| thirteenth | trettende |
| thirty | tredive |
| Thirty Years' War | Trediveårskrigen |
| thirty-eight | otteogtredive |
| thirty-five | femogtredive |
| thirty-four | fireogtredive |
| thirty-nine | niogtredive |
| thirty-one | enogtredive |
| thirty-seven | syvogtredive |
| thirty-six | seksogtredive |
| thirty-three | treogtredive |
| thirty-two | toogtredive |
| this | dette |
| this afternoon | i eftermiddag |
| this evening | i aften |
| This Gun for Hire | Lejemord |
| This Is Spinal Tap | Spin̈al Tap |
| this morning | her til morgen |
| This side down | Lav |
| This way in | Bøn |
| This Woman Is Dangerous | Tilgivelse |
| Thisted | Thisted Kommune |
| Thisted FC | Thisted Fodbold Club |
| Thisted municipality | Thisted Kommune |
| thistle | tidsel |
| Thit Jensen | Thit Jensen |
| thither | did |
| Thom Yorke | Thom Yorke |
| Thomas | Thomas |
| Thomas Alva Edison | Thomas Edison |
| Thomas Aquinas | Thomas Aquinas |
| Thomas Arne | Thomas Arne |
| Thomas Becket | Thomas Becket |
| Thomas Berthold | Thomas Berthold |
| Thomas Carlyle | Thomas Carlyle |
| Thomas Cech | Thomas Cech |
| Thomas Doll | Thomas Doll |
| Thomas Edison | Thomas Edison |
| Thomas Gray | Thomas Gray |
| Thomas Hansen Kingo | Thomas Kingo |
| Thomas Hardy | Thomas Hardy |
| Thomas Harris | Thomas Harris |
| Thomas Hobbes | Thomas Hobbes |
| Thomas Häßler | Thomas Hässler |
| Thomas Jefferson | Thomas Jefferson |
| Thomas Klestil | Thomas Klestil |
| Thomas Malthus | Thomas Malthus |
| Thomas Mann | Thomas Mann |
| Thomas More | Thomas More |
| Thomas Müntzer | Thomas Müntzer |
| Thomas Nagel | Thomas Nagel |
| Thomas of Celano | Thomas af Celano |
| Thomas Paine | Thomas Paine |
| Thomas Pynchon | Thomas Pynchon |
| Thomas Ravelli | Thomas Ravelli |
| Thomas Reiter | Thomas Reiter |
| Thomas Samuel Kuhn | Thomas Samuel Kuhn |
| Thomas Schelling | Thomas Schelling |
| Thomas Sowell | Thomas Sowell |
| Thomas Sørensen | Thomas Sørensen |
| Thomas Tallis | Thomas Tallis |
| Thomas the Apostle | Thomas |
| Thomas Vanek | Thomas Vanek |
| Thomas Vinterberg | Thomas Vinterberg |
| Thomas Wolsey | Thomas Wolsey |
| Thomas Young | Thomas Young |
| Thomasine Christine Gyllembourg-Ehrensvärd | Thomasine Gyllembourg |
| Thompson | Thompson maskinpistol |
| Thompson submachine gun | Thompson maskinpistol |
| Thomson and Thompson | Dupond og Dupont |
| Thor | Thor |
| Thor Heyerdahl | Thor Heyerdahl |
| Thora | Thora |
| Thoracic diaphragm | Pessar |
| Thorbjørn Jagland | Thorbjørn Jagland |
| thorium | thorium |
| thorn | torn |
| thorn apple | pigæble |
| Thornback ray | Sømrokke |
| thorp | torp |
| Thorsberg moor | Torsbjerg Mose |
| Thorvald Stauning | Thorvald Stauning |
| Thot | Thoth |
| Thoth | Thoth |
| thou | du |
| though | dog |
| thought | tanke |
| thought police | tankepoliti |
| thousand | tusinde |
| Thousand years old | Millennium |
| Thrace | Thrakien |
| Thracia | Thrakien |
| Thracian | Thrakien |
| thralldom | trældom |
