Archdiocese of Ottawa–Cornwall

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Archdiocese of Ottawa–Cornwall

Overview
The Archdiocese of Ottawa–Cornwall is a Catholic archdiocese in Ontario, Canada. It is the main church authority for the region and the metropolitan see of its ecclesiastical province, which includes the suffragan dioceses of Hearst–Moosonee, Pembroke, and Timmins. The cathedral is Notre-Dame Cathedral Basilica in Ottawa, and the archdiocese follows the Latin Church and the Roman Rite.

Territory and people
- Location: City of Ottawa, Prescott and Russell, the eastern part of Stormont, Dundas and Glengarry, and two parishes in Lanark County.
- Parishes: 129
- Catholics: about 472,000 (as of 2023)
- Structure: 129 diocesan priests, 103 religious priests, 379 women religious, 110 religious brothers, and 100 permanent deacons
- Headquarters: 1209 Michael St N, Ottawa, ON K1J 7T2
- Website: ottawacornwall.ca

History
- The area started as the Diocese of Bytown in 1847.
- It was renamed the Diocese of Ottawa in 1860.
- It became an archdiocese in 1886.
- On May 6, 2020, Pope Francis merged the Archdiocese of Ottawa with the Diocese of Alexandria-Cornwall to form the Archdiocese of Ottawa–Cornwall.

Leadership
- Archbishop: Marcel Damphousse (since 2020)
- Previous archbishop: Terrence Prendergast (2007–2020)
- Auxiliary bishop: Yvan Mathieu (since 2022)

Cathedral and patron
- Cathedral: Notre-Dame Cathedral Basilica
- Patron saint: Saint Joseph

Other notes
- Denomination: Catholic Church, Latin Church, Roman Rite
- The archdiocese is part of the Ecclesiastical Province of Ottawa–Cornwall.