Places beginning with TR in Ohio, United States
- Tradersville
- Trail
- Trailerville Mobile Home Park (subdivision)
- Trail Run (historical)
- Tranquility
- Treadway (historical)
- Treaton
- Trebein
- Tremleys (historical)
- Tremont
- Tremont City
- Trenton
- Trenton, City of
- Trenton, Township of
- Triadelphia
- Trilby
- Trimble
- Trimble, Township of
- Trinity (historical)
- Trinway
- Triumph
- Trombley
- Tropic
- Trotwood
- Trowbridge
- Troy
- Troy Farms (subdivision)
- Troyton
- Troy, Township of
- Troy, Township of
- Troy, Township of
- Troy, Township of
- Troy, Township of
- Troy, Township of
- Troy, Township of
- Troy Villa Mobile Home Park
- Truetown
- Trumbull
- Trumbull County
- Trumbull Homes (subdivision)
- Trumbull, Township of
- Trump
- Truro
- Truro, Township of