- Strontian, Highland, Scotland, United Kingdom1
- Succasunna, Morris County, New Jersey, United States1
- Sulphur City, Calcasieu Parish, Louisiana, United States1
- Tilgate Forest, Wealdon, East Sussex, England, United Kingdom1
- Towns County, Georgia, United States1
- Transylvania, Romania1
- Trenton, Mercer County, New Jersey, United States1
- Trumbull, Fairfield County, Connecticut, United States1
- Trumbull, Fairfield County,Connecticut, United States1
- Tunaberg, Nyk'ping, S'dermanland, Sweden1
- Tuscany, Italy1
- Tyre, Liban-Sud, Lebanon1
- Unity, Sullivan County, New Hampshire, United States1
- Upper Dublin Township, Montgomery County, Pennsylvania, United States1
- Ut' Mines, Ut', S'dermanland, Sweden1
- Vermont, United States1
- Vulcano Island, Sicily, Italy1
- Vychodocesky, Czech Republic1
- Waccamaw River , Horry County, South Carolina, United States1
- Wales, United Kingdom1