| Name | Meaning | Gender | Origin |
|---|
| Tater | | Male | |
| Taz | | Male | |
| Tazzy | | Unisex | |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Teeko | | Unisex | Hebrew |
| Thor | Viking mythology: the ruler of the weather | Male | Norse |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Tibbs | | Unisex | Hebrew |
| Tiddles | | Unisex | |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger Lily | | Unisex | |
| Tiki | Maori figure representing an ancestor. A wooden or stone image of a Polynesian god. | Unisex | |
| Tiko | | Unisex | Hebrew |
| Timmy | From Timothy - Honoring God | Unisex | |
| Tinkerbell | | Unisex | |
| Tinman | | Unisex | Hebrew |
| Tiramisu | | Male | Hebrew |
| Titch | Tiny | Unisex | |
| Tito | Latin, meaning unknown | Male | Spanish |
| Toby | God is Good | Male | English |
| Tofu | | Unisex | |
| Tommy | From Thomas - The twin. | Male | English |