| thwack | slag |
| thwart | tillintetgöra |
| thwarting | omintetgörande |
| THX | THX |
| thy | din |
| Thyatira | Thyatira |
| Thyborøn-Harboøre | Thyborøn-Harboøre kommun |
| Thyestes | Thyesthes |
| Thyholm municipality | Thyholms kommun |
| Thylacine | Pungvarg |
| Thylacinidae | Pungvarg |
| Thylacinus | Pungvarg |
| thyme | timjan |
| Thymelaeaceae | Tibastväxter |
| Thymine | Tymin |
| thymus | bräss |
| Thyone | Thyone |
| Thyra | Tyra Danebot |
| Thyreophora | Thyreophorer |
| thyroid | sköldkörtel |
| Thyroid cancer | Sköldkörtelcancer |
| thyroid gland | sköldkörtel |
| thyroxine | tyroxin |
| Thysanura | Fjällborstsvansar |
| ThyssenKrupp | ThyssenKrupp |
| Théoden | Théoden |
| Théodore Chassériau | Théodore Chassériau |
| Théodore Guérin | Théodore Guérin |
| Théodore Géricault | Théodore Géricault |
| Théophile Gautier | Théophile Gautier |
| Thérèse de Lisieux | Thérèse av Jesusbarnet |
| Thônex | Thônex |
| Thörigen | Thörigen |
| Thürnen | Thürnen |
| ti | si |
| Tia Hellebaut | Tia Hellebaut |
| Tiago Mendes | Tiago Mendes |
| Tiago Monteiro | Tiago Monteiro |
| Tiamat | Tiamat |
| Tian Shan | Tianshan |
| Tiananmen | Himmelska fridens port |
| Tiananmen Square | Himmelska fridens torg |
| Tiananmen Square protests | Massakern på Himmelska fridens torg |
| Tianjin | Tianjin |
| tiara | tiara |
| Tiber | Tibern |
| Tiber Island | Tiberön |
| Tiberios III | Tiberios III |
| Tiberium | Tiberium |
| Tiberius | Tiberius |
| Tiberius Claudius Narcissus | Narkissos |
| Tiberius Gracchus | Tiberius Gracchus |
| Tiberius Gracchus Major | Tiberius Gracchus |
| Tiberius I | Tiberius |
| Tiberius II Constantine | Tiberios III |
| Tiberius Nero | Tiberius Claudius Nero |
| Tiberius Sempronius Gracchus | Tiberius Gracchus |
| Tibesti Mountains | Tibesti |
| Tibet | Tibet |
| Tibet Autonomous Region | Tibet |
| Tibetan | tibetanska |
| Tibetan antelope | Rådjur |
| Tibetan Buddhism | Tibetansk buddhism |
