| Name | Meaning | Gender | Origin |
|---|
| Terry | Latin clan name of uncertain meaning | Male | English |
| Thaddeus | Praise be to God | Male | Aramaic |
| Theodore | gift of God | Male | Greek |
| 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 |
| Tisha | Joy, Gladness | Unisex | English |
| Titan | | Male | |
| Titus | of the giants | Male | Latin |
| Todd | fox | Male | English |
| Tosh | | Unisex | |
| Travis | crossing | Male | |
| Trevor | Neville's toad.
| Male | Welsh |
| Tristan | A knight
| Male | Celtic |
| Tucker | Tucker of doth
| Male | English |
| Tut | after Tutankhamun, or King Tut | Unisex | |
| Tyler | An English surname frequently used as a first name.
| Male | English |
| Tyrone | From Owen's territory. County Tyrone in Ireland. The late actor Tyrone Power.
| Male | Irish |
| Tyronne | From Owen's territory. County Tyrone in Ireland. The late actor Tyrone Power.
| Male | |
| Tyson | son of a German, son of Ty | Male | English |
| Ualtar | Strong fighter
| Male | |
| Ulysses | Greek mythology name, wrathful | Male | Latin |
| Uwe | Blade | Unisex | German |