| Name | Meaning | Gender | Origin |
|---|
| Tam | twin | Male | Scottish |
| Ted | English, wealthy guardian | Male | English |
| Terry | Latin clan name of uncertain meaning | Male | English |
| Theo | divine gift | Male | English |
| Thomas | Twin
| Male | Aramaic |
| Thomas | Twin
| Male | Aramaic |
| Thor | Viking mythology: the ruler of the weather | Male | Norse |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tim | Greek, honoring God | Male | Greek |
| Tito | Latin, meaning unknown | Male | Spanish |
| Titus | of the giants | Male | Latin |
| Toby | God is Good | Male | English |
| Todd | fox | Male | English |
| Toffee | A hard brown, chewy candy | Male | |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tomas | twin | Male | |
| Tomcat | | Male | Hebrew |
| Tommy | From Thomas - The twin. | Male | English |
| Tony | priceless one | Male | English |
| Tracy | path, road | Male | |
| Tristan | A knight
| Male | Celtic |
| Trouble | A cause of disturbance or difficulty. | Male | |
| Troy | Descendant of the curly haired ones | Male | Irish |
| Truman | A faithful follower, loyal servant. | Male | English |