Kabiskopan Thunder Bay () yaiku sufragan Latin ing provinsi grejawi Metropolitan Kabiskopan Agung Toronto, ing Ontario, Kanadha. Tahta episkopal katedrale menika Katedral St. Patrick, ysig didedikasike marang St. Patrick, ing Thunder Bay, Ontario.

Referensi

Sumber lan pranala jaba 
 Diocese of Thunder Bay site
 GCatholic, with Google map & satellite photo
 

Thunder Bay