| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2024 |
| Tine | Martin/Martina | Latin | Slovenian | Words: Mars | |
| Tino | Valentine/Valentina | Latin | Italian | the strong, the healthy | |
| Tinus | Martin/Martina | Latin | Dutch | Words: Mars | |
| Titan | Titan | Unknown | English | | |
| Tito | Titus/Tiziana | Latin | Spanish, Italian | | |
| Titouan | Titouan | French | French | | |
| Titus | Titus/Tiziana | Latin | German | | #383 |
| Tiu | Tyr | Old Norse | Old Norse | Words: light, daylight, deity | |
| Tiw | Tyr | Old Norse | Old English | Words: light, daylight, deity | |
| Tiwaz | Tyr | Old Norse | Germanic | Words: light, daylight, deity | |
| Tizian | Titus/Tiziana | Latin | German | | |
| Tiziano | Titus/Tiziana | Latin | Italian | | |
| Tiziano Benjamin | Tiziano Benjamin | (la) | Spanish | | |
| Tizio | Tizio/Tizia | Latin | Italian | | |
| Tjaard | Diethard | Old High German | Frisian | Words: people / brave, hardy | |
| Tjalf | Detlev | Old High German | Frisian | Words: people / offspring | |
| Tjard | Diethard | Old High German | Frisian | Words: people / brave, hardy | |
| Tjark | Dietrich | Old High German | Frisian | ruler of the people | |
| Tjarko | Dietrich | Old High German | Frisian | ruler of the people | |
| Tobi | Tobias | Hebrew | German | Yahweh is good | |
| Tobia | Tobias | Hebrew | Italian | Yahweh is good | |
| Tobiah | Tobias | Hebrew | English | Yahweh is good | |
| Tobias | Tobias | Hebrew | German, English | Yahweh is good | #280 |
| Tobiás | Tobias | Hebrew | Czech | Yahweh is good | |
| Tobías | Tobias | Hebrew | Spanish | Yahweh is good | |
| Tobie | Tobias | Hebrew | French | Yahweh is good | |
| Tobin | Tobin | English | English | | |
| Toby | Tobias | Hebrew | English | Yahweh is good | |
| Todd | Todd | Old English | English | fox | |
| Todor | Theodore/Theodora | Old Greek | Bulgarian | gift of god | |
| Tøger | Dietger | Old High German | Scandinavian | Words: people / spear | |
| Toine | Anthony/Antonia | Latin | Dutch | | |
| Toivo | Toivo | Finnish | Finnish | hope | |
| Tolga | Tolga | Turkish | Turkish | iron helmet | |
| Tom | Thomas/Thomasina | Aramaic | German, French, English | twin | |
| Toma | Thomas/Thomasina | Aramaic | Georgian | twin | |
| Toma | Thomas/Thomasina | Aramaic | Serbo-Croatian | twin | |
| Tomas | Thomas/Thomasina | Aramaic | Scandinavian, Spanish | twin | #734 |
| Tomás | Thomas/Thomasina | Aramaic | Slovak, Czech | twin | |
| Tomás | Thomas/Thomasina | Aramaic | Spanish | twin | |
| Tómas | Thomas/Thomasina | Aramaic | Icelandic | twin | |
| Tomaso | Thomas/Thomasina | Aramaic | Italian | twin | |
| Tomass | Thomas/Thomasina | Aramaic | Latvian | twin | |
| Tomasz | Thomas/Thomasina | Aramaic | Polish | twin | |
| Tomé | Thomas/Thomasina | Aramaic | Portuguese | twin | |
| Tomislav | Tomislav | Old Slavic | Slavic | Words: fame, glory, Slav | |
| Tommas | Thomas/Thomasina | Aramaic | Maltese | twin | |
| Tommaso | Thomas/Thomasina | Aramaic | Italian | twin | |
| Tommy | Thomas/Thomasina | Aramaic | English | twin | #730 |
| Tomor | Tomor | Albanian | Albanian | | |
| Tomorr | Tomor | Albanian | Albanian | | |
| Toni | Anthony/Antonia | Latin | German | | |
| Tonio | Anthony/Antonia | Latin | Spanish | | |
| Tönjes | Anthony/Antonia | Latin | German, Low German | | |
| Toño | Anthony/Antonia | Latin | Spanish | | |
| Tony | Anthony/Antonia | Latin | English | | #801 |
| Topias | Tobias | Hebrew | Finnish | Yahweh is good | |
| Tor | Tor/Tora | Old Norse | Scandinavian | thunder | |
| Toralf | Thoralf | Old Norse | German, Scandinavian | Words: thunder, thunder god / elf | |
| Torben | Thorben | Old Norse | German, Scandinavian | Words: thunder, thunder god / bear | |
| Torbjörn | Thorben | Old Norse | Scandinavian | Words: thunder, thunder god / bear | |
| Torbjørn | Thorben | Old Norse | Scandinavian | Words: thunder, thunder god / bear | |
| Tord | Thorfrid/Thurid | Old Norse | Scandinavian | Words: thunder, thunder god / beautiful | |
| Tore | Thore | Scandinavian | German, Scandinavian | Words: thunder, thunder god | |
| Torgeir | Torgeir | Old Norse | Scandinavian | Words: thunder, thunder god / spear | |
| Torgils | Torgils | Old Norse | Scandinavian | Words: thunder, thunder god / hostage | |
| Toribio | Toribio | Latin | Spanish | | |
| Torin | Torin | Irish | English | chief | |
| Torjuls | Torgils | Old Norse | Scandinavian | Words: thunder, thunder god / hostage | |
| Torjus | Torgils | Old Norse | Scandinavian | Words: thunder, thunder god / hostage | |
| Torquato | Torquato | Latin | Italian | | |
| Torrance | Torrance | Old Irish | English | maybe from the low hills | |
| Torrence | Torrance | Old Irish | English | maybe from the low hills | |
| Torrey | Torrey | Unknown | English | | |
| Torstein | Thorsten | Old Norse | Scandinavian | Words: thunder, thunder god / stone | |
| Torsten | Thorsten | Old Norse | German, Scandinavian | Words: thunder, thunder god / stone | |
| Torvald | Thorvald | Old Norse | Scandinavian | Words: thunder, thunder god / rule | |
| Torwald | Thorvald | Old Norse | German | Words: thunder, thunder god / rule | |
| Tory | Torrance | Old Irish | English | maybe from the low hills | |
| Tosco | Tosco/Tosca | Latin | Italian | | |
| Trace | Tracy/Tracy | Old French | English | | #704 |
| Tracey | Tracy/Tracy | Old French | English | | |
| Tracy | Tracy/Tracy | Old French | English | | |
| Trae | Trae | Unknown | English | | |
| Traian | Trajan | Latin | Romanian | | |
| Trajan | Trajan | Latin | German, English | | |
| Traugott | Traugott | German | German | Words: trust / God | |
| Travis | Travis | Old French | English | Words: cross | #361 |
| Travon | Trevon | Unknown | English | | |
| Trayvon | Trevon | Unknown | English | | |
| Tre | Tre | Unknown | English | | |
| Trent | Trent | Old English | English | | |
| Trenten | Trenton | English | English | Trent's town | |
| Trenton | Trenton | English | English | Trent's town | #887 |
| Trever | Trevor | Welsh | English | big village | |
| Trevin | Trevin | English | English | | |
| Trevion | Trevon | Unknown | English | | |
| Trevon | Trevon | Unknown | English | | |
| Trevor | Trevor | Welsh | English, Welsh | big village | #625 |
| Trey | Trey | English | English | three | #789 |