| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1381 | Theora | Greek | Watcher. | F | |
| 1382 | Theore | Greek | Watcher. | F | |
| 1383 | Thera | Greek | Untamed. | F | |
| 1384 | Theresa | Greek | Variant of Teresa: Reaper; from Therasia. | F | |
| 1385 | Therese | Greek | Reaper. | F | |
| 1386 | Theresia | Greek | Variant of Teresa: Reap; from Therasia. | F | |
| 1387 | Thetis | Greek | Mother of Achilles. | F | |
| 1388 | Thia | Greek | Divine. | F | |
| 1389 | Thira | Greek | Untamed. | F | |
| 1390 | Thisbe | Greek | Lover of Pyramus. | F | |
| 1391 | Thora | Greek | Watcher. | F | |
| 1392 | ThTrFse | Greek | Variant of Teresa: Reap; from Therasia. | F | |
| 1393 | Thy | Greek | Untamed. | F | |
| 1394 | Tia | Greek | Goddess; godly. Also abbreviation of names like Althea and Dorothea. The mythological Thea was Greek goddess of light and mother of the sun; moon and dawn. | F | |
| 1395 | Tiah | Greek | Goddess; godly. Also abbreviation of names like Althea and Dorothea. The mythological Thea was Greek goddess of light and mother of the sun; moon and dawn. | F | |
| 1396 | Tienette | Greek | Crowned in victory. | F | |
| 1397 | Tifany | Greek | Gods incarnate. | F | |
| 1398 | Tiffany | Greek | Gods incarnate. | F | |
| 1399 | Tiffeny | Greek | Gods incarnate. | F | |
| 1400 | Timothea | Greek | Feminine form of Timothy: God's honour; God fearing. | F | |