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U
| Acronym | Sense | Language | Topics |
|---|---|---|---|
| UNPR | Uniunea Naţională a Patronatului Român | In Romanian | → Organizations and associations → Labour, labour economics |
| UNPRL | Uniunea Naţională a Practicienilor în Reorganizare şi Lichidare din România | In Romanian | → Organizations and associations → Law, jurisprudence → Romania |
| UNPSA | United Nations Programme on Space Applications | In English | → United Nations → Astronomy → Astronautics |
| UNR | Union pour la Nouvelle République | In French | → Political parties and movements |
| UNRISD | United Nations Research Institute for Social Development | In English | → Research institutes → United Nations → Social sciences → Trade |
| UNRWA | United Nations Relief and Works Agency (for Palestine Refugees in the Near East) | In English | → Migrations → United Nations |
| UNSA | Union Nationale des Syndicats Autonomes | In French | → Labour, labour economics |
| UNSA | Université de Nice-Sophia Antipolis (http://portail.unice.fr) | In French | → Higher education, universities → France |
| UNSA | Unione Nazionale Scrittori e Artisti | In Italian | → Organizations and associations → Language, linguistics, literature |
| UNSC | United Nations Space Command | In English | → Military affairs → United Nations → Astronautics |
| UNSC | United Nations Security Council | In English | → United Nations |
| UNSC | Unité de Nutrition et Signalisation Cellulaire | In French | → Research institutes → Nutrition → Physiology → Biotechnology |
| UNSFA | Union Nationale des Syndicats Français d'Architectes (www.unsfa.com) | In French | → Organizations and associations → Regional planning → France |
| UNSJ | Universidad Nacional de San Juan (www.unsj.edu.ar) | In Spanish | → Higher education, universities → Argentina |
| UNSS | Union Nationale du Sport Scolaire | In French | → Organizations and associations → Sport, physical exercises → Education |
| UNSW | University of New South Wales (www.unsw.edu.au) | In English | → Higher education, universities → Australia |
| UNT | Université Numérique Thématique | In French | → Higher education, universities |
| UNTA | União Nacional dos Trabalhadores Angolanos | In Portuguese | → Organizations and associations → Labour, labour economics |
| UNTEC | Union Nationale des Économistes de la Construction et des Coordonnateurs (www.untec.com) | In French | → Organizations and associations → Economics → Construction |
| UNTSO | United Nations Truce Supervision Organization | In English | → United Nations |
| UNU | United Nations University | In English | → United Nations → Education |
| UOD | Unique Oligo Design | In English | → Software → Biotechnology → Genetics → Enzymes |
| UOF | Unified Office Format | In English | → Document processing |
| UOIF | Union des Organisations Islamiques de France (www.uoif-online.com) | In French | → Organizations and associations → Islam → France |
| UOL | University of London (http://https://london.ac.uk) | In English | → Higher education, universities → United Kingdom |
| UONI | Unité Opérationnelle Nationale Informatique | In French | → Computer science |
| UORI | Unité Opérationnelle de Réalisation Informatique | In French | → Computer science |
| UOS | Unité Opérationnelle Serval | In French | |
| UoSAT | University of Surrey Satellite | In English | → Higher education, universities → Astronautics |
| UOTI | Unité Opérationnelle de Technique Informatique | In French | → Computer science |
| UOW | Ubach-Over-Worms | In Dutch | → Organizations and associations → Sport, physical exercises |
| UP | Universidade do Porto | In Portuguese | → Higher education, universities |
| UP | Unité de Production | In French | |
| UPA | Union du Peuple Alsacien | In French | → Political parties and movements |
| UPA | Union Professionnelle Artisanale | In French | → Organizations and associations |
| UPA | Usability Professionals' Association | In English | → Associations → Human-computer interaction |
| UPB | Université Polytechnique de Bucarest | In French | → Specialized or polytechnical colleges → Engineering, technology → Romania |
| UPB | Universitatea Politehnica (din) Bucureşti | In Romanian | → Specialized or polytechnical colleges → Engineering, technology |
| UPC | Union du Peuple Corse | In French | → Political parties and movements |
| UPC | Universal Products Codes | In English | |
| UPC | Union des Photographes Créateurs (www.upc.fr) | In French | → Organizations and associations → Photography → France |
| UPC | Université Populaire et Citoyenne (www.upc-roubaix.org) | In French | → Organizations and associations → Politics |
| UPC | Union des Populations du Cameroun | In French | → Political parties and movements |
| UPC | Universitat Politècnica de Catalunya (www.upc.es) | In Spanish | → Specialized or polytechnical colleges → Higher education, universities → Spain |
| UPCP | Union du Personnel du Corps de Police | In French | → Labour, labour economics → Police |
| UPCP | Union Pour la Culture Populaire en Poitou-Charentes et Vendée | In French | → Organizations and associations → Civilization, culture, progress |
| UPCP | Unión del Personal Civil de la Provincia | In Spanish | → Organizations and associations → Labour, labour economics → Regional administration |
| UPCP | Union Professionnelle de la Carte Postale (www.upcp.fr) | In French | → Organizations and associations → Graphic industries, printing, publishing → Postal services → France |
| UPCS | Unlicensed Personal Communications Services | In English | → Telecommunications |
| UPE | Universitäre Palliativmedizinische Einrichtung | In German | → Medicine |
| UPF | Union du Peuple Français | In French | → Political parties and movements → France |
| UPF | Union Pour la France | In French | → Political parties and movements → France |
| UPF | Universal Patch Format | In English | → Software |
| UPF | Union des Producteurs de Films (www.upfilms.fr) | In French | → Organizations and associations → Cinema, movies → France |
| UPFC | Uttar Pradesh Financial Corporation (www.upfcindia.com) | In English | → Finance |
| UPFC | United PanAm Financial Corporation (www.upfc.com) | In English | → Finance |
| UPFC | University of Plymouth Football Club | In English | → Organizations and associations → Higher education, universities → Football and rugby |
| UPFC | Utah Partnerships For Christ (www.upfc.org) | In English | → Christianity → United States |
| UPFC | Unified Power Flow Controller | In English | → Applied sciences, technology |
| UPGCAF | Union Professionnelle des Grossistes en Confiserie et Alimentation Fine | In French | → Organizations and associations → Food technology |
| UPGWA | United Plant Guard Workers of America | In English | → Organizations and associations → Labour, labour economics → United States |
| UPI | Unité Pédagogique d'Intégration | In French | → Education |
| UPJV | Université de Picardie Jules Verne (www.u-picardie.fr) | In French | → Higher education, universities → France |
| UPL | Unapproved Parts List | In English | |
| UPLD | Union pour la Démocratie | In French | → Political parties and movements |
| UPLR | Uniform Packaging and Labeling Regulation | In English | |
| UPLR | Uniunea Profesiilor Liberale din România | In Romanian | → Organizations and associations → Romania |
| UPN | Unique Program Number | In English | |
| UPP | User Parameter Processor | In English | → Computer hardware |
| UppAn | Uppsala Astronomical Observatory Annals | In English | → Serial publications, periodicals → Astronomy |
| UppOR | Uppsala Astronomical Observatory Reports | In English | → Serial publications, periodicals → Astronomy |
| UPR | Unité Propre de Recherche | In French | → Research policy |
| UPRES | Unité Propre de Recherche de l'Enseignement Supérieur | In French | → Research policy → Higher education, universities |
| UPS | Uninterruptible Power System | In English | → Electrical engineering |
| UPS | Upright Perigee Stage | In English | → Astronautics |
| UPS | Uninterrupted Power Supply | In English | → Energy economics → Electrical engineering |
| UPS | Uninterruptible Power Supply | In English | → Electrical engineering |
| UPTTS | Utrechtse PTT Sportclub | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands |
| UPU | Union Postale Universelle (www.upu.int) = UPU | Universala Poŝt-Unio | In Esperanto = UPU | Universal Postal Union | In English |
In French | → Organizations and associations → United Nations → Postal services → Standardization |
| UPU | Universala Poŝt-Unio (www.upu.int) = (look above) |
In Esperanto | → Organizations and associations → United Nations → Postal services → Standardization |
| UPU | Universal Postal Union (www.upu.int) = (look above) |
In English | → Organizations and associations → United Nations → Postal services → Standardization |
| UPV | Universitat Politècnica de València (www.upv.es) | In Spanish | → Specialized or polytechnical colleges → Higher education, universities → Spain |
| UPV | Universidad Politécnica de Valencia (www.upv.es) | In Spanish | → Specialized or polytechnical colleges → Higher education, universities → Spain |
| UPV | Universidad del País Vasco | In Spanish | → Higher education, universities |
| UPWT | Unitary Plan Wind Tunnel | In English | → Aerodynamics |
| UQTR | Université du Québec à Trois-Rivières | In French | → Higher education, universities → Canada |
| UR | Unsatisfactory Report | In English | |
| UR | Sveriges Utbildningsradio | In Swedish | → Telecommunications → Education → Sweden |
| UR | University of Rochester (www.rochester.edu) | In English | → Higher education, universities → United States |
| UR | Urgence Relative | In French | → Traumatology |
| UR&C | Usual, Reasonable, and Customary | In English | |
| URA | Urine Receptacle Assembly | In English | → Environmental technology, water supply, waste management |
| URAC | United Radio Amateur Club | In English | → Organizations and associations → Telecommunications |
| URC | Union de la République et du Centre | In French | → Political parties and movements |
| URCAM | Union Régionale des Caisses d'Assurance Maladie | In French | → Organizations and associations → Insurance |
| URCAM | Unions Régionales des Caisses d'Assurance Maladie (www.urcam.fr) | In French | → Organizations and associations → Insurance → Medicine |
| URCF | Union des Révolutionnaires-Communistes de France | In French | → Communist parties → France |
| URCG | Unité de Reconditionnement des Compteurs Gaz | In French | → Energy economics |
| URCSE | Unité de Recherche Conception des Systèmes Électroniques | In French | → Research institutes → Electronics |
| URD | Union Républicaine Démocratique | In French | → Political parties and movements |
| URE | User Range Error | In English | |
| URE | Uranium de Retraitement Enrichi | In French | → Nuclear technology |
| URE | Uranium de Traitement Enrichi | In French | → Nuclear technology |
| URF | Unique Registration Facility | In English | → European Union |
| URGC | Unité de Recherche en Génie Civil | In French | → Civil engineering → Construction |
| URI | Uniform Resource Identifier | In English | → Libraries → Networks, communication |
| URIOPSS | Union Régionale Interfédérale des Oeuvres et Organismes Privés Sanitaires et Sociaux | In French | → Organizations and associations → Medicine → Social welfare |
| URJC | Universidad Rey Juan Carlos (www.urjc.es) | In Spanish | → Higher education, universities → Spain |
| URL | Uniform Resource Locator | In English | → Networks, communication |
| URL | Universidad Ramón Llull (www.url.es) | In Spanish | → Higher education, universities → Spain |
| URMIS | Unité de Recherche Migrations et Sociétés | In French | → Migrations → Sociology |
| URMLA | Union Régionale des Médecins Libéraux d'Alsace | In French | → Organizations and associations → Medicine |
| URN | Uniform Resource Name | In English | |
| ÜRO | Ühinenud Rahvaste Organisatsioon (www.un.org) = UN | Unuigintaj Nacioj | In Esperanto = ONU | Organisation des Nations Unies | In French = ONU | Organizazión d'as Nazions Unitas | In Aragonese = ААН | Арганіза́цыя Аб'ядна́ных На́цый | In Belarusian = VN | Verenigde Nasies | In Afrikaans = ONU | Organización de les Naciones Uníes | In Asturian = OOH | Организацията на обединените нации | In Bulgarian = ABU | Aozadur ar Broadoù Unanet | In Breton = ПНО | Пĕрлешнĕ Нацисен Организацийĕ | In Chuvash = FN | Feriene Naasjes | In Frisian = UN | United Nations | In English = NBE | Nazio Batuen Erakundea | In Basque = ONU | Organización das Nacións Unidas | In Occitan = UN | Unuiĝinta Naciaro | In Esperanto = UN | Ujedinjeni Narodi | In Bosnian = CN | Consociatio Nationum | In Latin = FN | Forenede Nationer | In Danish = UN | Unionita Nacioni | In Ido = ONU | Organizzazione delle Nazioni Unite | In Italian = KU | Kenedhlow Unys | In Cornish = ONU | Organització de les Nacions Unides | In Catalan = ΟΗΕ | Οργανισμός Ηνωμένων Εθνών | In Greek = ΗΕ | Ηνωμένα Έθνη | In Greek = ONU | Organización de las Naciones Unidas | In Spanish = VN | Vereinte Nationen | In German = VN | Verenigde Naties | In Dutch = VN | Vereent Natiounen | In Letzeburgesh = ООН | Организация Oбъединённых Hаций | In Russian = ONU | Organisacion des Nacions unies | In Franco-Provençal = ONZ | Organizacja Narodów Zjednoczonych | In Polish = BMT | Birlashgan Millatlar Tashkiloti | In Uzbek = ООН | Організація Об'єднаних Націй | In Ukrainian = BM | Birleşmiş Milletler | In Turkish = LHiQ | Liên Hiệp Quốc | In Vietnamese = OKB | Organizata e Kombeve të Bashkuara | In Albanian = OSN | Organizácia Spojených národov | In Slovak = OZN | Organizacija Združenih Narodov | In Slovenian = УН | Уједињене нације | In Serbian = FN | Förenta nationerna | In Swedish = UM | Umoja wa Mataifa | In Swahili = NU | Nazzioni Uniti | In Sicilian = ONU | Organizaţia Naţiunilor Unite | In Romanian = ONU | Organização das Nações Unidas | In Portuguese = VN | Vereenten Natschonen | In Low German = ST | Sameindu Tjóðir | In Faroese = HN | Huñusqa Nasyunkuna | In Quechua = PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay = NA | Náisiúin Aontaithe | In Irish = SÞ | Sameinuðu þjóðanna | In Icelandic |
In Estonian | → International relations → United Nations |
| URP | Ufficio Relazioni con il Pubblico | In Italian | |
| URPI | Unité de Recherche Pluridisciplinaire sur l‘Interculturalité | In French | → Research institutes → Civilization, culture, progress |
| URSS | Unaniezh ar Republikoù Sokialour Soviedel = URSS | Union des Républiques Socialistes Soviétiques | In French = USSR | Unie van Sosialistiese Sowjetrepublieke | In Afrikaans = USSR | Union of Soviet Socialist Republics | In English = СССР | Сою́з Сове́тских Социалисти́ческих Респу́блик | In Russian = CCCP | Съюзът на съветските социалистически републики | In Bulgarian = SSSR | Soyuz Sovetskikh Sotsialisticheskikh Respublik | In Russian = URSS | Unión de Republicas Sozialistas Sobieticas | In Aragonese = XRSS | Xunión de les Repúbliques Socialistes Soviétiques | In Asturian = SSRİ | Sovet Sosialist Respublikaları İttifaqı | In Azerbaijani = TSRS | Tarybu Socialistiniu Respubliku Sajunga | In Baltic languages = SSSR | Savez Sovjetskih Socijalističkih Republika | In Serbo-Croatian = URSS | Unió de Repúbliques Socialistes Soviètiques | In Catalan = SSSR | Svaz sovětských socialistických republik | In Czech = USSR | Unio de Sovetaj Socialismaj Respublikoj | In Esperanto = CCCP | Социаллă Совет Республикисен Союзĕ | In Chuvash = USSR | Unionen af Socialistiske Sovjetrepublikker | In Danish = URSS | Unione delle Repubbliche Socialiste Sovietiche | In Italian = ZSRR | Związek Socjalistycznych Republik Radzieckich | In Polish = SSKS | Szovjet Szocialista Köztársaságok Szövetsége | In Hungarian = UdSSR | Union der Sozialistischen Sowjetrepubliken | In German = ΕΣΣΔ | Ένωση Σοβιετικών Σοσιαλιστικών Δημοκρατιών | In Greek = URSS | Unión de Repúblicas Socialistas Soviéticas | In Spanish = NSVL | Nõukogude Sotsialistlike Vabariikide Liit | In Estonian = SESB | Sobietar Errepublika Sozialisten Batasuna | In Basque = USSR | Uny fan Sosjalistyske Sowjetrepublyken | In Frisian = ԽՍՀՄ | Խորհրդային Սոցիալիստական Հանրապետությունների Միություն | In Armenian = URSS | Unión das Repúblicas Socialistas Soviéticas | In Galician = სსრკ | საბჭოთა სოციალისტური რესპუბლიკების კავშირი | In Georgian = URSS | Unio Rerum Publicarum Socialisticarum Sovieticarum | In Latin = CCPC | Советтик Социалисттик Республикалар Союзу | In Kirghiz = UdSSR | Unioun vun de Sozialistesche Sowjetrepubliken | In Letzeburgesh = PSRS | Padomju Sociālistisko Republiku Savienība | In Latvian = СССР | Сојуз на Советските Социјалистички Републики | In Macedonian = УРСС | Униуня Републичилор советиче Сочиалисте | In Moldavan = KRSS | Kesatuan Republik Sosialis Soviet | In Malay = USSR | Unie van Socialistische Sovjetrepublieken | In Dutch = SSSR | Sambandet av Sosialistiske Sovjet-Republikkar | In Nynorsk = SSSR | Samveldet av sovjetiske sosialistrepublikker | In Norwegian = URSS | Unnion d'Républyiques Socialistes Soviétiques | In Norman = URSS | União das Repúblicas Socialistas Soviéticas | In Portuguese = URSS | Union de las Republicas Socialistas Sovieticas | In Occitan = SSRH | Susyalista Suwit Republikakunap Huñun | In Quechua = ССРЦ | Советон Социалистон Республикæты Цæдис | In Ossetian = URSS | Uniunea Republicilor Sovietice Socialiste | In Romanian = URSS | Unioni dî ripùbblichi sucialisti suviètichi | In Sicilian = ZSSR | Zveza sovjetskih socialističnih republik | In Slovenian = СССР | Савез Совјетских Социјалистичких Република | In Serbian = SSCB | Sovyet Sosyalist Cumhuriyetler Birliği | In Turkish = СРСР | Союз Радянських Соціалістичних Республік | In Ukrainian = SSRB | Sovet Sosialistik Republiklar Berlege | In Tatar = SSRI | Sovet Sotsialistik Respublikalar Ittifoqi | In Uzbek |
In Breton | → International relations → Geography |
| URSS | Union des Républiques Socialistes Soviétiques = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In French | → International relations → Geography |
| URSS | Unión de Republicas Sozialistas Sobieticas = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Aragonese | → International relations → Geography |
| URSS | Unió de Repúbliques Socialistes Soviètiques = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Catalan | → International relations → Geography |
| URSS | Unione delle Repubbliche Socialiste Sovietiche = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Italian | → International relations → Geography |
| URSS | Unión de Repúblicas Socialistas Soviéticas = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Spanish | → International relations → Geography |
| URSS | Unión das Repúblicas Socialistas Soviéticas = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Galician | → International relations → Geography |
| URSS | Unio Rerum Publicarum Socialisticarum Sovieticarum = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Latin | → International relations → Geography |
| URSS | Unnion d'Républyiques Socialistes Soviétiques = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Norman | → International relations → Geography |
| URSS | União das Repúblicas Socialistas Soviéticas = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Portuguese | → International relations → Geography |
| URSS | Union de las Republicas Socialistas Sovieticas = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Occitan | → International relations → Geography |
| URSS | Uniunea Republicilor Sovietice Socialiste = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Romanian | → International relations → Geography |
| URSS | Unioni dî ripùbblichi sucialisti suviètichi = USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRB, SSRI (look above) |
In Sicilian | → International relations → Geography |
| URSSAF | Union pour le Recouvrement des cotisations de la Sécurité Sociale et des Allocations Familiales | In French | → Organizations and associations → Insurance |
| URT | Uranium de Retraitement | In French | → Nuclear technology |
| URT | Uranium de Traitement | In French | → Nuclear technology |
| URV | Universitat Rovira i Virgili | In Catalan | → Higher education, universities → Spain |
| US | User Segment | In English | |
| USA | United States of America = FS | Feriene Steaten | In Frisian = США | Соединённые Штаты Америки | In Russian = ABD | Amerika Birleşik Devletleri | In Turkish |
In English | → Geography → United States |
| USA | United Space Alliance (www.unitedspacealliance.com) | In English | → Astronautics |
| USA | United States Army | In English | → Military affairs → United States |
| USA | Unidades de Socorro Avançado | In Portuguese | → Traumatology |
| USA/RC | Universities Space Automation/Robotics Consortium | In English | → Electrical engineering |
| USA2D/3D | Unified Solutions Algorithm 2-Dimensional/3-Dimensional | In English | → Computer-based techniques → Algorithms |
| USACIDC | United States Army Criminal Investigation Command | In English | → Criminology → Military affairs → United States |
| USADSF | United States of America Deaf Sports Federation | In English | → Organizations and associations → Sport, physical exercises → United States |
| USAF | United States Air Force | In English | → 358 → United States |
| USAHA | United States Animal Health Association (www.usaha.org) | In English | → Associations → Veterinary medicine → United States |
| USAID | United States Agency for International Development (www.usaid.gov) | In English | → Central administration → Development → United States |
| USAISC | United States Army Information Systems Command | In English | → Knowledge management → Military affairs → United States |
| USAISEC | United States Army Information Systems Engineering Command | In English | → Knowledge management → Military affairs → United States |
| USAISMA | United States Army Information Systems Management Activity | In English | → Knowledge management → Military affairs → United States |
| USAISSSC | United States Army Information Systems Software Support Command | In English | → Knowledge management → Military affairs → United States |
| USAM | Ufficio Generale Spazio Aereo e Meteorologia | In Italian | → Meteorology, climatology → Aeronautics, aircraft |
| USAMCC | United States Army Meteorology and Calibration Center | In English | → Meteorology, climatology → Military affairs → United States |
| USAMMDA | United States Army Medical Materiel Development Activity | In English | → Medicine → Military affairs → United States |
| USAMRIID | United States Army Medical Research Institute of Infectious Diseases | In English | → Research institutes → Infectious diseases → Military affairs → United States |
| USAP | Union des Société d'Autoroutes à Péage | In French | → Organizations and associations → Transport and postal services |
| USAR | United States Army Reserve | In English | → Military affairs → United States |
| USARC | United States Army Reserve Center | In English | → Military affairs → United States |
| USARJ | United States Army Japan | In English | → Military affairs → United States |
| USARPAC | United States Army Pacific | In English | → Military affairs → United States |
| USARSO | United States Army South | In English | → Military affairs → United States |
| USART | Universal Synchronous & Asynchronous Receiver Transmitter | In English | → Telecommunications |
| USASATCOMA | United States Army Satellite and Communication Agency | In English | → Military affairs → Astronautics → Telecommunications → United States |
| USASDC | United States Army Strategic Defense Command | In English | → Military affairs → United States |
| USASDG | United States Army Space Defense Group | In English | → Military affairs → Military engineering → Astronautics → United States |
| USATC | United States Army Training Center | In English | → Education → Military affairs → United States |
| USB | Universal Serial Bus | In English | → Computer hardware → Peripheral devices |
| USB | Unified SBand | In English | → Telecommunications |
| USB | Union Sportive de Biarritz | In French | → Organizations and associations → Sport, physical exercises |
| USB | Unidades de Socorro Básico | In Portuguese | → Traumatology |
| USBE | Unified SBand Equipment | In English | → Telecommunications |
| USBI | United Space Booster, Incorporated | In English | → Astronautics |
| USBS | Unified SBand System | In English | → Telecommunications |
| USC | Unitas Saturnus Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises |
| USCA | University of South California (https://www.usc.edu) | In English | → Higher education, universities → United States |
| USCD | Union Sportive des Cheminots Dijonnais | In French | → Organizations and associations → Sport, physical exercises → Transport and postal services |
| USCF | Union Sportive des Cheminots de France | In French | → Organizations and associations → Sport, physical exercises → Transport and postal services → France |
| USCG | United States Coast Guard | In English | → Police → United States |
| USCIS | United States Citizenship and Immigration Services | In English | → Central administration → Migrations → United States |
| USCMH | United States Commission on Military History | In English | → Organizations and associations → History → Military affairs → United States |
| USD | Union Sociale Démocratique | In French | → Political parties and movements |
| USDA | United States Department of Agriculture (https://www.usda.gov/) | In English | → Central administration → Agricultural sciences → United States |
| USE | Universala Slipa Enciklopedio | In Esperanto | → General encyclopaedias |
| USE | Unique Support Equipment | In English | |
| USE | Unobtrusive Sensors and Effectors | In English | |
| USE | User Support Environment | In English | |
| USE | Union pour la Solidarité et l'Entraide | In French | → Organizations and associations |
| USEAC | United States Educational Advising Center | In English | → Education → United States |
| USEIT | User Station Evaluation Integration and Test | In English | |
| USEJ | Usona Esperantista Junularo (http://usej.org) | In Esperanto | → Organizations and associations → Artificial languages (linguistics) → United States |
| USF | Union Suisse des Fiduciaires = STV | Schweizerischer Treuhänder-Verband | In German |
In French | → Organizations and associations → Law, jurisprudence → Finance → Switzerland |
| USFF | United States Flag Foundation | In English | → Foundations → Flags, banners → United States |
| USFQ | Universidad San Francisco de Quito | In Spanish | → Higher education, universities |
| USFWS | United States Fish and Wildlife Service (www.fws.gov) | In English | → Central administration → Fishing, hunting → United States |
| USGERES | Union de Syndicats et Groupements d'Employeurs Représentatifs dans l'Économie Sociale | In French | → Organizations and associations → Labour, labour economics |
| USHMM | United States Holocaust Memorial Museum (www.ushmm.org) | In English | → Museums → History → United States |
| USHSLA | United States Hide, Skin & Leather Association (www.ushsla.org) | In English | → Associations → Leather industry → United States |
| USI | Update Software Identity | In English | → Software |
| USI | User System Interface | In English | → Human-computer interaction |
| USIM | Universal Subscriber Identity Module | In English | → Telecommunications |
| USIP | United States Institute for Peace (www.usip.org) | In English | → Organizations and associations → Polemology → United States |
| USIRF | Union des Syndicats de l'Industrie Routière Française (www.usirf.com) | In French | → Organizations and associations → Civil engineering → France |