| Name | Meaning | Gender | Origin |
|---|
| Tabby | | Unisex | |
| Tazz | | Unisex | |
| Tennessee | | Male | Hebrew |
| Thomas | Twin
| Male | Aramaic |
| Thomas | Twin
| Male | Aramaic |
| Tiddles | | Unisex | |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tigger | from Winnie the Pooh | Unisex | |
| Timmy | From Timothy - Honoring God | Unisex | |
| Tiny | Extremely small | Unisex | |
| Toby | God is Good | Male | English |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tommy | From Thomas - The twin. | Male | English |
| Tootsie | A girl or young woman. | Unisex | |
| Truffles | Ball shaped chocolate | Unisex | |
| Tucker | Tucker of doth
| Male | English |
| Tux | | Unisex | |
| Tux | | Unisex | |
| Tuxedo | | Unisex | |
| Tweety | | Unisex | Hebrew |
| Twinkle | | Unisex | |
| Tyson | son of a German, son of Ty | Male | English |
| Ute | | Unisex | |
| Vinny | Latin, conquering | Male | English |