| thermohardend | termofraguante |
| Thermoharder | Plástico termoestable |
| Thermokoppel | Termopar |
| Thermoluminescentie | Termoluminiscencia |
| thermometer | termómetro |
| thermonucleair | termonuclear |
| thermoplast | termoplástico |
| thermoplastisch | termoplástico |
| Thermopylae | Termópilas |
| Thermoregulatie | Termorregulación |
| thermosfeer | termosfera |
| thermosfles | termo |
| thermoskan | termo |
| thermostaat | termostato |
| Theropoda | Theropoda |
| Thersites | Tersites |
| thesaurie | tesorería |
| thesaurier | administrador |
| thesaurus | diccionario de sinónimos |
| these | tesis |
| Theseus | Teseo |
| Thesmophoria | Tesmoforias |
| Thespiae | Tespias |
| Thesprotia | Tesprótida |
| Thessalië | Tesalia |
| Thessaloniki | Tesalónica |
| Thetis | Tetis |
| Theudebert I | Teodeberto I |
| Theudebert II | Teodeberto II |
| Theuderik I | Teodorico I de Austrasia |
| Theuderik I van Austrasië | Teodorico I de Austrasia |
| Theuderik II | Teoderico II |
| Theuderik III | Teoderico III |
| Theuderik IV | Teodorico IV |
| Theudis | Teudis |
| Theudoald | Teodebaldo |
| theïsme | teísmo |
| Theïstisch evolutionisme | Evolución teísta |
| Thiago Motta | Thiago Motta |
| Thibron | Tibrón |
| Thich Nhat Hanh | Thich Nhat Hanh |
| Thick As A Brick | Thick as a Brick |
| Thierachern | Thierachern |
| Thierhaupten | Thierhaupten |
| Thierrens | Thierrens |
| Thierry Boutsen | Thierry Boutsen |
| Thierry Henry | Thierry Henry |
| Thiers | Distrito de Thiers |
| thijm | tomillo |
| Thijs | Matías |
| Thimphu | Timbu |
| Thin client | Cliente liviano |
| Thin Film Transistor | TFT |
| Thin Lizzy | Thin Lizzy |
| thinner | diluyente |
| Thiofeen | Tiofeno |
| Thiol | Tiol |
| Thionylchloride | Cloruro de tionilo |
| Thirteen | Thirteen |
| Thirteen Senses | Thirteen senses |
| This Is The Last Time | This Is the Last Time |
| Thiudimir | Teodomiro |
| Thjazi | Þjazi |
| Thoetmoses I | Tutmosis I |
| Thoetmoses II | Tutmosis II |
| Thoetmoses IV | Tutmosis IV |
| Thoetmosis I | Tutmosis I |
| Thoetmosis II | Tutmosis II |
| Thoetmosis III | Tutmosis III |
| Thoetmosis IV | Tutmosis IV |
| Tholos | Tholos |
| Thom Karremans | Thomas Karremans |
| Thom Yorke | Thom Yorke |
| Thomas | Tomás |
| Thomas a Kempis | Tomás de Kempis |
| Thomas Arne | Thomas Augustine Arne |
| Thomas Bayes | Thomas Bayes |
| Thomas Becket | Tomás Becket |
| Thomas Beecham | Thomas Beecham |
| Thomas Bernhard | Thomas Bernhard |
| Thomas Browne | Thomas Browne |
| Thomas Burke | Tom Burke |
| Thomas Carlyle | Thomas Carlyle |
| Thomas Cranmer | Thomas Cranmer |
| Thomas Dekker | Thomas Dekker |
| Thomas Edison | Thomas Alva Edison |
| Thomas Edward Lawrence | Thomas Edward Lawrence |
| Thomas Forstner | Thomas Forstner |
| Thomas Friedman | Thomas Friedman |
| Thomas Gainsborough | Thomas Gainsborough |
| Thomas Girtin | Thomas Girtin |
| Thomas Gray | Thomas Gray |
| Thomas Hardy | Thomas Hardy |
| Thomas Harris | Thomas Harris |
| Thomas Hitzlsperger | Thomas Hitzlsperger |
| Thomas Hobbes | Thomas Hobbes |
| Thomas Hunt Morgan | Thomas Hunt Morgan |
| Thomas Huxley | Thomas Henry Huxley |
| Thomas Häßler | Thomas Häßler |
| Thomas I van Savoye | Tomás I de Saboya |
| Thomas Jefferson | Thomas Jefferson |
| Thomas Klestil | Thomás Klestil |
| Thomas Kuhn | Thomas Kuhn |
| Thomas Lowry | Thomas Lowry |
| Thomas Malory | Thomas Malory |
| Thomas Malthus | Thomas Malthus |
| Thomas Mann | Thomas Mann |
| Thomas Marshall | Thomas Marshall |
| Thomas Merton | Thomas Merton |
| Thomas Midgley | Thomas Midgley |
| Thomas More | Tomás Moro |
| Thomas Muster | Thomas Muster |
| Thomas Müntzer | Thomas Müntzer |
| Thomas Nagel | Thomas Nagel |
| Thomas Paine | Thomas Paine |
| Thomas Pynchon | Thomas Pynchon |
| Thomas Raffles | Thomas Stamford Raffles |
| Thomas Ravelli | Thomas Ravelli |
| Thomas Sackville | Thomas Sackville |
| Thomas Sankara | Thomas Sankara |
| Thomas Seebeck | Thomas Johann Seebeck |
| Thomas Simpson | Thomas Simpson |
| Thomas Stonewall Jackson | Thomas Jonathan Jackson |
| Thomas Sørensen | Thomas Sørensen |
| Thomas Tallis | Thomas Tallis |
| Thomas Tew | Thomas Tew |
| Thomas van Aquino | Tomás de Aquino |
| Thomas van Brotherton | Tomás de Brotherton |
| Thomas van Villanova | Tomás de Villanueva |
| Thomas van Woodstock | Tomás de Woodstock |
| Thomas Vermaelen | Thomas Vermaelen |
| Thomas Vinterberg | Dane Vinterberg |
| Thomas Wyatt | Thomas Wyatt |
| Thomas Young | Thomas Young |
| Thomas-theorema | Teorema de Thomas |
| Thompson | Subfusil Thompson |
| Thompson pistoolmitrailleur | Subfusil Thompson |
| Thomson | Thomson SA |
| Thomsongazelle | Gacela de Thomson |
| Thonburi | Thonburi |
| Thor | Thor |
| Thor Heyerdahl | Thor Heyerdahl |
| Thora | Torá |
| Thora Birch | Thora Birch |
| thorax | pecho |
| Thorgal | Thorgal |
| Thorin Eikenschild | Thorin Escudo de Roble |
| Thorismund | Turismundo |
| thorium | torio |
| Thorne systeem | Sistema Thorne |
| Thorondor | Thorondor |
| Thorstein Veblen | Thorstein Veblen |
| Thoth | Tot |
| Thousand Oaks | Thousand Oaks |
| Thracisch | Idioma tracio |
| Thracië | Tracia |
| Thraciërs | Tracios |
| Thranduil | Thranduil |
| Thrasamund | Trasamundo |
| Thrash metal | Thrash metal |
| Thrashmetal | Thrash metal |
| Thrasybulus | Trasíbulo |
| Thrasybulus van Athene | Trasíbulo |
| Thrasymachos | Trasímaco |
| thread | subproceso |
| Three days grace | Three Days Grace |
| Three Mile Island | Three Mile Island |
| Three Stooges | Los tres chiflados |
| thriller | película de suspenso |
| Thrinaxodon | Thrinaxodon |
| Thrombotische thrombocytopenische purpura | Púrpura trombocitopénica trombótica |
| Through the Looking Glass | A través del espejo y lo que Alicia encontró allí |
| Thrudgelmir | Þrúðgelmir |
| Thrymr | Thrym |
| Thuban | Thuban |
| Thubten Gyatso | Thubten Gyatso |
| Thucydides | Tucídides |
| Thuggee | Thuggee |
| thuis | casa |
| thuis- | a casa |
| Thuisbioscoop | Cine en casa |
| thuisblijvend | hogareño |
| thuisfront | casa |
| thuishoren | deber estar |
| thuiskomen | regresar |
| thuiskomst | regreso al hogar |
| Thuisonderwijs | Educación en el hogar |
| Thuiswinkelen | Infomercial |
| thuiszitter | hombre hogareño |
| Thuja | Thuja |
| Thujon | Tuyona |
| Thule | Thule |
| Thule Air Base | Pituffik |
| Thule Gesellschaft | Sociedad Thule |
| thulium | tulio |
| Thullium | Tulio |
| Thun | Thun |
| Thunbergia | Thunbergia |
| Thunderball | Operación Trueno |
| Thunderbirds | Thunderbirds |
| Thundorf | Thundorf |
| Thundorf in Unterfranken | Thundorf |
| Thunstetten | Thunstetten |
| Thurgau | Cantón de Turgovia |
| Thurii | Turios |
| Thury | Thury |
| Thusis | Thusis |
| Thuya | Yuya y Tuya |
| THX | THX |
| Thyestes | Tiestes |
| Thylacoleo | Thylacoleo carnifex |
| Thymine | Timina |
