- Travis
- Talcville
- Tavern Island
- Taylors Corner
- Temagami Islands
- Terrace Park
- The K amnd M Mobile Home Park
- The Rock
- Third Brother Island
- Thompson Island
- Thompsons Island (historical)
- Three Sisters Islands
- Tick Island (historical)
- Toothpick Island
- Treasure Island (historical)
- Tucker Terrace
- Turnbull Corner
- Twilight Island
- Twin Island (historical)
- Tanager Woods
- Tenantville
- Terrel Hills
- The Meadows
- The Springs
- Thompson Island
- Thompson Trailer Park
- Tomaselli Estates
- Travers Corners
- Travers Manor
- Trotterview Trailer Park