Diocese of Thunder Bay Dioecesis Sinus Tonitralis | |
|---|---|
 | |
 Coat of Arms | |
| Location | |
| Country | Canada |
| Territory | Northern Ontario |
| Ecclesiastical province | Archdiocese of Toronto |
| Metropolitan | Thunder Bay, Ontario |
| Coordinates | 48°22′56″N 89°14′58″W / 48.38222°N 89.24944°W |
| Statistics | |
| Population - Total - Catholics | (as of 2022) 290,142  89,000 (est.) |
| Information | |
| Denomination | Roman Catholic |
| Rite | Roman Rite |
| Established | April 29, 1952 |
| Cathedral | St. Patrick's Cathedral |
| Patron saint | St. Patrick |
| Secular priests | 28 31 Permanent Deacons |
| Current leadership | |
| Pope | Francis |
| Bishop | vacant |
| Metropolitan Archbishop | Frank Leo |
| Bishops emeritus | Frederick Joseph Colli |
| Website | |
| dotb.ca | |
The Roman Catholic Diocese of Thunder Bay (Latin: Dioecesis Sinus Tonitralis) is a Latin suffragan in the ecclesiastical province of the Metropolitan Archdiocese of Toronto, in Ontario, Canada.
Its cathedral episcopal see is St. Patrick's Cathedral, dedicated to St. Patrick, in Thunder Bay, Ontario.