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
PRINT THIS LIST
Diocese
Website
Alexandria-Cornwall
http://www.alexandria-cornwall.ca
Sault Ste-Marie
http://www.dioceseofsaultstemarie.org
Calgary
http://www.calgarydiocese.ca/
Mississauga - Syro-Malabar Exarchate of Canada
www.syromalabarcanada.org
Toronto - Mar Addai Chaldean Catholic Eparchy of Canada
Hamilton
http://www.hamiltondiocese.com
Hearst
http://www.hearstdiocese.com/
Kingston
http://www.romancatholic.kingston.on.ca
London
http://www.dol.ca
Moosonee
Ottawa
http://www.catholicottawa.ca/
Pembroke
http://www.pembrokediocese.com
Peterborough
http://www.peterboroughdiocese.org
St. Catharines
http://www.saintcd.com
Thunder Bay
http://www.dotb.ca
Timmins
http://www.dioctims.ca
Toronto
http://www.archtoronto.org
Toronto and Eastern Canada - Ukrainian Catholic Eparchy
http://www.ucet.ca
Toronto Eparchy of Saints Cyril and Methodius of Slovaks of the Byzantine Rite in Canada