- Thompsontown Station
- Thornbury
- Thornbury Hunt
- Thornbury Knoll
- Thorndale
- Thornhurst
- Thornridge
- Thornton
- Thornton Junction
- Thornwood
- Three Mile Island
- Three Springs Run
- Three Tuns
- Threemile
- Thumptown
- Tiadaghton
- Tiberton
- Tidal
- Tide
- Tidioute Island
- Tiffany
- Tifllie
- Tillotson
- Timber Ridge
- Timberly Heights
- Timbuck
- Tingley
- Tinicum Island (historical)
- Tinicum Township
- Tinicum Township