- Threemile Crossing
- Tikura
- Tipperary Corner
- Torreys
- Tramway
- Transfer
- Travers
- Treasureton
- Trestle Creek
- Triangle
- Triumph
- Trout
- Troy
- Trude
- Tule Island
- Tunupa
- Turner
- Turner
- Turnpike
- Tuttle
- Twin Beaches
- Twin Falls
- Twin Forks
- Twin Groves
- Twin Islands
- Twin Springs
- Twinlow
- Two Forks
- Tyhee
- Tyrrel Island (historical)