| Taavi | Finnish | The beloved, the adored one. From the name David. |
| Tab | Persian | A drum or drummer. |
| Tabansi | African | one who endures |
| Tabari | North African | after famous muslim historian |
| Tabb | Persian | A drum or drummer. |
| Tabor | Persian | A drum or drummer. |
| Tad | Irish Gaelic | A poet or philosopher. Also see Teague. |
| Tadc | Celtic | |
| Tadd | Greek | Courageous. |
| Taddeo | Greek | Courageous. |
| Tadi | Omaha Indian | wind |
| Taffy | Welsh | The beloved, the adored one. From the name David. |
| Taggart | Gaelic | A priest. |
| Tahir | Arabic | Pure and virtuous. |
| Tai | Vietnamese | The talented one. |
| Tailer | Old French | The tailor. |
| Tailor | Old French | The tailor. |
| Tait | Old Norse | Jolly, cheerful. Also see Tatum. |
| Tajo | Spanish | day |
| Takai | Japanese | |
| Takoda | Native American | The friend of all. |
| Taksa | Hindu | a son of Bharata |
| Taksony | Hungarian | well fed, content, merciless, wild |
| Taku | Japanese | |
| Talbot | Old French | From the valley. |
| Talfryn | Welsh | From the top of the hill. |
| Talib | Arabic | |
| Taliesin | Welsh | A radiant brow. |
| Tallis | Persian | Wise, learned. |
| Talman | Hebrew | to injure, to oppress |
| Talon | ||
| Talorg | Welsh | |
| Talos | Greek | giant protector of Minos island |
| Tam | Scottish | A twin or heart. A boy or girl's name. |
| Tama | Japanese/Polynesian | Japanese: A jewel. Polynesian: A boy or son. A boy or girl's name. |
| Tamas | Greek | A twin. |
| Tamer | Turkish | |
| Tamir | Arabic | pure, tall stately |
| Tancred | Teutonic | A thoughtful adviser. |
| Tancredo | Italian | of thoughtful counsel |
| Tane | Polynesian | The name of a god. |
| Tanek | Polish | immortal |
| Taner | Turkish | |
| Tangaroa | Polynesian | Of the sea. |
| Tangwyn | Welsh | Peace. |
| Tanicus | Latin | |
| Tannar | Old English | Leather worker. |
| Tanner | Old English | Leather worker. |
| Tano | Ghanese | name of river |
| Tapan | Hindu | |
| Tapesh | Hindu | |
| Tara | Irish Gaelic/Sanskrit | Irish Gaelic: A rocky hill, from the ancient home of Ireland's kings. Sanskrit: A star. The name of a Buddhist goddess. A boy or girl's name. |
| Tarang | Hindu | |
| Tarasios | Greek | of Tarentum |
| Tarcal | Hungarian | |
| Tardos | Hungarian | bald |
| Taree | Aboriginal | A wild fig. |
| Tariq | Arabic | The night visitor. |
| Tarjan | Hungarian | name of an honor |
| Tarkan | Turkish | |
| Tarn | Old Norse | A mountain pool. |
| Taro | Japanese | The firstborn son. |
| Tarquin | Latin | The name of two early Roman kings. |
| Tarrant | Old English | From the name of a river. |
| Tarun | Sanskrit | Young, tender. |
| Tas | Hungarian | well fed, stone |
| Tashi | Tibetan/Sherpa | Prosperity. A boy or girl's name. |
| Tate | Old Norse | Jolly, cheerful. Also see Tatum. |
| Tathal | Welsh | |
| Tathan | Welsh | |
| Tatum | Old English | From Tate's homestead. A boy or girl's name. |
| Taurin | Latin | born under the sign of Taurus |
| Taurinus | Latin | |
| Taurus | From Shakespeare's play Antony & Cleopatra. | |
| Tavis | Scottish | twin |
| Tavish | Scottish Gaelic | A twin. A form of Thomas. |
| Tawhiri | Polynesian | A tempest. |
| Taylor | Old French | A tailor. A boy or girl's name. |
| Teague | Irish Gaelic | A poet or philosopher. |
| Teal | English | A water bird. A boy or girl's name. |
| Tean | Cornish | One of the Isles of Scilly. A boy or girl's name. |
| Tearlach | Scottish | |
| Tecer | Turkish | |
| Tecwyn | Welsh | White, fair. |
| Ted | Old English | Divine gift. |
| Teddie | Old English | Divine gift. |
| Teddy | Old English | Divine gift. |
| Tee | ||
| Tej | Hindu | |
| Telford | Old French | An iron-cutter. |
| Telo | Old French | Teliau, Th?lo, Th?liau |
| Tem | English | country |
| Teman | Hebrew | right hand, south |
| Temani | Hebrew | of Teman |
| Templar | Old French | A knight. |
| Tenenan | Old French | Tinidor, Tenedor |
| Tennyson | Old English | The son of Dennis. Wild, frenzied. Also a lover of wine. Also see Tennyson. |
| Tenzin | Tibetan/Sherpa | Protector of Dharma. A boy or girl's name. |
| Tenzing | Tibetan/Sherpa | Protector of Dharma. A boy or girl's name. |
| Teodor | Greek | The gift of God. |
| Tercan | Turkish | |
| Terence | Latin | Tender, good gracious. |
| Terje | Norse | of Thor?s spear |
| Terrel | Old English | thunderer |
| Terrence | Tender, good gracious. | |
| Terrie | Latin | Smooth and polished. |
| Terro | ||
| Terry | Greek/Latin | Greek: The harvester or reaper. Latin: Smooth and polished. A boy or girl's name. |
| Tetony | Hungarian | chieftain |
| Teulyddog | Welsh | |
| Tewdwr | Welsh | |
| Tex | American | From Texas. |
| Tezer | Turkish | |
| Thabit | Arabic | |
| Thaddeaus | Latin | couragues, praiser |
| Thaddeus | Greek | Gift of God. |
| Thai | Vietnamese | many, multiple |
| Thaliard | From Shakespeare's play Pericles. | |
| Thaman | Hindu | name of a god |
| Than | Burmese | A million. An auspicious number name. |
| Thane | Old English | A land-holding soldier. Also a Scottish clan chieftain. |
| Thanos | Greek | Noble. |
| Thatcher | Old English | roof fixer |
| Theobald | Teutonic | A bold leader of the people. |
| Theobold | Old German | the boldest |
| Theodore | Greek | Divine gift. |
| Theodoric | Teutonic | The ruler of the people. Also see Derek. |
| Theon | Greek | Godly. |
| Theophilus | Greek | beloved of God |
| Theron | Greek | The hunter. |
| Thersites | From Shakespeare's play Troilus & Cressida. | |
| Theseus | Greek | A hero of Greek legend. |
| Thibaud | Old French | |
| Thidias | From Shakespeare's play Antony & Cleopatra. | |
| Thierry | French | French form of Terence and Theodoric. |
| Thies | Dutch | Dutch diminutives of Matthew. |
| Thijs | Dutch | Dutch diminutives of Matthew. |
| Thomas | Greek | A twin. |
| Thor | Old Norse | The God of thunder in Norse mythology. |
| Thorald | Old Norse | Ruling in the manner of Thor. |
| Thoralf | Scandinavian | |
| Thorbjorn | Scandinavian | |
| Thorburn | Old Norse | Thor's warrior. |
| Thord | Scandinavian | |
| Thore | Scandinavian | |
| Thorfinn | Scandinavian | |
| Thorgeirr | Scandinavian | |
| Thorgils | Scandinavian, Anglo-Saxon | |
| Thorgrim | Scandinavian | |
| Thorkell | Scandinavian | |
| Thorleifr | Scandinavian | |
| Thormund | Old English | Thor's protection. |
| Thorne | Old English | thorn tree |
| Thornley | Old English | From the thorny clearing. |
| Thornton | Old English | From the place among the thorns. |
| Thorpe | Old English | From the farm village. |
| Thorstein | Scandinavian | |
| Thorulffr | Scandinavian | |
| Thorvald | Scandinavian | |
| Thorvid | Scandinavian | |
| Thosa | Old French | |
| Thrandr | Scandinavian | |
| Thurborn | Teutonic | dweller by Thor's stream |
| Thurio | From Shakespeare's play Two Gentlemen of Verona. | |
| Thurlow | Old English | from Thor |
| Thurso | Scottish | A Scottish placename. |
| Thurstan | Old English | Thor's stone. |
| Thurston | Norse | Thor's stone |
| Tibald | Teutonic | A bold leader of the people. |
| Tibalt | Greek | people's prince |
| Tiberius | Latin | After the River Tiber. |
| Tibold | German | A bold leader of the people. |
| Tiernan | Irish Gaelic | The descendant of a lord. |
| Tierney | Irish Gaelic | The descendant of a lord. A boy or girl's name. |
| Tihamar | Hungarian | likes silence |
| Tiki | Polynesian | One who is fetched, as in a spirit after death. |
| Tilak | Hindu | |
| Tilford | Old English | From the good man's ford. |
| Tim | Greek | Honouring God, or honoured by God. |
| Timeus | Greek | perfect |
| Timoleon | Greek | I honor what I say |
| Timon | Greek | A reward, an honour. Also from Shakespeare's play Timon of Athens. |
| Timor | After the Timor Sea. | |
| Timothy | Greek | Honouring God, or honoured by God. |
| Timur | Hebrew, Hungarian, Turkish | iron |
| Tinh | Vietnamese | mindful; aware |
| Tipene | Maori | Maori form of Stephen. |
| Titus | Latin | An old Roman name. |
| Titusz | Hungarian | dove, honored |
| Tivadar | Hungarian | gift of God |
| Tivon | Hebrew | lover of nature |
| Tobias | Hebrew | God is good. A biblical name. |
| Tobie | Hebrew | God is good. A boy or girl's name. |
| Toby | Hebrew | The Lord is good. |
| Tod | A fox or foxhunter. | |
| Todd | Old Norse from Latin | A fox or foxhunter. |
| Toft | Old English | From the site of the building. |
| Toker | Turkish | |
| Tolga | Turkish | |
| Tom | Greek | A twin. A form of Thomas. |
| Tomaj | Hungarian | name of a clan |
| Tomas | Czech/Irish/Scottish Gaelic/Spanish | A twin. A form of Thomas. |
| Tomasz | Polish | A twin. A form of Thomas. |
| Tome | Galician | |
| Tomi | Japanese | Red. |
| Tomkin | Old English | Little Tom or Thomas. |
| Tommy | Greek | A twin. A form of Thomas. |
| Tomo | Greek | A twin. A form of Thomas. |
| Tong | Vietnamese | fragrant |
| Tony | Latin | Praiseworthy, of inestimable worth. |
| Tor | Old Norse/Celtic | Old Norse: The God of thunder in Norse mythology. Celtic: A rock. |
| Tore | Old Norse | The God of thunder in Norse mythology. |
| Torin | Gaelic | The chief. |
| Tormey | Irish Gaelic | A thunder spirit. |
| Tormod | Scottish | |
| Torquil | Scottish Gaelic from Old Norse | Thor's cauldron. |
| Torr | Old English | From the tower. |
| Torrance | Latin | Smooth and polished. |
| Torsten | little Tom | Tompkin, Tomlin |
| Torvald | Old Norse | Thor the ruler. |
| Toste | Scandinavian | |
| Tostig | Anglo-Saxon, Scandinavian | |
| Touchstone | From Shakespeare's play As You Like It. | |
| Toussaint | French | All the saints. Also see Santos. |
| Tovi | Modern Hebrew | Good. |
| Townley | Old English | From the town meadow. |
| Townsend | Old English | From the towns end. |
| Toyo | Japanese | plentiful |
| Tracy | Old French | Brave. A boy or girl's name. |
| Trahaearn | Welsh | strong as iron |
| Traherne | Welsh | Of iron strength. |
| Tran | Vietnamese | A family name. |
| Tranio | From Shakespeare's play Taming of the Shrew. | |
| Tranter | Old English | wagoneer |
| Travis | Old French | From the crossing or crossroads. |
| Trefor | Welsh | From the large village. |
| Trefusis | Cornish | A placename. |
| Trelawney | Cornish | From the church village. |
| Tremayne | Cornish | From the place of the stone or rock. |
| Tremeur | Old French | Treveur |
| Trent | English | Thrifty. From the name of a river. |
| Trenus | Latin | |
| Tresco | Cornish | From a placename, one of the Isles of Scilly. |
| Trethowan | Cornish | From the farm by the sandhills. |
| Trevelyan | Cornish | From the farm at the mill. A Cornish placename. |
| Trevor | Welsh | Prudent. From the large village. |
| Trey | Middle English | third born, three |
| Trigve | Norwegian | |
| Trilby | Italian | Sings with trills. A boy or girl's name. |
| Trinculo | From Shakespeare's play The Tempest. | |
| Trinity | Latin | A trio or triad, as in the Holy Trinity. A boy or girl's name. |
| Tripp | Old English | traveler |
| Trisanu | Hindu | |
| Tristan | Celtic | The noisy one. |
| Tristen | Celtic | The noisy one. |
| Tristram | Celtic | Sad. |
| Troilus | French | place name |
| Trowbridge | Old English | From the wooden bridge. |
| Troy | Old French | Water or foot soldier. From a placename. Also the name of the ancient city in Asia Minor. |
| Truman | Old English | A trusty or faithful man. |
| Tryggvi | Scandinavian | |
| Trystan | Cornish/Welsh | The noisy one. |
| Tuart | Aboriginal | A type of Eucalypt. |
| Tuathal | Celtic | |
| Tubal | From Shakespeare's play Merchant of Venice. | |
| Tucker | Old English | A cloth-worker. |
| Tudfwlch | Welsh | |
| Tudi | Old French | |
| Tudor | Welsh | Welsh form of Theodore. Devine gift. |
| Tudur | Welsh | |
| Tugdual | Old French | Tual, Tugal, Pabu |
| Tujan | Old French | Tugen, Tujen |
| Tuncer | Turkish | |
| Tungyr | Welsh | |
| Ture | Scandinavian | |
| Turi | Polynesian | The name of a famous chief. |
| Turiau | Old French | Turio |
| Turner | Old French | A lathe-worker. |
| Turpin | Old Norse | A Finnish man of Thor. |
| Tushar | Hindu | |
| Tuvya | Hebrew | |
| Tuyen | Vietnamese | Angelic. |
| Twain | Middle English | two pieces |
| Twyford | Old English | From the double ford. |
| Tyack | Cornish | A farmer. |
| Tybalt | Teutonic | A bold leader of the people. |
| Tycho | Greek | He who hits the mark. |
| Tye | Old English | From the enclosure. |
| Tyee | Native American | chief |
| Tyler | Old English | A tiler or tile-maker. A boy or girl's name. |
| Tymon | Greek | A reward, an honour. |
| Tynan | Gaelic | The dark one. |
| Tyne | The name of an English river. A boy or girl's name. | |
| Tyrek | Ty | |
| Tyrol | After the Austrian alpine region. | |
| Tyrone | Irish | The name of a county in Northern Ireland. |
| Tyrus | Latin | person from Tyre |
| Tyson | Old French | A firebrand. |
| Tytus | Polish | An old Roman name. |
| Tzuriel | Hebrew |