- Thirtysix Island
- Thompson Heights
- Thompson Riverview Terrace
- Thomson
- Thor
- Thorhult
- Three Island
- Three Rivers Mobile Home Park
- Three Sisters Island
- Three Sisters Islands
- Threemile Island
- Thunderbird Mobile Home Park
- Thunderbird Resort
- Tilden Junction
- Timber Island
- Timberline Mobile Home Park
- Tintah
- Tobique
- Tofte
- Togo
- Toimi
- Toivola
- Tonka Bay
- Topeka Islands
- Torfin
- Tower
- Tower Junction
- Towers Island
- Town and Country Estates Mobile Home Park
- Town Lake Estates