| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Thancmar | - | Ancient Germanic | ||
| Thane | THAYN | English (Rare) | ||
| Thankarat | - | Ancient Germanic | ||
| Thankful | THANGK-fəl | English (Archaic) | ||
| Thea | TE-ah (German), THEE-ə (English) | German, Swedish, Danish, Norwegian, English | ||
| Theirn | - | French | ||
| Thelma | THEL-mə | English | ||
| Themistocles | - | Ancient Greek (Latinized) | ||
| Themistokles | - | Ancient Greek | ||
| Theo | THEE-o (English), TAY-o (Dutch) | English, Dutch | ||
| Theobald | THEE-ə-bawld (English) | English (Rare), Ancient Germanic | ||
| Theocritus | - | Ancient Greek (Latinized) | ||
| Theoderich | - | Ancient Germanic | ||
| Theodoar | - | Ancient Germanic | ||
| Theodoard | - | Ancient Germanic |