T
- Taits Beach
- Talbot
- Talbotville Royal
- Tamarack
- Tamworth
- Tanglewood Beach
- Tannery
- Tansley
- Tansleyville
- Tapley
- Tapleytown
- Tara
- Tarbert
- Tartan
- Tarzwell
- Tatlock
- Taunton
- Tavistock
- Tay
- Taylor
- Taylorwoods
- Tayside
- Tecumseh
- Teeswater
- Teeterville
- Temiskaming Shores
- Temperanceville
- Terrace Bay
- Terra Cotta
- Terra Nova
- Thamesford
- Thamesville
- The Blue Mountains
- The Gully
- The Slash
- Thedford
- Tennyson
- Thessalon
- Teston
- Thistle
- Thompson Hill
- Thorah Beach
- Thornbury
- Thorndale
- Thornhill
- Thorold
- Thorpe
- Throoptown
- Thunder Bay
- Tichborne
- Tilbury
- Tilley
- Tillsonburg
- Timmins
- Tincap
- Tintern
- Tiverton
- Toanche
- Tobacco Lake
- Tobermory
- Toledo
- Tolmie
- Tomelin Bluffs
- Topcliff
- Tormore
- Toronto
- Torrance
- Tory Hill
- Tottenham
- Townsend
- Tralee
- Tramore
- Traverston
- Treadwell
- Trenton
- Trent River
- Trevelyan
- Tullamore
- Turbine
- Turkey Point
- Turner
- Turtle Lake
- Tweed
- Tyrone
Read more about this topic: List Of Communities In Ontario