- Trowbridge (continued)
- Troy
- Troyer
- Trubenbach
- Trudeau
- Trudell
- True
- Trueblood
- Truesdale
- Truesdell
- Truman
- Trumble
- Trumbull
- Trundy
- Trupp
- Tryon
- Tsatsis
- Tubbs
- Tubman
- Tuchirello
- Tuck
- Tucker
- Tudor
- Tueller
- Tuft
- Tufts
- Tulloch
- Tully
- Tumminello
- Tupper
- Turberville
- Turin
- Turk
- Turloar
- Turnbull
- Turner
- Turney
- Turrell
- Turtle
- Turvell
- Tuthill
- Tutt
- Tuttle