(Main list of acronyms)

__NOTOC__

  • U – (s) Uranium
  • U&E – Urea and electrolytes, see also Basic metabolic panel

UA

  • UA – (s) Ukraine (ISO 3166 digram) (i) Unit of Action
  • UAAP – (i) University Athletic Association of the Philippines
  • UAB
  • (i) Universitat Autònoma de Barcelona (Spanish for "Autonomous University of Barcelona")
  • (i) University of Alabama at Birmingham (cf. UAB Blazers, the university's athletic program)
  • (i) Upravlyayemaya aviatsionnaya bomba (Russian for "Guided aerial bomb")
  • UAE – (i/s) United Arab Emirates (also IOC and FIFA trigram, but not ISO 3166)
  • UAH
  • (s) Ukrainian hryvnia (ISO 4217 currency code)
  • (i) University of Alabama in Huntsville
  • UAR
  • (i) Uniformly At Random (probability)
  • Unión Argentina de Rugby (Spanish for "Argentine Rugby Union")
  • United Arab Republic
  • UAV – (i) Unmanned Aerial Vehicle

UB

  • UBA – Unbundled Bitstream Access
  • UBC
  • (i) United Baptist Church
  • University of British Columbia
  • UBE – (i) Uniform Bar Examination (US)
  • UBI – Universal basic income
  • UBIGEO – (i) Ubicación Geografica (Spanish for Geographical Location)
  • UBS – Union Bank of Switzerland

UC

  • UCAV – (a/i) Unmanned Combat Air Vehicle
  • UCBSA – (i) United Cricket Board of South Africa
  • UCF – (i) University of Central Florida (cf. UCF Knights, this school's athletic program)
  • UCI
  • (i) Union Cycliste Internationale (French, "International Cycling Union")
  • University of California, Irvine
  • UÇK – (i) initialism for two Albanian guerrilla movements
  • UCLA – (i) University of California, Los Angeles (cf. UCLA Bruins, this school's athletic program)
  • UCLES – (i) University of Cambridge Local Examinations Syndicate
  • UCR
  • (i) University of Costa Rica
  • University of California, Riverside
  • UCS – (i) Union of Concerned Scientists
  • UCSB – (i) University of California, Santa Barbara
  • UCSD – (i) University of California, San Diego

UD

  • UDAS – (a) Uppsala-DLR Asteroid Survey
  • UDDI – (a) Universal Description, Discovery and Integration
  • UDP – (i) User Datagram Protocol
  • UDT – (i) Underwater Demolition Team
  • UDTS – (i) Uppsala-DLR Trojan Survey

UE

  • UE – (i) Unit of Employment
  • UEFA – (a) Union of European Football Associations
  • UEFI - (i/a) Unified Extensible Firmware Interface
  • UESAC – (a) Uppsala-ESO Survey of Asteroids and Comets

UF

  • UFC – (i) Ultimate Fighting Championship
  • UFO
  • (i) Unidentified flying object
  • United Farmers of Ontario

UG

  • ug – (s) Uyghur language (ISO 639-1 code)
  • UG – (s) Uganda (ISO 3166 and FIPS 10-4 country code digram)
  • UGA – (s) Uganda (ISO 3166 trigram)
  • UGV – (i) Unmanned Ground Vehicle
  • UGX – (s) ugandan shilling (ISO 4217 currency code)

UH

  • UHF – (i) Ultra High Frequency
  • UHMW – (i) Ultra-high-molecular-weight polyethylene
  • UHRB – (i) Ultra-High Resolution Building (simulation)
  • UHSP – (i) University of Health Sciences and Pharmacy (in St. Louis)
  • UHNWIs - (i) Ultra High Net Worth Individuals Investopedia and Wikipedia

UI

  • UIC – (i) University of Illinois Chicago
  • UID – (i) User ID
  • uig – (s) Uyghur language (ISO 639-2 code)
  • UIL – (i) University Interscholastic League (governing body for most interscholastic activities, notably sports, in Texas public high schools)
  • UIUC – (i) University of Illinois Urbana-Champaign
  • UIW – (i) University of the Incarnate Word

UJ

  • UJTL – (i) Universal Joint Task List
  • UJT – Unijunction transistor

UK

  • uk – (s) Ukrainian language (ISO 639-1 code)
  • UK
  • (i) United Kingdom (also (s) FIPS 10-4 country code)
  • (i) University of Kentucky
  • UKDA – (i) United Kingdom Data Archive [http://www.data-archive.ac.uk]
  • UKIP - (a) UK Independence Party<!--The official name uses the abbreviated "UK".-->
  • ukr – (s) Ukrainian language (ISO 639-2 code)
  • UKR – (s) Ukraine (ISO 3166 trigram)

UL

  • UL – (i) Underwriters Laboratories
  • ULEB – (a) Union des ligues européens de basket-ball, French for "Union of European Basketball Leagues"
  • ULF – (i) Ultra Low Frequency
  • ULOF – unprotected loss of flow (nuclear accident)
  • ULOHS – unprotected loss of heat sink (nuclear accident)
  • UTOP – unprotected transient overpower (nuclear accident)

UM

  • UM – (s) United States Minor Outlying Islands (postal symbol; ISO 3166 digram)
  • UMA – (i) Upper Memory Area
  • UMB – (i) University of Maryland, Baltimore
  • UMBC – (i) University of Maryland, Baltimore County
  • UMC – (i) United Microelectronics Corporation – University of Missouri–Columbia
  • UMD – (i) University of Maryland, College Park
  • UMCP – (i) University of Maryland, College Park
  • UMES – (i) University of Maryland Eastern Shore
  • UMGC – (i) University of Maryland, Global Campus
  • UMI – (s) United States Minor Outlying Islands (ISO 3166 trigram)
  • UMIST – (a) University of Manchester Institute of Science and Technology
  • UMK – (i) Uniwersytet Mikołaja Kopernika (Polish "Nicolaus Copernicus University")
  • UML – (i) Unified Marxist-Leninist Communist Party of Nepal – Unified Modeling Language – University of Massachusetts Lowell – User-Mode Linux
  • UMNO – (a) United Malays National Organisation (Malaysia)
  • UMTS – (i) Universal Mobile Telecommunications System

UN

  • UN – (i) United Nations
  • UNABOM – (p) University and airline bomber (FBI case name)
  • UNAIDS – (i/a) Joint United Nations Programme on HIV/AIDS
  • UNaM – (p/a) Universidad Nacional de Misiones (Spanish, "National University of Misiones")
  • UNAM – (a) Universidad Nacional Autónoma de México (Spanish, "National Autonomous University of Mexico")
  • UNAMSIL – (p) United Nations Mission in Sierra Leone
  • UNCF – (i) United Negro College Fund
  • UNCLOS – (a) United Nations Convention on the Law of the Sea
  • UNCSGN – (i) United Nations Conference on the Standardization of Geographical Names
  • UNCTAD – (p) United Nations Conference on Trade and Development
  • UNDCP – (i) United Nations Drug Control Programme
  • UNDE – (i/a) Union of National Defence Employees (Canada)
  • UNDP – (i) United Nations Development Programme
  • UNEP – (a) United Nations Environment Programme
  • UNESCO – (a) United Nations Educational, Scientific and Cultural Organization
  • UNFCCC – (i) United Nations Framework Convention on Climate Change
  • UNFICYP – (p) United Nations Peacekeeping Force in Cyprus
  • UNGEGN – (i) United Nations Group of Experts on Geographical Names
  • UNHCR – (i) United Nations High Commissioner for Refugees
  • UNICEF – (a) United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
  • UNICRI – (p) United Nations Interregional Crime and Justice Research Institute
  • UNIDO – (a) United Nations Industrial Development Organization
  • UNIFEM – (p) United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
  • UNIS – (p) University of Surrey
  • UNLV – (i) University of Nevada, Las Vegas
  • UNMIK – (p) United Nations Interim Administration Mission in Kosovo
  • UNMOVIC – (p) United Nations Monitoring, Verification and Inspection Commission
  • UNOSOM – (p) United Nations Operations in Somalia
  • UNPROFOR – (p) United Nations Protection Force (in former Yugoslavia)
  • UNRISD – (i) United Nations Research Institute for Social Development
  • UNSM – (i) Union of Nova Scotia Municipalities
  • UNTAC – (a) United Nations Transitional Authority in Cambodia
  • UNTAET – (i/a) United Nations Transitional Administration in East Timor
  • UNU – (i) United Nations University

UP

  • UP
  • (s) Ukraine (FIPS 10-4 country code)
  • Union Pacific Railroad (AAR reporting mark)
  • (i) Upper Peninsula (of Michigan)
  • Uttar Pradesh
  • UPC
  • (i) United Pentecostal Church
  • (i) Universal Product Code
  • UPDA – Uganda People's Democratic Army
  • UPdM – (i) Università Popolare della Multimedialità
  • UPDM – Unified Profile for DoDAF/MODAF
  • Unified Modeling Language Profile for DoDAF and MoDAF
  • Unité de psychiatrie du développement mental
  • Universal Pattern Decomposition Method
  • Unix Power Device Management
  • Unpressurized Docking Mast
  • Urban Planning, Design and Management
  • UPF – (i) Universitat Pompeu Fabra (Catalan, "Pompeu Fabra University")
  • UPI – (i) United Press International
  • UPN – (i) United Paramount Network
  • UPS
  • (i) Uninterruptible Power Supply
  • United Parcel Service
  • UPT – Universal Personal Telecommunications
  • UPTN – Upper Peninsula Telehealth Network
  • UPU – (i) Universal Postal Union

UR

  • ur – (s) Urdu language (ISO 639-1 code)
  • UR – (s) Soviet Union (NATO country code, obsolete 1992)
  • URBSFA – (i) Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
  • URC
  • (i) Uganda Railways Corporation
  • United Rugby Championship
  • Utility regulatory commission
  • urd – (s) Urdu language (ISO 639-2 code)
  • URD – (i) User requirements document
  • URI
  • (i) Uniform Resource Identifier
  • University of Rhode Island
  • URL – (a/i) Uniform Resource Locator ("earl")
  • URU – (s) Uruguay (IOC and FIFA trigram, but not ISO 3166)
  • URY – (s) Uruguay (ISO 3166 trigram)

US

  • US – (i) United States (also (s) ISO 3166 and FIPS 10-4 country code digram)
  • <!-- without template, a bot will replace it -->
  • (i) United States of America (also (s) ISO 3166 trigram)
  • United States Army
  • USAF – (i) United States Air Force
  • USAFSPC – (i) U.S. Air Force Space Command
  • USAACE – (p) United States Army Aviation Center of Excellence, Fort Rucker, Alabama
  • USAADAC – (i) United States Army Air Defense Artillery School, Fort Sill, Oklahoma
  • USAAS – (p) United States Army Armor School, Ft. Benning, Georgia
  • USAIC
  • (i) U.S. Army Infantry Center
  • U.S. Army Intelligence Center
  • USAID – (a/i) United States Agency for International Development
  • USAP
  • (a) Union Sportive des Arlequins Perpignanais
  • (i) United States Antarctic Program
  • USAPATRIOT – (i) Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
  • USAREUR – (p) United States Army Europe
  • USB – (i) Universal Serial Bus
  • USC
  • (i) United States Code
  • University of South Carolina
  • University of Southern California
  • USCG – (i) United States Coast Guard
  • USCINCSPACE – (p) United States Commander in Chief, Space Command
  • USD
  • (s) United States dollar (ISO 4217 currency code)
  • USD(A&S) – (i) Under Secretary of Defense for Acquisition and Sustainment
  • ASD(R&E) Under Secretary of Defense for Research and Engineering
  • USD(C) – (i) (U.S.) Under Secretary of Defense (Comptroller)
  • USDA – (i) United States Department of Agriculture
  • USDI – (i) United States Department of the Interior
  • USDOE – (i) United States Department of Energy
  • USD(I) – Under Secretary of Defense for Intelligence
  • USDPR – (i) (U.S.) Under Secretary of Defense for Personnel and Readiness
  • USDP – (i) (U.S.) Under Secretary of Defense for Policy
  • USDRE – (i) (U.S.) Under Secretary of Defense for Research and Engineering
  • USEC – (a) United States Enrichment Corporation
  • USFL – (i) United States Football League, two different leagues of American football, one operating from 1983–1985 and the second operating in 2022 and 2023
  • USFWS – (i) United States Fish and Wildlife Service
  • USGS – (i) United States Geological Survey
  • USIA – (i) United States Information Agency
  • USJFCOM – (p) United States Joint Forces Command
  • USL
  • (i) United Soccer League (formerly United Soccer Leagues), a governing body for several lower-level leagues in the United States
  • United Soccer League, the former name of a league operated by the above organization that now plays at the second U.S. level as the USL Championship
  • United Soccer League, a completely different soccer league that operated in 1984 and 1985
  • University of Southwestern Louisiana, a former name for the school now known as the University of Louisiana at Lafayette
  • USLC – (i) USL Championship
  • USLS – (i) USL Super League (women's soccer league that started play in 2024)
  • USLW
  • (i) USL W-League, a women's soccer league operated by the United Soccer League organization from 1995 to 2015
  • USL W League, another women's league operated by the same organization that started play in 2022
  • USMC – (i) United States Marine Corps
  • USMLE – (i) United States Medical Licensing Examination
  • USMNT – (i) United States men's national (soccer) team
  • USN – (i) United States Navy
  • USNA – (i) United States National Arboretum – United States Naval Academy
  • USNB – (i) United States Naval Base
  • USNG – (i) United States National Grid
  • USNH – (i) United States Naval Hospital
  • USNI – (i) United States Naval Institute
  • USNO – (i) U.S. Naval Observatory
  • USNOFS – (i) United States Naval Observatory Flagstaff Station
  • USNP – (i) United States Newspaper Program
  • USNR – (i) United States Navy Reserve
  • USNS – (i) United States Naval Ship
  • USNY – (a) University of the State of New York (usually pronounced "use-knee")
  • USNZ – (i) University Sport New Zealand
  • USP – (i) Unique Selling Point
  • USPS – (i) United States Postal Service
  • USPTO – (i) United States Patent and Trademark Office
  • USR
  • (a) Universal System Resources (/usr, directory in a *NIX filesystem)
  • (s) User
  • USS – (i) United States ship (sometimes meaningless, see Star Trek)
  • USSPACECOM – (p) United States Space Command
  • USSR – (i) Union of Soviet Socialist Republics
  • UST – (i) Underground Storage Tank
  • USTRANSCOM – (p) United States Transportation Command
  • USWNT – (i) United States women's national (soccer) team

UT

  • UT – (i) Universal Time
  • UTEP – (a/i) University of Texas at El Paso (pronounced you-tep)
  • UTM – (i) Universal Transverse Mercator (geographical co-ordinate system)
  • UTRGV – (i) University of Texas Rio Grande Valley
  • UTSA – (i) University of Texas at San Antonio

UU

  • UU – (i) Unitarian Universalism – University of Utah – Unseen University
  • UUA – (i) Unitarian Universalist Association
  • UUID – (i) Universally Unique Identifier (see also GUID)
  • UUV – (i) Unmanned Underwater Vehicle

UV

  • UV – (s) Burkina Faso (FIPS 10-4 country code; from Upper Volta) – (p) ultraviolet
  • UVA University of Virginia
  • UVM
  • (i) Universal Verification Methodology
  • (i) Universidad del Valle de México
  • (i) University of Vermont, from its Latin name of Universitas Viridis Montis ("University of the Green Mountains")
  • (i) UV mapping

UW

  • UW – (i) University of Washington
  • UWO – (i) University of Western Ontario
  • UWW – (i) United World Wrestling

UX

  • UXO – (p) Unexploded ordnance

UY

  • UY – (s) Uruguay (ISO 3166 and FIPS 10-4 country code digram)--Up yours
  • UYU – (s) Uruguayan peso uruguayo (ISO 4217 currency code)

UZ

  • uz – (s) Uzbek language (ISO 639-1 code)
  • UZ – (s) Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
  • uzb – (s) Uzbek language (ISO 639-2 code)
  • UZB – (s) Uzbekistan (ISO 3166 trigram)
  • UZS – (s) Uzbek soum (ISO 4217 currency code)