| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Thoth | - | Egyptian Mythology (Hellenized) | ||
| Thoukydides | - | Ancient Greek | ||
| Thracius | - | Ancient Roman | ||
| Thucydides | thoo-SID-ə-deez (English) | Ancient Greek (Latinized) | ||
| Thurstan | THUR-stən | English (Rare) | ||
| Thutmose | thoot-MO-sə (English), thoot-MOS (English) | Ancient Egyptian (Anglicized) | ||
| Tia | TEE-ə | English | ||
| Tiana | tee-AN-ə | English | ||
| Tianna | tee-AN-ə | English (Modern) | ||
| Tiara | tee-AHR-ə | English (Modern) | ||
| Tibby | TIB-ee | English | ||
| Tiberius | ti-BE-ri-uws | Ancient Roman | ||
| Tiburtius | - | Ancient Roman | ||
| Tierney | TEER-nee | Irish, English (Rare) | ||
| Tiffani | TIF-ə-nee | English |