Roman Catholic Diocese of Derry

Diocese of Derry Dioecesis Derrienus Deoise Dhoire
St Eugene's Cathedral viewed from the walls of Derry
Location
Country	Mostly in Northern Ireland, and partly in the Republic of Ireland
Territory	Most of County Londonderry, some parishes in counties Tyrone and Antrim and County Donegal
Ecclesiastical province	Province of Armagh
Metropolitan	Archdiocese of Armagh
Coordinates	54°59′42″N 7°19′34″W / 54.995°N 7.326°W / 54.995; -7.326Coordinates: 54°59′42″N 7°19′34″W / 54.995°N 7.326°W / 54.995; -7.326
Statistics
Area	965 sq mi (2,500 km2)
Population - Total - Catholics	(as of 2013) 316,916 243,229 (76.7%)
Information
Denomination	Roman Catholic
Sui iuris church	Latin Church
Rite	Roman Rite
Cathedral	St Eugene's Cathedral, Derry
Patron saint	St Eugene and St Columba
Current leadership
Pope	Francis
Bishop	Donal McKeown
Metropolitan Archbishop	Eamon Martin
Emeritus Bishops	Séamus Hegarty Bishop Emeritus of Derry (1994-2011) Francis Lagan Auxiliary Emeritus to the Bishop of Derry (1988-2010)
Map
Website
derrydiocese.org

The Diocese of Derry (Irish: Deoise Dhoire) is a diocese in the north of Ireland. It is in the ecclesiastical province of Armagh. The diocese was established in the year 1158.The diocese consists of almost fifty parishes and some number of religious congregations have houses in various parts of the diocese.

The Cathedral Church of the diocese is St Eugene's Cathedral. Nearby is St Columba's Church, Long Tower. Schools in the diocese include: St Joseph's Boys' School, Thornhill College, St Columb's College, Lumen Christi College.

Derry contains most of County Londonderry, some parishes in counties Tyrone and Antrim and the Inishowen peninsula in County Donegal, and the parish of Lifford (Clonleigh) in East Donegal. As well as the city of Derry, the main towns are Buncrana, Coleraine, Lifford, Limavady, Maghera, Omagh and Strabane.

The following is a basic list of the post-Reformation Roman Catholic bishops and vicars apostolic.