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- Thames River (Lighthouse Cove)
- Thames River Range Lighthouse
- Thessalon
- Thornbury
- Thorold
- Thunder Bay (Current River)
- Thunder Bay Lighthouse
- Tobermory Lighthouse
- Tobermory (Little Tub Harbour)
- Tomahawk Island Lighthouse
- Toronto (Bluffers Park)
- Toronto Harbour Lighthouse
- Toronto Harbour West Entrance Lighthouse
- Trenton (Bay Marine)
- Trowbridge Island Lighthouse