St. Tiarnach's GFC is a historic community-based Gaelic Athletic Association club in Clones, Co. Monaghan, established in 1886. The club promotes Gaelic football, hurling, and camogie, serving as a central hub for sports and social activity. It is the home of St. Tiarnach's Park, which has hosted the majority of Ulster Senior Football Championship Finals since 1944, and is committed to developing facilities and fostering community spirit through youth development and local engagement.