Since 1998, the Casia Corporation Holland have been working on The Definitive TLA Wörterbuch to help people find their way in the ever growing intellectual chaos caused by the late-twentieth century tendency to use as many acronyms in daily communication as possible. Especially acronyms with a length of three letters have been and continue to be immensly popular, not only in Information and Communication Technology circles, but also among people in more mundane fields of labour; a tendency that has mushroomed with the advent of mobile communication and the combined growing popularity of Short Message Services.
At present, there are 7414 TLAs in the database.
Of these, 4445 are distinct, out of 17576 possible (25.29%).
Please click on a bar in the diagram that is displayed below, or enter a search-string.
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| U | ||
| UAA | Universal Administered Address | |
| UAC | User Account Control | |
| UAE | United Arab Emirates | |
| UAP | Unidentified Aerial Phenomena | |
| Unidentified Anomalous Phenomena | ||
| User agent profile | ||
| UAT | User Acceptance Test | |
| UAV | Unmanned Aerial Vehicle | |
| Utrechtse Aardwetenschappen Vereniging | ||
| UBA | Umweltbundesambt | |
| UBD | Universitaire Bestuursdienst | |
| UBE | unsolicited bulk e-mail | |
| UBI | Unexplained Beer Injury | |
| UBO | Ultimate Beneficial Owners | |
| UBT | Utrechts Bureau voor Toerisme | |
| UBU | Universiteitsbibliotheek Utrecht | |
| UCA | U-matic Cassette Application | |
| UCD | University College Dublin | |
| UCE | Unsolicited Commercial Email | |
| UCG | University College Groningen | |
| UCH | University College Hospital | |
| UCI | Union Cycliste Internationale | |
| University of California Irvine | ||
| UCK | Utrechts Centrum voor de Kunsten | |
| UCL | University College London | |
| Upper Control Limit | ||
| UCO | Unie voor Christelijk Onderwijs | |
| UCP | Utrecht City Project | |
| UCR | Usability Change Request | |
| UCS | Union of Concerned Scientists | |
| Universal Charging Solution | ||
| Universal Coded Character Set | ||
| Utrecht Centraal Station | ||
| UDA | Ulster Defence Association | |
| UDB | Utrechts Dakdekkersbedrijf | |
| UDC | Usage Data Collection | |
| UDD | URL Driven Development | |
| User Defined Datatypes | ||
| UDE | Unreal Development Environment | |
| UDF | Ukrainian Defense Forces | |
| UDP | User Datagram Protocol | |
| UDT | Undead Dispatch Team | |
| UEE | UCLA Encyclopedia of Egyptology | |
| UFD | Unknown Fields Division | |
| UFF | Upper Field First | |
| UFO | Unidentifiable Flat Object | |
| Unidentified Flying Obese | ||
| Unidentified Flying Object | ||
| Universitair Functieordenen | ||
| UFP | User of Functional Programming | |
| UFW | Uncomplicated Firewall | |
| United Farm Workers | ||
| UGS | US Geological Survey | |
| UGT | underground nuclear test | |
| UGV | Utrechtse Geologen Vereniging | |
| UHD | Universitair HoofdDocent | |
| UHF | Ultra High Frequency | |
| Ultra Hight Frequency | ||
| UHI | University of the Highlands and Islands | |
| UIB | Universitet i Bergen | |
| UIC | Union Internationale des Chemins de fer | |
| UID | UnIntelligent Design | |
| UIO | Universitet i Olso | |
| UIT | Universitet i Tromsø | |
| Utrechtse Introductie Tijd | ||
| UKK | Uppsala Konsert & Kongress | |
| ULA | United Launch Alliance | |
| ULL | Utrecht-London-lijntje | |
| ULP | UPS Locator Plugin | |
| ULV | Ultra Licht Vliegtuig | |
| Ultra Low Voltage | ||
| UMA | Unlicensed Mobile Access | |
| UMC | Universitair Medisch Centrum (Utrecht) | |
| UME | Unwise Microwave Experiment | |
| UMF | Utrechts Monumentenfonds | |
| UML | Unified Modeling Language | |
| University of Massachusetts Lowell | ||
| UMT | Utrechts Morris Team | |
| UNC | Universal Naming Convention | |
| UNS | Udruženje Novinara Srbije | |
| Universal Name Space | ||
| Universidad Nacional del Sur | ||
| Université Nice Sophia Antipolis | ||
| UOG | University Of Guelph | |
| UOU | University Of Ulster | |
| UPB | Universal Payload Bay | |
| UPC | United Pan-Europe Communications | |
| Universal Product Code | ||
| UPD | Updated program data | |
| UPE | Upper Paleolithic of Europe | |
| UPF | Ultra Processed Food | |
| Uranium Processing Facility | ||
| UPI | Unified Payments Interface | |
| UPN | User Principal Name | |
| User Principal Names | ||
| UPP | Universal Protocol Pointer | |
| UPS | Uninterruptable Power Supply | |
| United Parcel Service | ||
| UQS | unique signal | |
| URC | Unsolicited Result Code | |
| URE | Unrecoverable Read Error | |
| URF | Universal radar format | |
| URI | Uniform Resource Identifier | |
| URK | Utah Robot Kit | |
| URL | Universal Resource Location | |
| URM | Universele Rechten van de Mens | |
| UnReinforced Masonry | ||
| USA | United States Army | |
| United States of America | ||
| USB | Undecided State Bus | |
| Universal Serial Bus | ||
| USC | United States Code | |
| United States Constitution | ||
| Universitair Sport Centrum | ||
| Utrechtsch Studenten Corps | ||
| USD | United States Dollar | |
| Universal Scene Description | ||
| University of San Diego | ||
| USE | Utrecht School of Economics | |
| USF | Utrechtse Studenten Federatie | |
| USG | United States Government | |
| Utrecht School of Governance | ||
| USL | Upper Specification Limit | |
| USM | Unstoppable Sex Machine | |
| Unstoppable SexMachine | ||
| USO | Utrechts Symfonie Orkest | |
| USP | Unique Selling Point | |
| Universidade de São Paulo | ||
| Utrecht Science Park | ||
| USR | Unitas Studiosorum Rheno-Traiectina | |
| United States Robotics | ||
| Universitaire Studentenraad | ||
| Unwilling Sperm Recipient (rape victim) | ||
| Utrechtse Studenten Roeivereniging | ||
| Utrechtse Studenten Ruitervereniging | ||
| USS | United States Ship | |
| USV | Unmanned Seaborne Vessels | |
| Unmanned Surface Vehicles | ||
| UTC | Coordinated Universal Time | |
| University Technical Colleges | ||
| Utrechtse Taxi Centrale | ||
| UTF | UCS Transformation Format | |
| Unicode Transformation Format | ||
| UTM | Unified Threat Management | |
| Urchin Tracking Module | ||
| UTP | Unshielded Twisted Pair | |
| UTR | untranslated region | |
| UUP | Ulster Unionist Party | |
| UUR | Unit Under Review | |
| UUV | Unmanned Underwater Vehicle | |
| UUX | user interface for remote command execution | |
| UVA | Universiteit van Amsterdam | |
| UVM | Unreal Virtual Machine | |
| UVO | Utrechtse Vastgoed Organisatie | |
| UWO | Unexplained Wealth Order | |
| UWV | Uitvoeringsinstituut Werknemersverzekeringen | |
| UZI | Unieke Zorgverlener Identificatie | |
