| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| ThaÍS | - | Portuguese (Brazilian) | ||
| Thalita | - | Portuguese (Brazilian) | ||
| Thanh | TUNG, TUN | Vietnamese | ||
| Thema | - | Western African, Akan | ||
| Thi | - | Vietnamese | ||
| Thiago | - | Portuguese (Brazilian) | ||
| Thu | - | Vietnamese | ||
| ThuẦN | - | Vietnamese | ||
| TiÊN | - | Vietnamese | ||
| Tiago | - | Portuguese | ||
| Tiburcio | - | Spanish, Portuguese | ||
| Tiitus | TEE:-toos (Finnish) | Finnish, Estonian | ||
| Timoteo | tee-mo-TE-o (Italian, Spanish) | Italian, Spanish, Portuguese | ||
| Tirta | TEER-tah | Indonesian | ||
| Tirto | - | Indonesian |