Dioceses and Archdioceses are ecclesiastical jurisdictions under the leadership of a Bishop or an Archbishop.

Eparchies and the Archeparchy are ecclesiastical jurisdictions under the leadership of a Bishop or an Archbishop (also called an Eparch or an Archeparch) of an Eastern Catholic Church.

Pastoral Regions: West / Ontario / Quebec / Atlantic
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Diocese
Website
Amos
http://www.diocese-amos.org
Baie-Comeau
http://www.diocese-bc.net
Chicoutimi
http://www.evechedechicoutimi.qc.ca
Gaspé
http://www.diocesegaspe.org/
Gatineau
http://www.diocesegatineau.org
Joliette
http://www.diocesedejoliette.org
Mont-Laurier
http://www.dioceseml.com/
Montréal - Maronite Catholic Eparchy of Canada
http://www.maronites.ca
Montréal
http://diocesemontreal.org
Montréal - Greek-Melkite Catholic Eparchy of Canada
http://www.melkitecanada.org
Nicolet
http://www.diocesenicolet.qc.ca
Pembroke
http://www.pembrokediocese.com
Québec
http://www.ecdq.org/
Rimouski
http://www.dioceserimouski.com/
Rouyn-Noranda
http://www.diocese-rouyn-noranda.org
Sainte-Anne-de-la-Pocatière
http://www.diocese-ste-anne.net
Saint-Hyacinthe
http://www.diocese-st-hyacinthe.qc.ca
Saint-Jean-Longueuil
http://www.dsjl.org
Saint-Jérôme
http://www.diocesestj.ca
Sherbrooke
http://www.diocesedesherbrooke.org
Trois-Rivières
http://www.diocese-trois-rivieres.org
Valleyfield
http://www.diocesevalleyfield.org