| ThorbjØRn | | - | Norwegian | |
| Thore | | - | Swedish, Norwegian, Danish | |
| Thorstein | | - | Norwegian | |
| Thorvald | | - | Swedish, Norwegian, Danish | |
| Thyra | | - | Swedish, Norwegian, Danish | |
| Tim | | TIM (English, German, Dutch, Slovene) | English, German, Dutch, Slovene, Swedish, Norwegian, Danish | |
| Tine (1) | | - | Norwegian, Danish | |
| Tobias | | to-BEE-ahs (German), tə-BIE-əs (English) | Biblical, German, Swedish, Norwegian, Danish, English, Biblical Latin, Biblical Greek | |
| Tollak | | - | Norwegian | |
| Tomas | | - | Swedish, Norwegian, Lithuanian | |
| Tone (2) | | - | Norwegian | |
| Tor | | TOOR (Swedish, Norwegian), TOR (Danish) | Swedish, Norwegian, Danish | |
| TorØ | | - | Norwegian | |
| Tora | | - | Swedish, Norwegian, Danish | |
| TorbjØRg | | - | Norwegian | |