 Ontario electoral district | |
|---|---|
| Defunct federal electoral district | |
| Legislature | House of Commons |
| District created | 1966 |
| District abolished | 1976 |
| First contested | 1968 |
| Last contested | 1974 |
Thunder Bay was an electoral district in the northwestern part of the province of Ontario, Canada, that was represented in the House of Commons of Canada from 1968 to 1979, and the Legislative Assembly of Ontario until 1975.