| ubåtsbekämpande | antisommergibile |
| Ubåtsklass Typ IX | U-Boot Tipo IX |
| Ubåtsklass Typ VII | U-Boot Tipo VII |
| UC Albinoleffe | Unione Calcio AlbinoLeffe |
| UC Sampdoria | Unione Calcio Sampdoria |
| UCAV | Unmanned Combat Air Vehicle |
| Uchta | Uchta |
| UCI | Unione Ciclistica Internazionale |
| UCI ProTour | UCI ProTour |
| Ud | Oud |
| UD Almería | Unión Deportiva Almería |
| UD Las Palmas | Unión Deportiva Las Palmas |
| UD Leiria | União Leiria |
| UD Salamanca | Unión Deportiva Salamanca |
| UD Vecindario | Unión Deportiva Vecindario |
| Uday Hussein | Uday Saddam Hussein |
| udda | impari |
| Uddatalsmetoden | Metodo Sainte-Laguë |
| udde | capo |
| Uddevalla kommun | Uddevalla |
| UDDI | Universal Description Discovery and Integration |
| Udine | Udine |
| Udinese Calcio | Udinese Calcio |
| Udmurtien | Udmurtia |
| Udmurtiska | Lingua udmurt |
| Udo Dirkschneider | Udo Dirkschneider |
| UDP | User Datagram Protocol |
| Udzima wa ya Masiwa | Udzima wa ya Masiwa |
| Uebeschi | Uebeschi |
| UEFA | UEFA |
| UEFA Champions League | UEFA Champions League |
| UEFA Intertoto Cup | Coppa UEFA Intertoto |
| UEFA Super Cup | Supercoppa Europea di calcio |
| UEFA-cupen | Coppa UEFA |
| Ueken | Ueken |
| Uelen | Uelen |
| Uerkheim | Uerkheim |
| Uetendorf | Uetendorf |
| Uezwil | Uezwil |
| Ufa | Ufa |
| Uffizierna | Galleria degli Uffizi |
| ufo | UFO |
| Uganda | Uganda |
| Ugarit | Ugarit |
| uggla | gufo |
| ugglelik | da gufo |
| Ugglenebulosan | Nebulosa Gufo |
| Ugglor | Strigiformes |
| ugli | mapo |
| Ugly Betty | Ugly Betty |
| Ugly Kid Joe | Ugly Kid Joe |
| Ugly Naked Guy | Friends |
| ugn | forno |
| Ugnen | Fornace |
| ugnseldfast gods | pentole da forno |
| ugnssteka | arrostire |
| ugnsteka | cuocere al forno |
| Ugo Tognazzi | Ugo Tognazzi |
| Ugriska språk | Lingue ugriche |
| Ugyen Wangchuck | Ugyen Wangchuck |
| UHF | Ultra high frequency |
| UHT | Processo UHT |
| Uhura | Uhura |
| Uiguriska | Lingua uigura |
| Uilleann pipe | Uilleann pipes |
| Uintah County | Contea di Uintah |
| UIQ | User Interface Quartz |
| UK | UK |
| UK Subs | UK Subs |
| Ukiyo-e | Ukiyo-e |
| Ukko | Ukko |
| Ukraina | Ucraina |
| Ukrainas flagga | Bandiera ucraina |
| ukrainsk | ucraino |
| ukrainska | ucraino |
| Ukrainska rymdstyrelsen | Agenzia Spaziale Ucraina |
| Ukrainska SSR | RSS Ucraina |
| ukulele | ukulele |
| Ukyo Katayama | Ukyo Katayama |
| Ulaanbaatar | Ulan Bator |
| Ulams spiral | Spirale di Ulam |
| ulan | ulano |
| Ulan-Ude | Ulan-Udė |
| Ulcinj | Dulcigno |
| Ule träsk | Oulujärvi |
| Ule älv | Oulujoki |
| Ulexit | Ulexite |
| Uleåborg | Oulu |
| Uleåborgs järnvägsstation | Oulu |
| Uleåborgs län | Oulu |
| Uleåsalo | Oulunsalo |
| Ulf von Euler | Ulf von Euler |
| Ulfborg-Vembs kommun | Ulfborg-Vemb |
| Uli Hoeneß | Uli Hoeneß |
| Uli Jon Roth | Ulrich Roth |
| Uli Stielike | Uli Stielike |
| Ulisse Aldrovandi | Ulisse Aldrovandi |
| ull | lana |
| ull- | di lana |
| Ulla | Ulrica |
| Ullensakers kommun | Ullensaker |
| Ullensvang kommun | Ullensvang |
| Ullerslevs kommun | Ullerslev |
| Ullevi | Ullevi |
| ullgarn | filo di lana |
