Starting with letter T
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 481 | Thomas | Biblical | A twin | M | |
| 482 | Thomas | Hebrew | Twin. | M | |
| 483 | Thomas | Shakespearean | 'Henry IV' Duke of Clarence. Thomas Wart, country soldier. 'Henry VI' Thomas Horner, armourer. 'Henry VIII' Sir Thomas Lovell. 'Measure for Measure' A friar. 'King Henry VI, III', 'Henry VIII' Duke of Norfolk. 'King Richard III' Sir Thomas Vaughan. | M | |
| 484 | Thomdic | English | From the thorny dike. | M | |
| 485 | Thomkins | English | Little Tom. | M | |
| 486 | Thompson | English | Derives from Thomas 'Twin.'. | M | |
| 487 | Thor | Danish | Mythical god of thunder. | M | |
| 488 | Thor | Norse | God of thunder. | M | |
| 489 | Thor | Scandinavian | Thunder. Mythological Thor was the Norse god of thunder and one of the sons of Odin. Thursday was named for Thor. | M | |
| 490 | Thor | Swedish | God of thunder. | M | |
| 491 | Thorald | Norse | Thor ruler. | M | |
| 492 | Thoraldtun | English | From the thunder estate. | M | |
| 493 | Thorarin | Norse | Son of Thorkol. | M | |
| 494 | Thorbert | Norse | The glorious Thor. | M | |
| 495 | Thorbert | Teutonic | Glorious as Thor. | M | |
| 496 | Thorbiartl | Norse | The glorious Thor. | M | |
| 497 | Thorbum | Norse | Bear of Thor. | M | |
| 498 | Thord | Norse | Son of Viking. | M | |
| 499 | Thorfinn | Norse | Thunder Finn. | M | |
| 500 | Thorgils | Norse | Father of Ingiald. | M | |