| Name | Meaning | Gender | Origin |
|---|
| Swan | | Unisex | Hebrew |
| Sweet | | Unisex | Hebrew |
| Swift | | Unisex | |
| Switch | | Unisex | |
| Tad | Aramaic, meaning unclear, possibly from Theodore, gift of God | Male | English |
| Tag | | Unisex | |
| Tai | great extreme | Male | Chinese |
| Taj | crown | Male | Hindi |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | |
| Tate | to be cheerful; windy, a great talker | Male | English |
| Taz | | Male | |
| Teal | Bluish Green Color | Male | English |
| Tex | Of Texas | Male | English |
| Thor | Viking mythology: the ruler of the weather | Male | Norse |
| Tiff | | Unisex | Hebrew |
| Tim | Greek, honoring God | Male | Greek |
| Toad | Amphibian related to frogs, with a broader body and rougher skin. | Unisex | |
| Todd | fox | Male | English |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tosh | | Unisex | |
| Tramp | To travel on foot. A vagrant. | Unisex | |
| Treat | | Male | Hebrew |
| Trent | the flooder | Male | English |
| Trey | third born, three | Male | English |
| Tripp | traveler | Male | Word |