| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Telesphorus | - | Ancient Greek (Latinized) | ||
| Te'oma | - | Ancient Aramaic | ||
| Terentius | - | Ancient Roman | ||
| Tertius | TUR-shəs (English) | Ancient Roman | ||
| Teutorigos | - | Ancient Celtic | ||
| ThaÏS | - | Ancient Greek | ||
| Thais | - | Ancient Greek | ||
| Thales | - | Ancient Greek | ||
| Thancmar | - | Ancient Germanic | ||
| Thankarat | - | Ancient Germanic | ||
| Themistocles | - | Ancient Greek (Latinized) | ||
| Themistokles | - | Ancient Greek | ||
| Theobald | THEE-ə-bawld (English) | English (Rare), Ancient Germanic | ||
| Theocritus | - | Ancient Greek (Latinized) | ||
| Theoderich | - | Ancient Germanic |