| Thore | | - | Swedish, Norwegian, Danish | |
| Thorstein | | - | Norwegian | |
| Thorsten | | TAWR-sten (German) | Swedish, Danish, German | |
| Thorvald | | - | Swedish, Norwegian, Danish | |
| Thoth | | - | Egyptian Mythology (Hellenized) | |
| Thoukydides | | - | Ancient Greek | |
| Thracius | | - | Ancient Roman | |
| Thucydides | | thoo-SID-ə-deez (English) | Ancient Greek (Latinized) | |
| Thulani | | - | Southern African, Zulu | |
| Thulile | | - | Southern African, Zulu | |
| Thutmose | | thoot-MO-sə (English), thoot-MOS (English) | Ancient Egyptian (Anglicized) | |
| Thyra | | - | Swedish, Norwegian, Danish | |
| Tiberiu | | - | Romanian | |
| Tiberius | | ti-BE-ri-uws | Ancient Roman | |
| Tibor | | - | Hungarian, Czech, Slovak | |