- Thomas Village
- Thomastown
- Thompson
- Thorn Hill
- Thornapple Grove
- Thornapple Highlands
- Thornhill
- Thornport
- Thornville
- Thorps
- Three Forks
- Three Locks
- Thrifton
- Thunderbird Terrace
- Thurman
- Thurston
- Tibbetts Corners
- Tick Ridge
- Tiffany Acres
- Tiffin
- Tiffin Meadows
- Tiger
- Tile
- Tilton Crossroads
- Tiltonsville
- Timber Creek
- Timber Creek Estates
- Timber Creek Heights
- Timberbrook
- Timberlake