The Diocese of Clogher is a Roman Catholic diocese located in the north of Ireland. It covers parts of counties Monaghan, Fermanagh, and Tyrone. The diocese is part of the ecclesiastical province of Armagh and has a rich history dating back to the early Christian period. The diocese is governed by a bishop, currently Larry Duffy, who oversees the spiritual and administrative needs of the Catholic community in the region. The main cathedral of the diocese is St. Macartan's Cathedral, situated in Monaghan, which serves as a central place of worship and community activities.