Naomh Mearnóg is a Gaelic Athletic Association club in the parish of Portmarnock, County Dublin, Ireland. The club was founded in 1975 and now fields a total of 35 teams in football, hurling, camogie and ladies' football. These include 3 adult football teams, 3 adult hurling teams, 2 adult camogie teams and 2 adult ladies' football teams. They are one of only two Dublin clubs who compete at senior level in all four codes.