List of the Roman Catholic dioceses of Ireland

The diocesan system of church government in Ireland is almost 900 years old. It was set up by the Synod of Rathbreasail in 1111 AD and modified by the Synod of Kells-Mellifont in 1152. The country is divided into four ecclesiastical provinces each headed by an archbishop. The provinces are in turn subdivided into suffragan dioceses each headed by a bishop. The only change in this system was the creation of the Diocese of Galway in 1831 following the abolition of the Wardenship of Galway.

List of Dioceses

• Archdiocese of Armagh
• Diocese of Ardagh
• Diocese of Clogher
• Diocese of Derry
• Diocese of Down and Connor
• Diocese of Dromore
• Diocese of Kilmore
• Diocese of Meath
• Diocese of Raphoe

• Archdiocese of Cashel and Emly
• Diocese of Cloyne
• Diocese of Cork and Ross
• Diocese of Kerry
• Diocese of Killaloe
• Diocese of Limerick
• Diocese of Waterford and Lismore

• Archdiocese of Dublin
• Diocese of Ferns
• Diocese of Kildare and Leighlin
• Diocese of Ossory

• Archdiocese of Tuam
• Diocese of Achonry
• Diocese of Clonfert
• Diocese of Elphin
• Diocese of Galway and Kilmacduagh
• Diocese of Killala

• The ancient Diocese of Kilfenora, in the ecclesiastical province of Cashel, has been administered by the Bishop of Galway, in the province of Tuam, since the late 19th century. The correct title is Bishop of Galway and Kilmacduagh and Apostolic Administrator of Kilfenora. The Diocese of Ross was merged with the Diocese of Cork in the 1950s.

Compare: List of Church of Ireland dioceses

External link

Dioceses of Ireland