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 7521 TLAs in the database. Of these, 4492 are distinct, out of 17576 possible (25.56%).

Please click on a bar in the diagram that is displayed below, or enter a search-string.

A
AAA		Agricultural Adjustments Administration
		Allianza Anticommunista Argentina
		Anti-Aircraft Artilery
		Australian Army Aviation
AAB		Alliance Agricole Belge
AAC		Advanced Audio Coding
		Aluminium Anodizers Council
		Augmentative and Alternative Communication
AAD		after-ALD-dip
		Analog/Analog/Digital (master/mix/record)
AAE		Alpha Amylase Enzyme
		American Association of Endodontists
		Australasian Antarctic Expedition
AAF		Allied Air Forces
		American Air Forces
AAG		Actieteam Aardbevingen Garrelsweer
		Advanced Arresting Gear
		Artsen Alternatieve Geneeswijze
AAH		Association for Art History
AAI		Aircraft Accident Investigation
		American Association of Immunologists
AAJ		American Association of Jurists
AAK		Allgemeines AufäumKommando
AAL		Aid Association for Lutherans
		Americans Against Librarians
AAM		Air to Air Missile
AAN		Association of Alternative Newsweeklies
AAO		Anglo Australian Observatory
AAP		Assisterend Academisch Personeel
		Australian Associated Press
AAQ		Association des Anesthésiologistes du Québec
AAR		Amino Acid Racemization
		Application of Air Regulation
		Association of American Railroads
AAS		Acta Apostolicae Sedis
		American Astronomical Society
AAT		Administration de l'Assistence Technique
AAU		Alpha Acid Unit
		Association of American Universities
AAV		Algemene Administratieve Voorschriften
AAW		Air Attack Warning
		Algemene ArbeidsongeschiktheidsWet
		Asociale Achterlijke Wappie
AAX		Amino Acid miX
AAY		Asociación de Ajedrecistas del Estado de Yucatán
AAZ		Ausbildungs- und Analyse-Zentrum
ABA		Aanjaagteam Bescherming Arbeidsmigranten
		American Bar Association
		Australian Broadcasting Authority
ABB		Amsterdamse BierBak
		ArcheoBiblioBase
		Asea Brown Boveri
ABC		Alcoholic Beverage Control
		All British Cycle
		American Book Centre
		Anchor Brewing Company
		Atheist Bus Campaign
		Australian Broadcasting Corporation
ABD		After Beer Dip
		Association Belge de Documentation
ABE		Alternative Best-Effort
ABF		Amyloid Beta Fibers
		Asia Business Forum
ABG		Alpha Beta Gamma
ABH		Actual Bodily Harm
		ASSOCIAÇÃO BRASIL HUNTINGTON
ABI		American Bankruptcy Institute
ABJ		Arbeitsgemeinschaft Bayerischer Junglehrer
ABK		Autodeterminazioaren BiltzarraK
ABL		Academia Brasileira de Letras
ABM		Anti ballistic Missile
ABN		Algemeen Beschaafd Nederlands
		Algemene Bank Nederland
ABO		Alle Biertjes Open
		Arbitrary Bucket Order
		Association of British Orchestras
		Autonoom Beeldende Ontwikkeling
ABP		AdBlock Plus
		Algemeen Burgerlijk Pensioenfonds
		American Board of Pediatrics
		American Border Patrol
ABQ		Art Buisness Exchange
		Associacao Brasileira de Quimica
ABR		Accredited Buyer Representative
ABS		Absoluut
		Acrylonitrile Butadiene Styrene
		American Bureau of Shipping
		Anti-Blokkeer Systeem
ABT		American Ballet Theater
ABU		Asiapacific Broadcasting Union
ABV		Alcohol by Volume
ABW		Alcohol By Weight
		Algemeen Beschaafd Waps
		Automatisierung + Bildverarbeitung Dr. Wolf
ABY		Alliance of Baptist Youth
ABZ		Algemeen Bestuurlijke Zaken
ACA		Australian Communications Authority
ACB		AMERICAN COUNCIL OF THE BLIND
ACC		Adaptve Cruise Control
		Administrative Committee on Coordination
		Amazon Currency Converter
		Amsterdamse Cricket Club
		Anthropogenic Climate Change
ACD		Atmospheric Chemistry Division
		Australian Committee of Dentists
ACE		Accellerated Christian Education
		Additional Core Enhancement
		Advanced Composition Explorer
		Agile Combat Employment
		angiotensin converting enzyme
		angiotensin-converting enzym
		Assured Computing Environment
ACF		Academic Competition Federation
ACG		Aesthetics and Computation Group
		Agile Contracteren and Governanve
		Association for Corporate Growth
ACH		Automated Clearing House
ACI		Accusativus Cum Infinitivo
		Automobile Club d'Italia
ACJ		American Committee on Jerusalem
ACK		Arbeitsgemeinschaft Christlicher Kirchen
		Awesome Kennisclip
ACL		Access Control List
		Association of Christian Librarians
ACM		Association for Computing Machinery
		Autoriteit Consument en Markt
ACN		Adventist Communication Network
ACO		Australian Chamber Orchestra
ACP		Adaptive Configuration Pattern
		Airspace Change Proposal
		Algemeen Christelijke Politiebond
		American Center for Physics
ACQ		Association de la Construction du Québec
ACR		Air Crew Regulation
		American College of Radiology
ACS		Actie Comité Schepping
		Adobe Creative Suite
		American Chemical Society
		Australian Computer Society
ACT		Aandachtgerichte Cognitieve Therapie
		Acceptance and Commitment Therapy
		Access to Covid Tools
		American Conservatory Theater
		Americans Coming Together
ACU		Aktiecentrum Utrecht
		Amateur Class United
		Arithmetic & Control Unit
		Australian Catholic University
ACV		Arctic Code Vault
		Armored Combat Vehicle
		Asynchronous Copy and Verify
ACW		Asia Computer Weekly
ACX		alpha-cyclodextrin (cyclohexa-amylose)
ACY		Advocates for Children and Youth
ACZ		Aero-Club Zwickau
ADA		Air Defence Artillery
		Airborne Data Automation
		American Dairy Association
		American Dental Association
		American Dietetic Association
ADB		Apple Desktop Bus
ADC		Adward Drinker Cope
		Air Data Computer
		America's Dumbest Criminals
		Analog to Digital Converter
		Attack Drone Company
ADD		After Dinner Dip
		Altijd Dezelfde Discussie
		Asshole Driven development
		Attention Deficit Disorder
ADE		Amsterdam Dance Event
		Antibody Dependent Enhancement
ADF		Amiga disk file
		Automatic Direction Finder
ADG		Air Defense Group
ADH		Advanced Development Hardware
		alcoholhydrogenase
ADI		Air Defense Intercept
ADJ		Australian Dental Journal
ADK		Application Definable Keys
ADL		Activities of Daily Living
		Ada Lovelace Day
		adaptor description library
		Anti-Defamation Legue
ADM		After Dark MultiModule
		Atomic Demolition Munition
ADN		Automatic Digital Network
ADO		ActiveX Data Object
		Alles Door Oefening
ADP		Acquisition Data Processor
		Alles Doet Pijn
		Ammonium Dihydrogen Phosphate
		Attach Detection Protocol
		Automatic Device Provisioning
ADR		Actief Donor Registratiesysteem
		Aeroporto Di Roma
		Architecture Decision Record
		Automated Diagog Replacement
ADS		Advanced Degaussing System
ADT		Abnormal Data Type
		Advanced Digital Technology
		American Dental Trading
ADU		Accumulation & Distribution Unit
ADV		arbeidsduurverkorting
ADW		Air Defense Warning
ADX		Accumulation/Distribution Index
ADZ		Air Defense Zone
AEA		Atomic Energy Act
AEB		Afval Energie Bedrijf
AEC		Asociación Española de Cricket
		Atomic Energy Commission
AEE		Acronym Eieren Eten
AEG		Allgemeine Elektrizitäts Gesellschaft
AEI		Airfield Elevation Information
		American Enterprise Institute
AEO		Authorized Economic Operator
AES		Advanced Encryption Standard
AEX		Amsterdam Exchange Index
AFA		Air Force Academy
		Anti-Facistische Actie
		Automatic Fire Alarm
AFB		Air Force Base
		Ashfall Fossil Beds
AFC		Algemeen Fysisch Colloquium
AFD		Assistant Flight Director
AFH		Adaptive Frequency Hopping
AFI		A Fire Inside
AFK		Away From Keyboard
AFL		Assessment For Learning
		Australian Football League
AFM		Automatic Functionpoint Measurement
		Autoriteit Financiële Markten
AFO		Authorised Firearms Officer
AFP		Above Fifty Percent
AFR		Anders Fogh Rasmussen
AFS		Air Fuel Synthesis
		Apple Financial Services
AFT		Adobe Flex Technology
AFU		Artificial Feel Unit
AGA		AB Gas-Accumulator
		Advanced Graphics Architecture
		all grid array
		American Gas Association
AGB		Alexander Graham Bell
AGC		Apollo Guidance Computer
		Apollo Guidance Computers
AGH		America's Godly Heritage
AGI		Artificial General Intelligence
AGK		Aircraft General Knowledge
AGM		Absorbed Glass Mat
		Annual General Meeting
AGN		Active Galactic Nuclei
		Active Galactic Nucleus
AGP		Accelerated Graphics Port
AGR		After Gear Room
		Amstel Gold Race
AGS		Adobe Genuine Service
		Auto Gaat Sneller
AGV		Automated Guided Vehicle
AGW		Anaal Genomen Worden
		Anthropogenic Global Warming
AHA		Alert Holding Area
		Alpha Hydroxy Acid
		American Heart Association
		American Homeowners Association (stakkers)
AHC		Aller Heiligen Convent
AHE		Austro-Hungarian Empire
AHF		Acute Hissy Fit
AHM		Atom Heart Mother
AHR		Atari Hamster Riot
AIB		Alles Is Bagger
AIC		Aeronautical Information Circulation
		animal-industrial complex
AID		Alles is duur
AIF		Audio Interchange File
AIG		American International Group
		Answers In Genesis
AIK		Astronomia i Kosmos
		Academie In Kernwoorden (TM)
		Aircraft Installation Kit
		Akedemie für Informations- und Kommunikations design
		All Insect Killer
		Alle Internationale Komplotten
		Alles Is Koffie
		Alles Is Kut
		Allmänna Idrottsklubben
		American Indoor Karting
		Antiimperialistische Koordination
		APO Immobilien-Kapitalanlagegesellschaft
		Apple is kut
		Associated Industries of Kentucky
		Associazione Italiana Killifish
		Automated Installation Kit
AIM		American Indian Movement
		AOL Instant Messenger
		Auto Import Maatschappij
AIO		Assistent In Opleiding
AIP		Aeronautical Information Publication
		Alaskan Independence Party
		Auteursrecht InformatiePunt
		Auteursrechten Informatie Punt
AIR		Annals of Improbable Research
AIS		Aeronautical Information Service
		All Inn Squash
		Alles Is Saai
		Australian Institute of Sport
		Automatic Identification System
AIT		Alles Is Traag
AIV		Adviesraad Internationale Vraagstukken
AIW		AIK is woke
		Alles Is Wut
AJC		Annie Jump Canon
		Atlanta Journal-Constitution
AJD		Aantrekkelijk Jong Ding
AJT		Austerity Jizm Tsunami
AKA		Also Known As
AKI		Automatische Knipperlichtinstallatie
AKK		Alles Klinkt Kut
AKO		Algemene Kiosk Onderneming
		Amsterdamsche Kiosk Onderneming
AKR		Auroral Kilometric Radiation
ALD		After Lunch Dip
ALE		Asynchronous Lint Engine
ALF		Alien Life Form
		Animal Liberation Front
ALL		Acute lymphoblastic leukemia
		Algemeen Letterkundig Lexicon
ALM		Application Lifecycle Management
ALS		Amyotrofische Lateraal Sclerose
ALT		Anthonie van Leeuwenhoek Terrein
		Applied Laser Technology
ALU		Arithmetic Logic Unit
ALV		Algemene LedenVergadering
AMA		American Medical Association
AMC		Academisch Medisch Centrum
		Acceptable Means of Compliance
		Arizona Meteor Crater
		Aviation Medical Center
AMD		Advanced Micro Devices
		Alles Moet Dood
AMF		Arbeit Macht Frei
AMG		Annales de Musee Guimet
		Aufrecht Melcher Großaspach
AMH		Alaska Marine Highway
		Anti-Müller-Hormoon
AMI		Amazon Machine Image
AMK		Afspraak Met Kapper
AML		Accomplished Marathon Lounger
AMO		Algemene Militaire Opleiding
AMP		Accelerated Mobile Pages
		Anger Management Problem
AMR		Ancient Mystery Religion
AMS		Ablepharon-Macrostomia Syndrome
		Aboriginal Media Services
		Academic Management Services
		Academic Management System
		Academic Monitoring System
		Agricultural Marketing Service
		All Meat Syndrome
		Apron Management Services
AMT		Automated Manual Transmission
ANA		Administration for Native Americans
		After Nappy Accident
ANC		Active Noise Cancellation
		African National Congres
		Amsterdam Network Collective
		Arlington National Cemetery
AND		Active Network Diagram
		Active Nutation Damping
		Advanced Network Design
		Aircraft Nose Down
		Allow Natural Death
		Alpha Numeric Display
		Asiatic Newcastle Disease
		Automatic Network Dialing
		Average Nipple Diameter
ANH		A New Hope
		Agencia Nacional de Hidrocarburos
		Alliance for Natural Health
ANI		Artificial Narrow Intelligence
ANL		Argonne National Laboratory
		Assemblée Nationale Législative
ANM		Autodromo Nazionale di Monza
ANN		Artificial Neural Network
ANP		Aircraft Nuclear Propulsion
		Algemeen Nederlands Persbureau
ANS		Actiefront Nationale Socialisten
		Algemene Nederlandse Spraakkunst
		Astronomische Nederlandse Satelliet
ANT		Actor Network Theory
AOA		Agreement On Agriculture
		Angle Of Attack
AOB		Alcohol On Board
		Association of Brewers
AOC		Active Optical Cable
		Agents Of Chaos
		Alexandria Ocasio Cortez
		Appellation d\'Origine Contrôlée
AOD		Access Occlusion Device
AOF		Algemien Onbeschoft Frysk
AOI		Analog Optical Isolator
AOL		America On-Line
		Army Of Lovers
AON		Active Optical Network
		Art Of Noise
AOP		Abonnee-Overnamepunt
		Aspect-Oriented Programming
AOQ		Acción Ortográfica Quito
AOS		Acquisition Of Signal
AOT		Autobus Onderneming Texel
AOV		Arbitrary Output Variable
AOW		Algemene Ouderdomswet
APA		American Philosophical Association
		American Psychological Association
APB		Algemene Politiek Beschouwingen
		Algemene Politieke Beschouwingen
		Analog Processing Box
APC		Armoured Personnel Carrier
		Armoured Personnel Coffin
		Asynchronous Procedure Calls
		Automatic Pitch Control
APD		Attention Point Document.
API		Advance Passenger Information
		American Political Ideology
		Application Program Interface
APK		Algemene Periodieke Keuring
APL		AIK Public Licence
		American Protective League
		Applied Physical Letters
		Applied Physics Laboratory
APO		Acting Pilot Officer
		Acute Pulmonary Oedema
		Advanced Planner and Optimizer
		African Political Organization
		Apache Point Observatory
		Armenian Philharmonic Orchestra
		Army Post Office
		Association for Professional Observers
		Audio Processing Object
		Außerparlamentarische Opposition
		Authorized Personnel Only
APP		amyloïdprecursorproteïne
		Apple Proprietary Protocol
APR		Annual Percentage Rate
		Apache Portable Runtime
APS		Advanced patching systems
		American Physical Society
		Automated Photons and Sorcery
APT		Advanced Persistent Threat
		Application Portfolio Transparency
APV		Algemene Plaatselijke Verordening
AQI		Al-Qaeda in Iraq
ARB		Architecture Review Board
ARC		Adaptive Replacement Cache
		Advanced Research Computing
		Automatic Reference Counting
ARD		Arbeitsgemeinschaft der öffentlich-rechtlichen Rundfunkanstalten der Bundesrepublik Deutschland
ARE		American Rare Earths
		Assistant Resident Engineer
ARF		Amplification Risk Factor
		Automatic Response file
ARG		Argh (als in arghl als je verpletterd wordt of zo; ook \'Kasteel van ~\')
ARK		Ardipithecus Ramidus Kadabba
ARL		Applied Reinforcement Learning
ARM		Acorn RISC Machine
		Acorn Risc Machines
		Application Response Measurement
		Asteroid Redirect Mission
ARO		Aliens Registration Office
ARP		Address Resolution Protocol
		Alan Richard Pearlman
		Anti Revolutionaire Partij
ARS		Account Registration System
ART		Advanced Render Technology
ARV		Armed Response Vehicle
ARW		Alfred Russel Wallace
ASA		Advertising Standards Authority
		American Standards Association
		Atom Splitter Audio
ASB		Aluminium Service Breukelen
		American Salivating Boytalk
		Anti-Social Behaviour
		Arundel Special Bitter
ASC		Administratief Service Centrum
		Alabama Supreme Court
		Amsterdamsch Studenten Corps
		Autism Spectrum Condition
ASD		Amazing SlowDowner
		Amazingly Slow Designer
		Animal Science Department
		Autism Spectrum Disorder
ASF		Advanced Streaming Format
		All Species Foundation
		Apache Software Foundation
		Audio Spectral Frontend
ASI		Approach Slope Indicator
		Artificial Superintelligence
ASL		American Sign Language
ASM		Architect Steppa Mix
		Assistant Stage Manager
ASN		Algemene Spaarbank Nederland
		Amyotrofische Schouder Neuralgie
ASO		Amaury Sport Organisation
ASP		Active Server Page
		Application Service Provider
		Association of Stage Pyrotechnicians
ASQ		Autism Spectrum Quotient
ASR		Accuracy Super Resolution
		AMEV/Stad Rotterdam
		Anti-Slip Regeling
ASS		Actually Smart Summon
		All Stood Still
AST		Adaptive Staggered Tilted
		AIK Standard Time
		Alibaba Security Team
		Application Security Testing
ASU		Adressspeicherumschaltung
ASV		Algemene Senaten Vergadering
ASW		Algemene Sociale Wetenschappen
ATA		Advanced Technology Attachment
		Analog Telephone Adapter
		Anti Theist Allegiance
ATB		All Terrain Bike
		Amsterdam Trade Bank
		Automatische Treinbeïnvloeding
ATC		Air Traffic Control
		Australian Texel Corporation
ATD		After Tea Dip
		Amused To Death
ATF		Advanced Tactical Fighter
		Alcohol Tobacco Fire arms
		Amateur Theaterfestival
ATG		ArcTanGent
		Art Technology Group
ATH		All Time High
ATM		Adobe Type Manager
		At The Moment
		Automatic Teller Machine
ATO		Approved Training Organisation
ATP		Adenosine TriPhosphate
		Administratief en Technisch Personeel
		Advanced Total Presets
		Advanced Travel Partner
		Aircraft Technical Publishers
		Alaska Teacher Placement
		Association of Tennis Professionals
		Association of Test Publishers
		Australian Tax Practice
		Australian Technology Park
		Availability To Promise
ATR		Advanced Tongue Root
ATS		Air Traffic Services
ATT		Automatic Tampon Trigger
ATU		Audio Terror Unit
ATV		ArbeidsTijdVerkorting
ATW		All The Way
		Atari Transputer Workstation
ATZ		Aerodrome Traffic Zone
AUB		Als 't U Belieft
		Amsterdams Uit Bureau
		Amsterdams Uitgaan Bedrijf
AUC		Area Under the Curve
AUI		Attachment Unit Interface
AUP		Acceptable Use Policy
AUW		All Up Weight
AVD		Android Virtual Device
AVG		Algemene Verordening Gegevensbescherming
		Anti-Virus Guard
AVI		Audio Video Interleaved
AVM		Advanced Voice Mode
AVN		Adult Video News
		Association Vinçotte Nucléaire
AVP		Academie Voor Popcultuur
		Amstelveens Video Paleis
		Amsterdam Video Post
AVR		Audio Visual Research
AVS		Algemene Vereniging Schoolleiders
		Application Visualization System
AVT		Alles Valt Tegen
AWA		Arctic World Archive
AWB		Afrikaner Weerstandsbeweging
		Auto White Balance
		AutoWikiBrowser
		Average White Band
AWE		Adress Windowing Extension
		Advanced Weapons Elevators
AWF		Anti-Wokistisch Front
AWG		Animal Welfare Guidelines
		Anthropocene Working Group
AWI		Animal Welfare Institute
AWK		Aho, Weinberger, Kernighan
AWM		Animation Works Movie
AWP		Algemene Waterschapspartij
AWS		Amazon Web Service
		Amos W. Steinhacker
AWT		Abstract Window Toolkit
AYB		All Your Base
AZC		Asielzoekers Centrum
AZG		Academisch Ziekenhuis Groningen
		Artsen Zonder Grenzen
AZL		Academisch Ziekenhuis Leiden
AZM		Academisch Ziekenhuis Maastrich
AZU		Academisch Ziekenhuis Utrecht