| Abbreviation | Definition |
|---|---|
| TT | Tommy Thayer, musician |
| TTQ | Tara Taylor Quinn |
| TTT | Tony The Tiger |
| TUC | Toucan Sam |
| TW | Tiger Woods |
| TW | Tim Willits |
| TWTH | The World is Tired of Hate |
| TY | Trevor Young |
| TYK | Tae Yun Kim |
| TZN | Tarzan |
| UHF | Ulrich Henderson Forbes |
| UJ | Uncle Joe |
| UJJ | Urbain-Jean-Joseph le Verrier, French Astronomer |
| US | Uncle Sam |
| US | Uwe Schmidt |
| USG | Ulysses Simpson Grant |
| VADC | Vincent Assante Di Cupillo, Freelance Photographer |
| VB | Van Buren |
| VB | Victor Borge |
| VB | Victor Boyartchuk |