| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1421 | Tabbart | German | Brilliant. | M | |
| 1422 | Tahbert | German | Brilliant. | M | |
| 1423 | Tancred | German | Thoughtful counsel. | M | |
| 1424 | Tavin | German | A nickname for Gustav 'royal staff.'. | M | |
| 1425 | Tedrick | German | Variant of the old German name Theodoric 'ruler of the people.'. | M | |
| 1426 | Terell | German | Powerful. | M | |
| 1427 | Terrall | German | Powerful. | M | |
| 1428 | Terrel | German | Powerful. | M | |
| 1429 | Terrell | German | Powerful. | M | |
| 1430 | Terrelle | German | Powerful. | M | |
| 1431 | Terrill | German | Powerful. | M | |
| 1432 | Terry | German | Variant of Theodoric: Ruler of the people. | M | |
| 1433 | Theo | German | Diminutive of Theobald: Bold people. | M | |
| 1434 | Theobald | German | Bold people. | M | |
| 1435 | Theodoric | German | Ruler of the people. | M | |
| 1436 | Tibelda | German | Boldest. | F | |
| 1437 | Tibelde | German | Boldest. | F | |
| 1438 | Tibeldie | German | Boldest. | F | |
| 1439 | Tihalt | German | Prince of the people. | M | |
| 1440 | Tilda | German | Diminutive of Matilda: Strength in battle. Matilda was the wife of William the Conqueror. Used in Australia as slang for a bushman's pack. | F | |