| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2024 |
| Thankmar | Dankmar | Old High German | German | Words: famous, well-known | |
| Thanos | Athanasius/Athanasia | Old Greek | Greek | immortal | |
| Thaqif | Thaqif | Arabic | Malay | | |
| Thassilo | Tasso | Unknown | German | maybe badger | |
| Thatcher | Thatcher | Old English | English | roof maker | |
| Theo | Theodore/Theodora | Old Greek | German | gift of god | #80 |
| Théo | Theodore/Theodora | Old Greek | French | gift of god | |
| Theobald | Theobald | Old High German | German, Latinized | Words: people / bold, brave | |
| Theoderich | Theoderich | Gothic | German, Latinized | Words: ruler | |
| Theodericus | Theoderich | Gothic | German, Latinized | Words: ruler | |
| Theodor | Theodore/Theodora | Old Greek | German | gift of god | |
| Theodór | Theodore/Theodora | Old Greek | Icelandic | gift of god | |
| Theódór | Theodore/Theodora | Old Greek | Icelandic | gift of god | |
| Theodore | Theodore/Theodora | Old Greek | English | gift of god | #4 |
| Théodore | Theodore/Theodora | Old Greek | French | gift of god | |
| Theodoric | Theoderich | Gothic | English | Words: ruler | |
| Theodoro | Theodore/Theodora | Old Greek | Portuguese | gift of god | |
| Theódoros | Theodore/Theodora | Old Greek | Greek | gift of god | |
| Theophil | Theophil | Old Greek | German | Words: God / friend | |
| Théophile | Theophil | Old Greek | French | Words: God / friend | |
| Theophilus | Theophil | Old Greek | German | Words: God / friend | |
| Théotime | Théotime | Old Greek | French | Words: God / honor, revere | |
| Thiago | Jacob/Jacqueline/Jakoba | Hebrew | Spanish | Yahweh may protect; holder of the heel; supplanter | #55 |
| Thiago Benjamín | Thiago Benjamín | Spanish | Spanish | | |
| Thibaud | Theobald | Old High German | French | Words: people / bold, brave | |
| Thibault | Theobald | Old High German | French | Words: people / bold, brave | |
| Thibaut | Theobald | Old High German | French | Words: people / bold, brave | |
| Thiemo | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Thierry | Theoderich | Gothic | French | Words: ruler | |
| Thies | Matthias/Mattea | Hebrew | German | gift of Yahweh | |
| Thiess | Matthias/Mattea | Hebrew | German | gift of Yahweh | |
| Thietmar | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Thijmen | Thijmen | Old High German | Dutch | Words: people / man | |
| Thijs | Matthias/Mattea | Hebrew | Dutch | gift of Yahweh | |
| Thilo | Thilo | Old High German | German | Words: people | |
| Thimo | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Thimothé | Timotheus/Timotea | Old Greek | French | honoring God | |
| Thöger | Dietger | Old High German | German | Words: people / spear | |
| Thøger | Dietger | Old High German | Scandinavian | Words: people / spear | |
| Thom | Thomas/Thomasina | Aramaic | Dutch, English | twin | |
| Thomas | Thomas/Thomasina | Aramaic | German, Scandinavian, French, English | twin | #39 |
| Thomaz | Thomas/Thomasina | Aramaic | Portuguese | twin | |
| Thommy | Thomas/Thomasina | Aramaic | German, French, English | twin | |
| Thor | Tor/Tora | Old Norse | Scandinavian | thunder | |
| Thoralf | Thoralf | Old Norse | German, Scandinavian | Words: thunder, thunder god / elf | |
| Thorben | Thorben | Old Norse | German, Scandinavian | Words: thunder, thunder god / bear | |
| Thorbjörn | Thorben | Old Norse | Scandinavian | Words: thunder, thunder god / bear | |
| Þórður | Thorfrid/Thurid | Old Norse | Icelandic | Words: thunder, thunder god / beautiful | |
| Thore | Thore | Scandinavian | German, Scandinavian | Words: thunder, thunder god | |
| Thorfrid | Thorfrid/Thurid | Old Norse | Scandinavian | Words: thunder, thunder god / beautiful | |
| Þorsteinn | Thorsten | Old Norse | Icelandic | Words: thunder, thunder god / stone | |
| Thorsten | Thorsten | Old Norse | German, Scandinavian | Words: thunder, thunder god / stone | |
| Thorvald | Thorvald | Old Norse | Scandinavian | Words: thunder, thunder god / rule | |
| Thorwald | Thorvald | Old Norse | German | Words: thunder, thunder god / rule | |
| Þróndr | Trond | Old Norse | Scandinavian | | |
| Thure | Thore | Scandinavian | German | Words: thunder, thunder god | |
| Tiago | Jacob/Jacqueline/Jakoba | Hebrew | Portuguese | Yahweh may protect; holder of the heel; supplanter | |
| Tian | Tian | Mandarin | Mandarin | sky, heaven | |
| Tibe | Tabe | Frisian | Frisian | Words: people | |
| Tiberio | Tiberius | Latin | Italian | Words: river god, Tiber | |
| Tiberius | Tiberius | Latin | German | Words: river god, Tiber | |
| Tibo | Tabe | Frisian | Frisian | Words: people | |
| Tibor | Tiberius | Latin | Hungarian | Words: river god, Tiber | |
| Tiernan | Tiernan | Unknown | Irish | | |
| Ties | Matthias/Mattea | Hebrew | Dutch | gift of Yahweh | |
| Tigran | Tigran | Old Persian | Armenian | fighting with arrows | |
| Tihomir | Tihomir | Old Slavic | Slavic | Words: quiet, silent / peace | |
| Tijn | Martin/Martina | Latin | Dutch | Words: Mars | |
| Tijs | Matthias/Mattea | Hebrew | Dutch | gift of Yahweh | |
| Tikhon | Tycho | Old Greek | Russian | hitting the mark | |
| Til | Till | Old High German | German, Low German | | |
| Tilen | Ägid | Old Greek | Slovenian | Words: oak | |
| Till | Till | Old High German | German, Low German | | |
| Tillman | Till | Old High German | German | | |
| Tillmann | Till | Old High German | German | | |
| Tillo | Thilo | Old High German | German, Low German | Words: people | |
| Tilman | Till | Old High German | German | | |
| Tilo | Thilo | Old High German | German | Words: people | |
| Tim | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Tim | Timotheus/Timotea | Old Greek | German, English | honoring God | |
| Timaeus | Timaeus | Old Greek | German, English | maybe honor | |
| Timeo | Timotheus/Timotea | Old Greek | French | honoring God | |
| Timéo | Timotheus/Timotea | Old Greek | French | honoring God | |
| Timeon | Timon | Old Greek | German, English | Words: honored, esteemed | |
| Timian | Timian | Scandinavian | Scandinavian | thyme | |
| Timm | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Timme | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Timmo | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Timmy | Timotheus/Timotea | Old Greek | English | honoring God | |
| Timo | Dietmar/Diomira | Old High German | German | Words: people / famous, well-known | |
| Timofey | Timotheus/Timotea | Old Greek | Russian | honoring God | |
| Timon | Timon | Old Greek | German | Words: honored, esteemed | |
| Timotej | Timotheus/Timotea | Old Greek | Slovenian | honoring God | |
| Timoteo | Timotheus/Timotea | Old Greek | Spanish, Italian | honoring God | |
| Timothe | Timotheus/Timotea | Old Greek | French | honoring God | |
| Timothé | Timotheus/Timotea | Old Greek | French | honoring God | |
| Timothée | Timotheus/Timotea | Old Greek | French | honoring God | |
| Timotheus | Timotheus/Timotea | Old Greek | German | honoring God | |
| Timothy | Timotheus/Timotea | Old Greek | English | honoring God | #207 |
| Timur | Timur | Turkish | Russian, Turkish | iron | |