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
Antigonish
http://www.antigonishdiocese.com/
Bathurst
http://www.diocesebathurst.com
Charlottetown
http://www.dioceseofcharlottetown.com
Corner Brook and Labrador
http://www.rcchurch.com
Edmundston
http://www.diocese-edmundston.ca
Grand Falls
http://www.rcdiocesegrandfalls.ca
Halifax-Yarmouth
http://www.halifaxyarmouth.org/
Moncton
http://www.diomoncton.ca
Saint John
http://www.dioceseofsaintjohn.org
St. John's
http://www.rcsj.org