| Thracius | | - | Ancient Roman | |
| Thu | | - | Vietnamese | |
| ThuẦN | | - | Vietnamese | |
| Thucydides | | thoo-SID-ə-deez (English) | Ancient Greek (Latinized) | |
| Thulani | | - | Southern African, Zulu | |
| Thulile | | - | Southern African, Zulu | |
| Thurayya | | - | Arabic | |
| Thurstan | | THUR-stən | English (Rare) | |
| Thutmose | | thoot-MO-sə (English), thoot-MOS (English) | Ancient Egyptian (Anglicized) | |
| Thyra | | - | Swedish, Norwegian, Danish | |
| TiÊN | | - | Vietnamese | |
| Tiamat | | TEE-ə-maht (English), TYAH-maht (English) | Near Eastern Mythology | |
| Tiberiu | | - | Romanian | |
| Tiberius | | ti-BE-ri-uws | Ancient Roman | |
| Tibor | | - | Hungarian, Czech, Slovak | |