| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Thomas | TAHM-əs (English), TOM-əs (English), to-MAH (French), TO-mahs (German, Dutch), tho-MAHS (Greek) | English, French, German, Dutch, Swedish, Norwegian, Danish, Greek, Biblical, Biblical Latin, Biblica | ||
| Thoukydides | - | Ancient Greek | ||
| Thracius | - | Ancient Roman | ||
| Thucydides | thoo-SID-ə-deez (English) | Ancient Greek (Latinized) | ||
| Thulani | - | Southern African, Zulu | ||
| Thulile | - | Southern African, Zulu | ||
| Thurayya | - | Arabic | ||
| Thutmose | thoot-MO-sə (English), thoot-MOS (English) | Ancient Egyptian (Anglicized) | ||
| Thyrza | - | Dutch | ||
| Tiberius | ti-BE-ri-uws | Ancient Roman | ||
| Tibor | - | Hungarian, Czech, Slovak | ||
| Tiburtius | - | Ancient Roman | ||
| Tichaona | - | Southern African, Shona | ||
| Tidir | - | Northern African, Berber | ||
| Tiede | TEE-də (Dutch) | Frisian, Dutch |