Diarmuid O'Máthúna's

Diarmuid Ó Mathúna's is a Gaelic Athletic Association club in Castletown-Kinneigh, County Cork, fielding both hurling and Gaelic football teams in the Carbery division.

In 2008 the club reached its first county final, losing to Dripsey in the Cork Junior Hurling Championship decider. Home games are played at Coppeen.