| treasure chest | skattekiste |
| treasure hunt | skattejagt |
| Treasury Secretary | Finansminister |
| treat | behandle |
| treatise | afhandling |
| treatment | behandling |
| treaty | traktat |
| Treaty of Berlin | Berlinkonferencen |
| Treaty of Brest-Litovsk | Brest-Litovsk-freden |
| Treaty of Brussels | Bruxelles-Traktaten |
| Treaty of Brömsebro | Freden i Brömsebro |
| Treaty of Frederiksborg | Freden i Frederiksborg |
| Treaty of Kiel | Freden i Kiel |
| Treaty of Knäred | Freden i Knäred |
| Treaty of Lisbon | Reformtraktaten |
| Treaty of Lübeck | Freden i Lübeck |
| Treaty of Nanking | Nanjing traktaten |
| Treaty of Nice | Nice-traktaten |
| Treaty of Nystad | Freden i Nystad |
| Treaty of Paris | Pariserdeklarationen |
| Treaty of peace with Italy | Pariserfreden |
| Treaty of Portsmouth | Portsmouth-traktaten |
| Treaty of Rastatt | Første kongres i Rastatt |
| Treaty of Ribe | Ribebrevet |
| Treaty of Rome | Rom-traktaten |
| Treaty of Roskilde | Freden i Roskilde |
| Treaty of Stettin | Freden i Stettin |
| Treaty of Stralsund | Fredsaftalen i Stralsund |
| Treaty of the Triple Alliance | Tripelalliancen |
| Treaty of Tordesillas | Traktaten i Tordesillas |
| Treaty of Verdun | Traktaten i Verdun |
| Treaty of Versailles | Versailles-freden |
| Treaty of Vienna | Freden i Wien |
| Trebinje | Trebinje |
| Trebinje Region | Trebinje |
| Treblinka | Treblinka |
| Treblinka extermination camp | Treblinka |
| Trebonianus Gallus | Trebonianus Gallus |
| tree | træ |
| Tree data structure | Træ |
| tree planting | tilplantning |
| Tree rotation | Rotation |
| Tree view | Træ |
| Tree-ring | Årring |
| tree-ring dating | trætidsbestemmelse |
| Treebeard | Træskæg |
| treeless | træløs |
| Treeman | Ente |
| Treene | Trenen |
| Treeswift | Træsejlere |
| trefoil | trekløver |
| Trehøje | Trehøje Kommune |
| Treia | Treja |
| Trelleborg | Trelleborg |
| Trelleborg Municipality | Trelleborg |
| tremble | ryste |
| Tremiti Islands | Isole Tremiti |
| Tremolo arm | Tremolo |
| trench warfare | skyttegravskrig |
