| Titus | | TI-tuws (Ancient Roman), TIE-təs (English) | Ancient Roman, English, Biblical, Biblical Latin | |
| Tiyamike | | tee-yah-MEE-kay | Southern African, Chewa | |
| Tjaard | | TYAH:RT (Dutch) | Frisian, Dutch | |
| Tjeerd | | TYAY:RT (Dutch) | Frisian, Dutch | |
| Tlaloc | | TLAH-lok | Aztec And Toltec Mythology | |
| ToŠE | | TO-she | Macedonian | |
| Tobiah | | to-BIE-ə (English) | Biblical | |
| Tobias | | to-BEE-ahs (German), tə-BIE-əs (English) | Biblical, German, Swedish, Norwegian, Danish, English, Biblical Latin, Biblical Greek | |
| Tobit | | - | Biblical, Biblical Latin | |
| Tobith | | - | Biblical Greek | |
| Todor | | - | Bulgarian, Serbian, Macedonian | |
| Todorka | | - | Bulgarian, Macedonian | |
| Toinette | | - | French | |
| Tolly | | - | English (Archaic) | |
| Tom (1) | | TAHM (English), TAWM (Dutch) | English, Dutch | |