| Thunder | Man | American Names |
| Thuong | Unisex | Vietnamese Names |
| Thuraia | Woman | African - Northern Region Names |
| Thuraya | Woman | Arabic Names |
| Thurayya | Woman | Arabic Names |
| Thurl | Unisex | English Names |
| Thurman | Man | English Names |
| Thurstan | Man | English Names |
| Thurston | Man | Scandinavian Names |
| Thuy | Woman | Vietnamese Names |
| Thuyet | Man | Vietnamese Names |
| Thwaite | Man | English Names |
| Thy | Woman | Vietnamese Names |
| Thyme | Unisex | English Names |
| Thyra | Woman | Scandinavian Names |
| Tia | Woman | Spanish Names |
| Tiago | Man | Latin Names |
| Tiana | Woman | Slavic Names |
| Tiara | Woman | Latin Names |
| Tiaret | Woman | African - Algeria Names |