- Taaffe
- Taatjes
- Tabaka
- Tabako
- Tabakovic
- Tabat
- Tabbert
- Taber
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- Tachovsky
- Tack
- Tackman
- Tacyshyn
- Tade
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- Taff
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- Taj
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- Taketa
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- Talbert
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- Tall
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- Tallakson
- Tallen
- Talso
- Tam
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- Tanaka
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- Tanick
- Tankenoff
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- Tapper
- Taraldson
- Taran
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- Taratsas
- Tarman
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- Tarsney
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- Taschler
- Taschner
- Tashi
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- Tatam
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- Tate
- Tatge
- Tatley
- Tatsak
- Tatum
- Tauber
- Tauer
- Taulbee
- Tausch
- Tauscheck
- Taylor
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- Tazik
- Tazzioli
- Teachout
- Techar
- Tedlund
- Teed
- Teener
- Teeson
- Teicher
- Teien
- Teigen
- Teigland
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- Tell
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- Tellers
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- Tellijohn
- Tello
- Temkin
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- Temple
- Templin
- Temte
- Tenbensel
- Tenbroek
- Tendrup
- Tengdin
- Tenk
- Tennant
- Tenneson
- Tenney
- Tennison
- Tenold
- Teorey
- Tepfer
- Tepley
- Teplitsky
- Tepper
- Terhaar
- Terho
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- Terlson
- Terrell
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- Terrill
- Terrio
- Terry
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- Tessmann
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- Tetzman
- Tews
- Teynor
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- Thaden
- Thaemert
- Thal
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- Thanh
- Thannum
- Thao
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- Tharp
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- Thayer
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- Theilmann
- Thein
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- Theisen
- Theiss
- Theissen
- Theiste
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- Thell
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- Therrien
- Thesenvitz
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- Theusch
- Thewis
- Thibault
- Thibert
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- Thiegs
- Thiel
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- Thielen
- Thielhorn
- Thieling
- Thielke
- Thielman
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- Thiers
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- Thiessen
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- Thoe
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- Thole
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- Thom
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- Thomala
- Thomas
- Thomes
- Thomey
- Thomlinson
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- Thompkins
- Thompson
- Thompto
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- Thomson
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- Thorbus
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- Thorn
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- Thorpe
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- Thraen
- Thrall
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- Thrasher
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- Throndson
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- Thue
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- Thulin
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- Thuras
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- Thurk
- Thurman
- Thurmond
- Thurn
- Thurner
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- Thurston
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- Tibbetts
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- Tich
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- Tom
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- Trudeau
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- Trulen
- Trullinger
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- Truman
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- Turnquist
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- Tutoky
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- Tvedt
- Tveitbakk
- Tverberg
- Tverberg-Bina
- Tveter
- Tweedy
- Tweet
- Twingstrom
- Twisk
- Twiss
- Twist
- Twite
- Twyman
- Tyberg
- Tyckoson
- Tye
- Tyler
- Tyner
- Tyo
- Tyree
- Tyrer
- Tyroll
- Tyrpa
- Tysk
- Tyson
- Tysver