| uniforme | monotone |
| uniforme deportivo | survêtement |
| Uniforme escolar japonés | Sailor fuku |
| uniformemente | uniformément |
| uniformidad | consentement |
| Uniformismo | Uniformitarisme |
| Unikonta | Unikonta |
| unilateral | unilatéral |
| unilateralismo | unilatéralisme |
| Unilever | Unilever |
| Union Económica Belgo-Luxemburguesa | Union économique belgo-luxembourgeoise |
| Union Europea | Union européenne |
| Union Internationale des Chemins de Fer | Union internationale des chemins de fer |
| Union Pacific | Union Pacific |
| Union Sportive Arlequine Perpignan | Union sportive arlequins perpignanais |
| Union Sportive Créteil-Lusitanos | Union sportive Créteil-Lusitanos |
| Union Station | Gare Union |
| Unione Calcio AlbinoLeffe | UC Albinoleffe |
| Unione Calcio Sampdoria | UC Sampdoria |
| Unione Sportiva Avellino | US Avellino |
| Unione Sportiva Città di Palermo | US Palerme |
| Unione Sportiva Grosseto Football Club | US Grosseto FC |
| Unione Sportiva Lecce | US Lecce |
| Unione Sportiva Pro Vercelli Calcio | US Pro Vercelli |
| Unione Sportiva Triestina Calcio | US Triestina |
| Unipartidismo | Parti unique |
| UniPers | UniPers |
| unir | lier |
| unir en matrimonio | unir |
| Uniramia | Uniramia |
| unirse | s'unir |
| unirse en | allié |
| Unis | Ounas |
| unisex | unisexe |
| unisexual | unisexe |
| unisonancia | unisson |
| unitaria | unitaire |
| unitarianismo | unitarisme |
| unitario | unitarien |
| unitarismo | unitarisme |
| United Airlines | United Airlines |
| United Buddy Bears | Les Oursons Unis |
| United Center | United Center |
| UNITED for Intercultural Action | United for Intercultural Action |
| United Fruit Company | United Fruit Company |
| United Microelectronics Corporation | UMC |
| United Paramount Network | United Paramount Network |
| United Parcel Service | United Parcel Service |
| United States Agency for International Development | Agence des États-Unis pour le développement international |
| United States Geological Survey | United States Geological Survey |
| United World Chart | United World Chart |
| UNIVAC | Sperry Univac |
| universal | général |
