terenure, Dublin who play in the Leinster Metro League.

The club was founded in 1924 by eight members of the Catholic Young Men's Society.

The Friendship Cup is an annual match between CYM and Haddington RFC.

Both teams have been playing this historic fixture since 1949, making it the longest running rivalry (and friendly) between an Irish and a Scottish club.

This Irish rugby union team article is a stub.