Richard J. Collopy was an Irish international rugby union player.
Born in Dublin, Collopy was the son of 1890s Ireland forward George Collopy.
Collopy suffered severe injuries serving as a lieutenant in the Royal Air Force during World War I.
A strong scrummager, Collopy was a tireless forward and played for Bective Rangers. He joined his brother Willie in the Ireland front row in 1923 and was a regular fixture in the team for three Five Nations campaign, also appearing once against the All Blacks.