| U Cluj | U Cluj |
| u mag gerust | you're welcome to |
| U Thant | U Thant |
| U-boot | U-boat |
| U-motor | U engine |
| U-SIM | Universal Subscriber Identity Module |
| U-Tsang | Ü-Tsang |
| U.N.E.S.C.O. | UNESCO |
| U.S.A. | United States |
| Uaboe | Uaboe |
| UAN | UAN |
| Uatu | Uatu |
| UB Conquense | UB Conquense |
| Ubangi | Ubangi River |
| Ubinas | Ubinas |
| Ubisoft | Ubisoft |
| Ubiërs | Ubii |
| Ubon Ratchathani | Ubon Ratchathani |
| UBS | UBS AG |
| Ubstadt-Weiher | Ubstadt-Weiher |
| Ubu Roi | Ubu Roi |
| Ubľa | Ubľa |
| Ucayali | Ucayali River |
| UCB | UCB |
| Uchiha Sasuke | Sasuke Uchiha |
| Uchtdorf | Uchtdorf |
| Uchte | Uchte |
| Uchuu Keiji Gavan | Uchuu Keiji Gavan |
| Uchuu Keiji Shaider | Uchuu Keiji Shaider |
| Uchuu Keiji Sharivan | Uchuu Keiji Sharivan |
| UCI ProTour | UCI ProTour |
| UCI ProTour Ploegentijdrit | Eindhoven Team Time Trial |
| Uckerfelde | Uckerfelde |
| Uckerland | Uckerland |
| Uckermark | Uckermark |
| UClibc | UClibc |
| Ud | Oud |
| UD Almería | UD Almería |
| UD Barbastro | UD Barbastro |
| UD Fuerteventura | UD Fuerteventura |
| UD Lanzarote | UD Lanzarote |
| UD Las Palmas | UD Las Palmas |
| UD Marbella | UD Marbella |
| UD Melilla | UD Melilla |
| UD Mérida | Mérida UD |
| UD Pájara Playas de Jandía | UD Pájara Playas de Jandía |
| UD Salamanca | UD Salamanca |
| UD San Sebastián de los Reyes | UD San Sebastián de los Reyes |
| UD Vecindario | UD Vecindario |
| Udayadityavarman II | Udayadityavarman II |
| UDC | Universal Decimal Classification |
| Uddevalla | Uddevalla Municipality |
| Uddjaure | Uddjaure |
| Udenheim | Udenheim |
| Uder | Uder |
| Udestedt | Udestedt |
| Udine | Udine |
| Udinese Calcio | Udinese Calcio |
| Udligenswil | Udligenswil |
| Udo | Udo |
| Udo Dirkscheinder | Udo Dirkschneider |
| Udon Thani | Udon Thani |
| Udzima wa ya Masiwa | Udzima wa ya Masiwa |
| UE Figueres | UE Figueres |
| UE Lleida | UE Lleida |
| UE Sant Andreu | UE Sant Andreu |
| UE Sant Julià | UE Sant Julià |
| Uebeschi | Uebeschi |
| Uebigau-Wahrenbrück | Uebigau-Wahrenbrück |
| Uecker | Uecker |
| Uecker-Randow | Uecker-Randow |
| Ueckermünde | Ueckermünde |
| Uedem | Uedem |
| UEFA | UEFA |
| UEFA Champions League | UEFA Champions League |
| UEFA Cup | UEFA Cup |
| UEFA Futsal Cup | UEFA Futsal Cup |
| UEFA Intertoto Cup | UEFA Intertoto Cup |
| UEFA Super Cup | UEFA Super Cup |
| UEFA-coëfficiënten | UEFA coefficients |
| UEFA-sterrenstadion | UEFA Stadia List |
| Uehlfeld | Uehlfeld |
| Uehrde | Uehrde |
| Ueken | Ueken |
| Uelen | Uelen |
| Uelitz | Uelitz |
| Uelsen | Uelsen |
| Uelversheim | Uelversheim |
| Uelzen | Uelzen |
| Uerdinger linie | Uerdingen line |
| Uerkheim | Uerkheim |
| Uesslingen-Buch | Uesslingen-Buch |
| Uesugi Kenshin | Uesugi Kenshin |
| Uetendorf | Uetendorf |
| Uetersen | Uetersen |
| Uetikon am See | Uetikon am See |
| Uettingen | Uettingen |
| Uetze | Uetze |
| Uezwil | Uezwil |
| Uffenheim | Uffenheim |
| Uffizi | Uffizi |
| Ufhusen | Ufhusen |
| UFO | UFO |
| UFS | Unix File System |
| UG | UG |
| UG Grindavík | Ungmennafélag Grindavíkur |
| Uganda | Uganda |
| Uganda Revenue Authority SC | Uganda Revenue Authority SC |
| Ugao-Miraballes | Ugao-Miraballes |
| Ugarit | Ugarit |
| UGC | UGC |
| Ugine | Ugine |
| ugli | ugli |
| Ugljan | Ugljan |
| Ugly Betty | Ugly Betty |
| UGT | Unión General de Trabajadores |
| Ugyen Wangchuk | Ugyen Wangchuck |
| Uherské Hradiště | Uherské Hradiště |
| Uherský Brod | Uherský Brod |
| Uhingen | Uhingen |
| Uhlandstraße | Uhlandstraße |
| Uhldingen-Mühlhofen | Uhldingen-Mühlhofen |
