| undtagelse | Ausnahme |
| undtagelsen bekræfter regelen | Ausnahmen bestätigen die Regel |
| undtagelsesbestemmelser | Notstandsrecht |
| Undtagelsestilstand | Ausnahmezustand |
| undtagelsesvis | außerordentlich |
| undtagen | aber |
| undulat | Wellensittich |
| Undvigelseshastighed | Kosmische Geschwindigkeiten |
| UNESCO | UNESCO |
| UNFCCC | Klimarahmenkonvention der Vereinten Nationen |
| UNFPA | Bevölkerungsfonds der Vereinten Nationen |
| ung | jugendlich |
| ungarer | Ungar |
| Ungarn | Ungarn |
| Ungarns fodboldlandshold | Ungarische Fußballnationalmannschaft |
| ungarsk | ungarisch |
| ungarske | ungarisch |
| Ungarske konger | Liste der ungarischen Herrscher |
| Ungarske runer | Ungarische Runen |
| Ungdom | Jugend |
| Ungdomsfilm | Jugendfilm |
| Ungdomshuset | Ungdomshuset |
| Ungdomsorganisation | Jugendbewegung |
| unge | Balg |
| unger | Junges |
| ungfugl | Küken |
| Unghegelianerne | Junghegelianer |
| ungkarl | Junggeselle |
| ungmo | Mädchen |
| Ungt Bosnien | Mlada Bosna |
| UNHCR | Hoher Flüchtlingskommissar der Vereinten Nationen |
| unheldig | unglücklich |
| UNICEF | UNICEF |
| UNICEF Goodwill-ambassadører | Liste der UNICEF-Botschafter |
| Unicode | Unicode |
| unicykel | Einrad |
| Unidad Popular | Unidad Popular |
| UNIDO | Organisation der Vereinten Nationen für industrielle Entwicklung |
| Uniejów | Uniejów |
| Unified Process | Rational Unified Process |
| Uniform | Uniform |
| Uniform Resource Locator | Uniform Resource Locator |
| UNII-bånd | U-NII |
| Unilever | Unilever |
| Unimog | Unimog |
| union | Vereinigung |
| Union City | Union City |
| Union Theological Seminary | Union Theological Seminary in the City of New York |
| Unionen Sydafrika | Südafrikanische Union |
| Unirally | Unirally |
| Uniramia | Tracheentiere |
| UNITA | União Nacional para a Independência Total de Angola |
| Unitarisme | Unitarismus |
| United Airlines | United Airlines |
| United Nations African Union Mission in Darfur | United Nations African Union Mission in Darfur |
| United Nations Environment Programme | Umweltprogramm der Vereinten Nationen |
| United Nations Office on Drugs and Crime | United Nations Office on Drugs and Crime |
| United Nations Protection Force | United Nations Protection Force |
| United States Air Force | United States Air Force |
| United States Army | United States Army |
| United States Army Special Forces | United States Army Special Forces Command |
| United States Coast Guard | United States Coast Guard |
| United States Holocaust Memorial Museum | United States Holocaust Memorial Museum |
| United States Marine Corps | United States Marine Corps |
| United States Navy | United States Navy |
| Unitær matrix | Unitäre Matrix |
| univers | Weltall |
| Universal Media Disc | Universal Media Disc |
| Universal Plug and Play | Universal Plug and Play |
| Universal Product Code | Universal Product Code |
| Universal Serial Bus | Universal Serial Bus |
| Universal Studios | Universal Studios |
| Universal Transverse Mercator | UTM-Koordinatensystem |
| Universalisme | Universalismus |
| Universel anæstesi | Narkose |
| Universet | Universum |
| Universiteit Leiden | Universität Leiden |
| Universiteit van Amsterdam | Universität von Amsterdam |
| universitet | Uni |
| Universitetet i Oslo | Universität Oslo |
| Universitetshospital | Universitätsklinikum |
| University of Chicago | University of Chicago |
| University of Hawaii | University of Hawaii System |
| University of Pennsylvania | University of Pennsylvania |
| University of St Andrews | Universität St Andrews |
| University of Tasmania | University of Tasmania |
| University of Washington | University of Washington |
| UNIX | Unix |
| Unix-skal | Unix-Shell |
| Unnur Birna Vilhjálmsdóttir | Unnur Birna Vilhjálmsdóttir |
| unormal | abnormal |
| UNPO | UNPO |
| UNRRA | United Nations Relief and Rehabilitation Administration |
| Unse | Unze |
| Unst | Unst |
| Unsuk Chin | Chin Un-suk |
| Unter den Linden | Unter den Linden |
| ununbium | Ununbium |
| ununhexium | Ununhexium |
| ununoctium | Ununoctium |
| ununpentium | Ununpentium |
| ununquadium | Ununquadium |
