| thermos | termos |
| thermosphère | termosfera |
| thermostat | termostat |
| Thermothérapie | Obróbka termiczna |
| Thermoélectricité | Efekt Peltiera |
| Theropoda | Teropody |
| Thersite | Tersytes |
| Thesium alpinum | Leniec alpejski |
| Thesmophories | Tesmoforie |
| Thespis | Tespis |
| Thessalie | Tesalia |
| Thessaloniké | Tessalonika |
| Thessalonique | Saloniki |
| Theta Centauri | Menkent |
| Theta Scorpii | Sargas |
| Theódoros Papaloukás | Theodoros Papalukas |
| Theódoros Zagorákis | Theodoros Zagorakis |
| Thiago Motta | Thiago Motta |
| thiamine | tiamina |
| Thibaud Ier de Blois | Tybald IV |
| Thibaud II de Navarre | Tybald V |
| Thibaud III de Blois | Tybald IV |
| Thibaut | Teobald |
| Thibaut Ier de Navarre | Tybald IV |
| Thibaut III de Champagne | Tybald III |
| Thibaut IV de Blois | Tybald II z Szampanii |
| Thich Nhat Hanh | Thich Nhat Hanh |
| Thick as a Brick | Thick as a Brick |
| Thiennes | Thiennes |
| Thierrens | Thierrens |
| Thierry | Teodoryk |
| Thierry Henry | Thierry Henry |
| Thierry Ier | Teoderyk I |
| Thierry IV | Teuderyk IV |
| Thierry la Fronde | Thierry Śmiałek |
| Thiers | Thiers |
| Thieux | Thieux |
| Thil | Thil |
| Thimbu | Thimphu |
| Thimphou | Thimphu |
| Thimphu | Thimphu |
| Thin Lizzy | Thin Lizzy |
| Thin-film transistor | TFT |
| Thing | Thing |
| Thingol | Thingol |
| Thinis | Tinis |
| Think tank | Think tank |
| thioarséniate | tioarsenian |
| Thioester | Tioestry |
| Thiol | Tiole |
| Thiopental | Tiopental |
| Thiophène | Tiofen |
| Thioridazin | Thioridazin |
| thiosulfate | tiosiarczan |
| Thiosulfate de sodium | Tiosiarczan sodu |
| thioéther | tioeter |
| Thiron-Gardais | Thiron Gardais |
| Thirteen | Trzynastka |
| Thiruvananthapuram | Thiruvananthapuram |
| This is England | To właśnie Anglia |
| This Time | This Time |
| Thixotropie | Tiksotropia |
| Thiès | Thies |
| Thièvres | Thièvres |
| Thiébaud Ier de Lorraine | Tybald IV |
| Thiébaud II de Lorraine | Tybald V |
| Thiébaut Ier de Bar | Tybald IV |
| Thollar | Tolar |
| tholos | tolos |
| Thom Yorke | Thom Yorke |
| Thomas | Tomasz |
| Thomas a Kempis | Tomasz z Kempis |
| Thomas Abbt | Thomas Abbt |
| Thomas Addison | Thomas Addison |
| Thomas Alva Edison | Thomas Alva Edison |
| Thomas Anders | Thomas Anders |
| Thomas Augustine Arne | Thomas Augustine Arne |
| Thomas Bayes | Thomas Bayes |
| Thomas Becket | Thomas Becket |
| Thomas Bernhard | Thomas Bernhard |
| Thomas Berthold | Thomas Berthold |
| Thomas Brdaric | Thomas Brdarić |
| Thomas Brown | Thomas Browne |
| Thomas Browne | Thomas Browne |
| Thomas Burke | Tom Burke |
| Thomas Béraud | Thomas Béraud |
| Thomas Carlyle | Thomas Carlyle |
| Thomas Cranmer | Thomas Cranmer |
| Thomas Cromwell | Thomas Cromwell |
| Thomas Crown | Afera Thomasa Crowna |
| Thomas d'Aquin | Tomasz z Akwinu |
| Thomas de Quincey | Thomas de Quincey |
| Thomas de Villeneuve | Tomasz z Villanueva |
| Thomas Doll | Thomas Doll |
| Thomas Dossèvi | Thomas Dossevi |
| Thomas d’Aquin | Tomasz z Akwinu |
| Thomas Eakins | Thomas Eakins |
| Thomas Edison | Thomas Alva Edison |
| Thomas Edmund Dewey | Thomas Dewey |
| Thomas Edward Lawrence | Thomas Edward Lawrence |
| Thomas et ses amis | Tomek i przyjaciele |
| Thomas Gainsborough | Thomas Gainsborough |
| Thomas Graham | Thomas Graham |
| Thomas Gray | Thomas Gray |
| Thomas Hardy | Thomas Hardy |
| Thomas Harris | Thomas Harris |
| Thomas Hendricks | Thomas Hendricks |
| Thomas Henry Huxley | Thomas Henry Huxley |
| Thomas Hitzlsperger | Thomas Hitzlsperger |
| Thomas Hobbes | Thomas Hobbes |
| Thomas Hunt Morgan | Thomas Hunt Morgan |
| Thomas Häßler | Thomas Häßler |
| Thomas II de Piémont | Tomasz II Zaremba |
| Thomas II Zaremba | Tomasz II Zaremba |
| Thomas Jefferson | Thomas Jefferson |
| Thomas Joannes Stieltjes | Thomas Joannes Stieltjes |
| Thomas Jonathan Jackson | Thomas Jackson |
| Thomas Klestil | Thomas Klestil |
| Thomas Kretschmann | Thomas Kretschmann |
| Thomas l'incrédule | niewierny Tomasz |
| Thomas Lawrence | Thomas Lawrence |
| Thomas Malory | Thomas Malory |
| Thomas Malthus | Thomas Malthus |
| Thomas Mann | Thomas Mann |
| Thomas Merton | Thomas Merton |
| Thomas More | Thomas More |
| Thomas Muster | Thomas Muster |
| Thomas Münzer | Thomas Münzer |
| Thomas Nagel | Thomas Nagel |
| Thomas Paine | Thomas Paine |
| Thomas Pitt | Thomas Pitt |
| Thomas Pynchon | Thomas Pynchon |
| Thomas Ravelli | Thomas Ravelli |
| Thomas Reid | Thomas Reid |
| Thomas Reiter | Thomas Reiter |
| Thomas Robert Cech | Thomas Cech |
| Thomas Samuel Kuhn | Thomas Kuhn |
| Thomas Sankara | Thomas Sankara |
| Thomas Schelling | Thomas Schelling |
| Thomas Simpson | Thomas Simpson |
| Thomas Sowell | Tomasz Sowell |
| Thomas Stafford | Thomas Stafford |
| Thomas Stearns Eliot | Thomas Stearns Eliot |
| Thomas Sørensen | Thomas Sørensen |
| Thomas Tallis | Thomas Tallis |
| Thomas Vermaelen | Thomas Vermaelen |
| Thomas Vinterberg | Thomas Vinterberg |
| Thomas von Heesen | Thomas von Heesen |
| Thomas Wolfe | Thomas Clayton Wolfe |
| Thomas Wolsey | Thomas Wolsey |
| Thomas Young | Thomas Young |
| Thomas Zan | Tomasz Zan |
| Thomas Zdebel | Tomasz Zdebel |
| Thomas-Robert Bugeaud | Thomas Robert Bugeaud |
| Thomisidae | Ukośnikowate |
| Thompson | Pistolet maszynowy Thompson |
| Thomás Mávros | Thomas Mavros |
| thon | tuńczyk |
| Thor | Thor |
| Thor Heyerdahl | Thor Heyerdahl |
| Thora | Tora |
| Thora Birch | Thora Birch |
| thoracique | piersiowy |
| Thoracoscopie | Videotorakoskopia |
| Thoralf Skolem | Thoralf Skolem |
| thorax | tułów |
| Thorbjørn Jagland | Thorbjørn Jagland |
| Thorgal | Thorgal |
| Thorigny-sur-le-Mignon | Thorigny |
| Thorin II Écu-de-Chêne | Thorin II Dębowa Tarcza |
| Thorismond | Toryzmund |
| thorium | tor |
| Thorstein Veblen | Thorstein Veblen |
| Thot | Thot |
| Thoune | Thun |
| Thourioi | Turioj |
| Thousand Sons | Thousand Sons |
| Thoutmôsis | Totmes |
| Thoutmôsis Ier | Totmes I |
| Thoutmôsis II | Totmes II |
| Thoutmôsis III | Totmes III |
| Thoutmôsis IV | Totmes IV |
| thrace | tracki |
| Thraces | Trakowie |
| Thranduil | Thranduil |
| Thrasamund | Trasamund |
| Thrash metal | Thrash metal |
| Thraupinae | Tanagry |
| Thrawn | Thrawn |
| Three Cheers for Sweet Revenge | Three Cheers for Sweet Revenge |
| Three Days Grace | Three Days Grace |
| Three Mile Island | Wypadek w elektrowni jądrowej Three Mile Island |
| Three-point Shootout | Three Point Contest |
| Threshold | Threshold |
| Threskiornis molucca | Ibis czarnopióry |
| Threskiornithidae | Ibisowate |
| Thrombocyte | Trombocyt |
| thrombocytopénie | małopłytkowość |
| Thrombocytémie essentielle | Nadpłytkowość samoistna |
| Thrombophilie | Trombofilia |
| Thrombophilie par mutation du facteur V | Czynnik V Leiden |
| Thromboxane | Tromboksan |
| thrombus | zakrzep |
| ThrustSSC | Thrust SSC |
| Thrymr | Thrym |
| thrène | tren |
| thréonine | treonina |
| Thrúd | Thrud |
| Thubten Gyatso | Dalajlama XIII |
| Thucydide | Tukidydes |
| Thug | Thugowie |
| Thuit | Le Thuit |
| Thujone | Tujon |
| Thule | Thule |
| thulium | tul |
| Thulé | Thule |
| Thumeries | Thumeries |
| Thun | Thun |
| Thunbergia | Tunbergia |
| Thunder Bay | Thunder Bay |
| Thunderbird | Thunderbird |
| Thunderbirds | Thunderbirds |
| Thunderbirds de Seattle | Seattle Thunderbirds |
| Thunderstick | Thunderstick |
| thune | forsa |
| Thurgood Marshall | Thurgood Marshall |
| Thurgovie | Turgowia |
| Thuringe | Turyngia |
| Thuringien | Turyńczyk |
| Thuringienne | Turyńczyk |
