| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Thibault | tee-BO | French | ||
| Thiemo | - | German, Dutch, Ancient Germanic | ||
| Thierry | tee-e-REE | French | ||
| Thietmar | - | Ancient Germanic | ||
| Thom | TAHM | English | ||
| 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 | ||
| Thomasina | tom-ə-SEE-nə | English | ||
| Thorburn | THAWR-bərn | English (Rare) | ||
| Thorley | THAWR-lee | English (Rare) | ||
| Thornton | THAWRN-tən | English | ||
| Thoth | - | Egyptian Mythology (Hellenized) | ||
| Thoukydides | - | Ancient Greek | ||
| Thracius | - | Ancient Roman | ||
| Thucydides | thoo-SID-ə-deez (English) | Ancient Greek (Latinized) | ||
| Thurstan | THUR-stən | English (Rare) |