| Thao | Woman | Vietnamese Names |
| Tharin | Man | Greek Names |
| Thatcher | Man | English Names |
| Thayer | Man | English Names |
| Thea | Woman | Greek Names |
| Theanna | Woman | American Names |
| Theasyn | Woman | American Names |
| Thecla | Woman | Greek Names |
| Theda | Woman | Greek Names |
| Theia | Woman | Greek Names |
| Thélio | Man | French Names |
| Thelma | Woman | Greek Names |
| Thelonious | Man | Dutch Names |
| Thelonius | Woman | American Names |
| Thelred | Unisex | English Names |
| Thema | Woman | African - Akan of Ghana Names |
| Themba | Unisex | African - Nguni and Zulu Names |
| Thembeka | Woman | African - Xhosa of South Africa Names |
| Themis | Woman | Greek Names |
| Thenjiwe | Woman | African - Nguni Names |