Roman Catholic Diocese of Derry

Diocese of Derry Dioecesis Derriena Deoise Dhoire
St Eugene's Cathedral viewed from the walls of Derry
Location
Country	Northern Ireland 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; -7.326
Statistics
Area	965 sq mi (2,500 km2)
Population - Total - Catholics	(as of 2019) 336,741 252,347 (74.9%)
Information
Denomination	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
Vicar General	Paul McCafferty & Monsignor Andy Dolan
Map
Website
derrydiocese.org

The Diocese of Derry (Latin: Dioecesis Derriena; Irish: Deoise Dhoire) is a Latin Church diocese of the Catholic Church which straddles the international frontier between the Republic of Ireland & Northern Ireland. It is in the ecclesiastical province of Armagh. The diocese was established in the year 1158.^[1] 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.