| Name | Meaning | Gender | Origin |
|---|
| 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 | |
| Tiggy | | Unisex | |
| Timmy | From Timothy - Honoring God | Unisex | |
| Tiny | Extremely small | Unisex | |
| Tippy | | Male | |
| Todo | | Unisex | |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Topsy | Topsail | Unisex | English |
| Trouble | A cause of disturbance or difficulty. | Male | |
| Tuppence | British for two pence (coins) | Unisex | |
| Tyler | An English surname frequently used as a first name.
| Male | English |
| Voodoo | | Unisex | |
| Weezie | | Unisex | Hebrew |
| Wellington | From the wealthy estate
| Male | |
| Whiskers | | Unisex | |
| William | resolute protection | Male | English |
| Willie | English from German, resolute protection | Male | English |
| Wrigley | | Unisex | |
| Yum | | Unisex | |
| Zed | God Is Just, Fair | Male | English |
| Zoom | | Unisex | |