| tronfølger | crown prince |
| troper | tropics |
| tropeskov | tropical forest |
| tropisk plante | tropical plant |
| tropisk regnskov | tropical rain forest |
| Tropisk Storm Arlene | Tropical Storm Arlene |
| tropopause | tropopause |
| Troposfære | Troposphere |
| Tropæolum-familien | Tropaeolaceae |
| tror du på Gud_ | do you believe in God |
| troskab | fealty |
| Trotskisme | Trotskyism |
| Trotyl | Trinitrotoluene |
| troværdig | believable |
| Troy | Troy |
| Trubaduren | Il trovatore |
| truck | forklift |
| Trud | Þrúðr |
| Trudgelmer | Þrúðgelmir |
| True Romance | True Romance |
| truede dyrearter | endangered animal species |
| truede plantearter | endangered plant species |
| truet | threatened |
| Trujillo | Trujillo |
| Trulli | Trullo |
| Truman Capote | Truman Capote |
| Trumandoktrinen | Truman Doctrine |
| trumf | trump |
| Trundholm Kommune | Trundholm municipality |
| Tryfæna | Tryphena |
| Tryggve Olavsson | Tryggve Olafsson |
| Trygve Lie | Trygve Lie |
| tryk | pressure |
| Trykkefrihed | Freedom of press |
| trykkeriarbejde | printing work |
| trykudstyr | pressure equipment |
| trylle væk | spirit away |
| Tryllefløjten | The Magic Flute |
| tryllekunstner | conjurer |
| Trym | Thrymr |
| Tryptofan | Tryptophan |
| Trysil | Trysil |
| trådløs | wireless |
| Trådløs basisstation | Wireless access point |
| Trådløst netkort | Wireless network interface card |
| træ | wood |
| Træ- | Boise |
| træbevoksning | woodland |
| Træblæser | Wood |
| Træbregne | Cyathea |
| Træbregne-familien | Cyatheaceae |
| Træbregne-ordenen | Cyatheales |
| træffe | meet |
| træfning | combat |
| træforarbejdende industri | forest exploitation |
| træk | animal migration |
| trækdyr | draught animal |
| trækfugle | migratory bird |
| trækharmonika | accordion |
| trække | blister |
| Trække strå | Drawing straws |
| Trække ud | Yank-off |
| trække vejret | breathe |
| trækul | charcoal |
| træl | slave |
| trældom | thralldom |
| Træløber | Common Treecreeper |
| træløs | treeless |
| Træna | Træna |
| Træning | Train |
| træprodukt | wood product |
| Træsejlere | Treeswift |
| Træskæg | Treebeard |
| træt | tired |
| trætidsbestemmelse | dendrochronology |
| trættende | tedious |
| Trævlet Palmelilje | Yucca filamentosa |
| Træænder | Dendrocygninae |
| Tré Cool | Tré Cool |
| Trójmiasto | Tricity |
| Trøffel | Tuber |
| Trøgstad | Trøgstad |
| trøje | shirt |
| Trøndelag | Trøndelag |
| trøske | candidiasis |
| trøst | solace |
| TS | TS |
| Tsar Bomba | Tsar Bomba |
| Tskhinvali | Tskhinvali |
| Tsodilo | Tsodilo |
| Tsuki-yomi | Tsukuyomi |
| Tsunami | Tsunami |
| TTT Eindhoven | Eindhoven Team Time Trial |
| Tu bishvat | Tu Bishvat |
| Tuareg | Tuareg |
| Tuba | Tuba |
| Tuberkulose | Tuberculosis |
| Tuborg | Tuborg Brewery |
| Tucson | Tucson |
| Tucuman | Tucumán |
| Tud | Bill |
| tudse | toad |
| Tudselilje | Tricyrtis |
| tudser | toad |
| Tuesday | Tuesday |
| Tughlak-dynastiet | Tughlaq dynasty |
| Tukums distrikt | Tukums District |
| Tulcea | Tulcea County |
| Tulipan | Tulip |
| Tulipantræ | Liriodendron |
| Tulku Urgyen Rinpoche | Tulku Urgyen Rinpoche |
| Tullamore | Tullamore |
| Tulum | Tulum |
| tummel | tumult |
| tumor | neoplasm |
| Tumorsuppressorgen | Tumor suppressor gene |
| tumult | tumult |
| tun | tuna |
| tundra | tundra |
| tuneser | Tunisian |
| Tunesien | Tunisia |
| Tunfisk | Tuna |
| tung | heavy |
| tunge | tongue |
| tungekysse | French kiss |
| tungetale | glossolalia |
| Tungmetal | Heavy metals |
| tungmetaller | heavy metal |
| tungsten | tungsten |
| Tungt vand | Heavy water |
| Tunguska | Podkamennaya Tunguska River |
| Tunguska-eksplosionen | Tunguska event |
| Tunis | Tunis |
| tunnel | tunnel |
| Tunsberghus | Tønsberg Fortress |
| Tuomas Holopainen | Tuomas Holopainen |
| Tupac Amaru Shakur | Tupac Shakur |
| Tupac Shakur | Tupac Shakur |
| Tupilak | Tupilaq |
| Tupolev | Tupolev |
| Tur-retur | Round ticket |
| Turandot | Turandot |
| turban | turban |
| turbine | turbine |
| Turbo Pascal | Turbo Pascal |
| Turbonegro | Turbonegro |
| turbulens | turbulence |
| Turda | Turda |
| Ture Nerman | Ture Nerman |
| Turing | Turing |
| Turing Award | Turing Award |
| Turing-test | Turing test |
| Turingmaskine | Turing machine |
| turisme | tourism |
| turisme i landdistrikterne | agritourism |
| turismens indvirkning på miljøet | environmental impact of tourism |
| turist | tourist |
| turkish delight | Turkish delight |
| Turkmener | Turkmen people |
| Turkmenistan | Turkmenistan |
| Turkmenske Sovjetsocialistiske Republik | Turkmen SSR |
| Turkmenske SSR | Turkmen SSR |
| Turks- og Caicosøerne | Turks and Caicos Islands |
| Turku | Turku |
| Turning Torso | Turning Torso |
| Turntablism | Turntablism |
| turteldue | turtle dove |
| tusind | thousand |
| Tusind og en nat | One Thousand and One Nights |
| tusind tak | thank you very much |
| tusindben | millipede |
| tusinde | thousand |
| tusindfryd | daisy |
| Tusindårsfalken | Millennium Falcon |
| Tuska Open Air | Tuska Open Air Metal Festival |
| Tusmørkestråler | Crepuscular rays |
| Tut Ankh Amon | Tutankhamun |
| Tutu | Ballet tutu |
| Tutuila | Tutuila |
| Tuva | Tuva |
| Tuva Novotny | Tuva Novotny |
| Tuvalu | Tuvalu |
| Tux | Tux |
| Tuzla | Tuzla |
| tv | television |
| Tv reklame | Television advertisement |
| tv-program | television program |
| tvang | coercion |
| tvebak | rusk |
| Tvebo | Plant sexuality |
| Tvedestrand | Tvedestrand |
| tvekamp | duel |
| tvelyd | diphthong |
| Tver | Tver |
| Tvetand | Dead-nettle |
| tvetydig | ambiguous |
| tvetydighed | ambiguity |
