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Diocese of Ottawa–Cornwall
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Published by Catholic Social Ventures · compiled from public diocesan records · exported …
The Archdiocese of Ottawa-Cornwall is a Latin Church metropolitan archdiocese formed in 2020 by the amalgamation of the Archdiocese of Ottawa (founded 1847 as Bytown, elevated 1886) and the Diocese of Alexandria-Cornwall. Its suffragan sees are Hearst-Moosonee, Pembroke, and Timmins.
- Archbishop
- Marcel Damphousse
- Latin name
- Ottavien(sis)-Cornubien(sis)
- Erected
- 6 May 2020 (origins 1847)
- Cathedral
- Notre-Dame Cathedral Basilica
- Co-cathedral
- St. Finnan's Cathedral, Alexandria
- Patron
- Saint Joseph
- Rank
- Metropolitan See
- Rite
- Latin
- Province
- Ottawa-Cornwall
- Catholics
- 472,000
- Chancery
- Diocesan Centre, 200-1209 Michael Street N, Ottawa, ON k1j 7t2, Canada
- Telephone
- Tel. [613]738-5025
- [email protected]
Contact as printed in the Annuario Pontificio.
Neighbouring dioceses
- Military Ordinariate of Canada <1 km
- Diocese of Gatineau 1 km
- Ogdensburg US 82 km
- Diocese of Pembroke 120 km
- Diocese of Kingston 137 km
- Diocese of Saint-Jérôme–Mont-Laurier 138 km
Parishes near the see
- St. Patrick · Ottawa 1 km
- Dominican University College · Ottawa 1 km
- St. Paul’s University · Ottawa 1 km
- Soeurs de la Charité · Ottawa 1 km
- Annunciation of the Blessed Virgin Mary · Ottawa 1 km
- Blessed Sacrament, Ottawa · Ottawa 1 km
Official diocesan website →Wikipedia →Map →Linked data →
Sources: wikidata-p488,annuario · Annuario code 001002489 · ontology v0.3.2 · updated 2026-06-08