- Ta'agan Point
- Taconic
- Taftville
- Talcottville
- Talmadge Hill
- Tariffville
- Tariffville Center
- Taunton Rock
- Tavern Island
- Taylor Corners
- Taylor Town
- Terramaugus Island
- Terramuggus
- Terryville
- Thames View
- Thamesville
- Thatchbed Island
- The Cedars
- The Chimneys
- The Cows
- The Gables
- The Lime Kiln
- The Plans
- The Thimbles
- Thistle Island
- Thomaston
- Thompson
- Thompsonville
- Thralltown
- Three Quarters Rock