| Thun | Thun |
| Thunbergia | Thunbergia |
| thunder | trueno |
| thunder and lightning | tormenta |
| Thunder Force series | Thunder Force |
| Thunderball | Operación Trueno |
| Thunderbirds | Thunderbirds |
| thunderbolt | relámpago |
| Thunderbolts | Tormenta |
| ThunderCats | Thundercats |
| thunderclap | tronido |
| thundercloud | nubarrón |
| thunderous | estruendoso |
| thunderstorm | tormenta |
| thunderstruck | estupefacto |
| thundery | tormentoso |
| Thundorf in Unterfranken | Thundorf |
| Thunnus | Thunnus |
| Thunstetten | Thunstetten |
| Thur | Jueves |
| Thurgau | Cantón de Turgovia |
| thurifer | turiferario |
| Thurii | Turios |
| Thuringia | Turingia |
| Thuringian Forest | Bosque de Thüringen |
| Thuringii | Turingios |
| Thurisaz | Þurs |
| Thurs | Jueves |
| Thursday | jueves |
| Thursdays | Jueves |
| thus | por consiguiente |
| thus far | hasta ahora |
| Thus Spake Zarathustra | Así habló Zaratustra |
| Thus Spoke Zarathustra | Así habló Zaratustra |
| Thusis | Thusis |
| Thutmose | Tutmosis |
| Thutmose I | Tutmosis I |
| Thutmose II | Tutmosis II |
| Thutmose III | Tutmosis III |
| Thutmose IV | Tutmosis IV |
| thwack | golpe |
| thwart | impedir |
| thwarting | frustración |
| THX | THX |
| thy | tu |
| Thyestes | Tiestes |
| Thylacine | Thylacinus cynocephalus |
| Thylacinus | Thylacinidae |
| Thylacoleo | Thylacoleo carnifex |
| Thylacosmilus | Thylacosmilus |
| thylakoid | tilacoide |
| Thylamys | Thylamys |
| thyme | tomillo |
| Thymelaeaceae | Thymelaeaceae |
| Thymine | Timina |
| thymol | timol |
| Thyni | Tinios |
| Thyolo District | Distrito de Thyolo |
| Thyra | Thyra Danebod |
| Thyreophora | Thyreophora |
| thyristor | tiristor |
| thyroid | tiroides |
| Thyroid cancer | Cáncer tiroideo |
| thyroid gland | tiroides |
| thyroidectomy | tiroidectomía |
| Thysanura | Thysanura |
| Théoden | Théoden |
| Théodore Chassériau | Théodore Chassériau |
| Théodore de Banville | Théodore de Banville |
| Théodore Guérin | Théodore Guérin |
| Théodore Géricault | Théodore Géricault |
| Théodore Rousseau | Théodore Rousseau |
| Théodore-Adrien Sarr | Théodore-Adrien Sarr |
| Théodwyn | Personajes secundarios de El señor de los anillos |
| Théophile Gautier | Théophile Gautier |
| Théophile Steinlen | Théophile Alexandre Steinlen |
| Théophraste Renaudot | Teophraste Renaudot |
| Thérèse de Lisieux | Teresa de Lisieux |
| Théâtre Optique | Teatro óptico |
| Thônex | Thônex |
| Thörigen | Thörigen |
| Thābit ibn Qurra | Thabit Ibn Qurrá |
| ti | si |
| TI-BASIC | TI-Basic |
