| Acronym | Definition |
|---|
| AAA | American Automobile Association |
| AAA | Battery Size |
| AAA | Anti-Aircraft Artillery |
| AAA | Agricultural Adjustment Administration |
| AAA | Amateur Athletic Association (of England) |
| AAA | Analog/Analog/Analog (audio CD format, recording/mixing/mastering) |
| AAA | American Arbitration Association |
| AAA | Authentication, Authorization, and Accounting |
| AAA | Archives of American Art (Smithsonian Institution) |
| AAA | Abdominal Aortic Aneurysm |
| AAA | Area Agency on Aging |
| AAA | American Anthropological Association |
| AAA | AOES (Advanced Orbital Ephemeris System) Accuracy Assessment |
| AAA | American Accounting Association |
| AAA | American Academy of Audiology |
| AAA | Access All Areas (Sony music project) |
| AAA | Against All Authority (gaming clan) |
| AAA | Against All Authority (punk band) |
| AAA | Armenian Assembly of America |
| AAA | Asian American Association |
| AAA | American Airlines Arena (Miami Florida) |
| AAA | African Action on AIDS |
| AAA | Aromatic Amino Acid |
| AAA | Ariana Afghan Airlines |
| AAA | Angels and Airwaves (band) |
| AAA | Australian Automobile Association |
| AAA | Amino Acid Analysis |
| AAA | American Academy of Actuaries |
| AAA | American Ambulance Association |
| AAA | American Association of Anatomists |
| AAA | Asian American Action (fund) |
| AAA | Arkansas Activities Association (North Little Rock, Arkansas) |
| AAA | Appraisers Association of America |
| AAA | American Academy of Advertising |
| AAA | Autoridad de Acueductos y Alcantarillados (Aqueduct and Sewer Authority, Puerto Rico) |
| AAA | Army Audit Agency |
| AAA | Advanced Aircraft Analysis |
| AAA | American Association of Advertising Agencies |
| AAA | American Accordionists' Association |
| AAA | Austin Apartment Association (Austin, TX) |
| AAA | American Angus Association |
| AAA | American Arts Alliance (Washington, DC) |
| AAA | Amateur Astronomers Association (New York City, NY) |
| AAA | Animal-Assisted Activity |
| AAA | Alianza Anticomunista Argentina (Argentinian paramilitary organization, 1970s) |
| AAA | Triple antibiotic ointment (bacitracin, neomycin, polymixin) |
| AAA | Accumulated Adjustments Account (US Federal Income Tax) |
| AAA | American Abstract Artists |
| AAA | Asociacion Argentina de Actores |
| AAA | Authentication, Authorization and Access |
| AAA | American Avalanche Association |
| AAA | Asian American Alliance |
| AAA | Agricultural Adjustment Act of 1933 |
| AAA | Anything, Anytime, Anywhere |
| AAA | Antique Airplane Association |
| AAA | Asistencia Asesoria y Administracion (Mexico wrestling) |
| AAA | Access Approval Authority |
| AAA | Association of Autonomous Astronauts |
| AAA | Adaptive Array Antenna |
| AAA | Associate of Applied Arts |
| AAA | Alien Adoption Agency (online game) |
| AAA | Alien Adoption Agency |
| AAA | Angle Angle Angle (geometric proof) |
| AAA | Animal Agriculture Alliance (veterinary) |
| AAA | Agro-Action Allemande |
| AAA | Annals of Archaeology and Anthropology |
| AAA | Atlanta Apartment Association (Atlanta, GA) |
| AAA | Airport Airspace Analysis |
| AAA | Album Adult Alternative (radio format) |
| AAA | Aspen Achievement Academy |
| AAA | Alstyle Apparel & Activewear (clothing) |
| AAA | Australian Archaeological Association Inc. |
| AAA | Allgrove Syndrome |
| AAA | Aces of ANSI Art |
| AAA | Administration, Authorization, and Authentication (Software Security) |
| AAA | Anesthesia Administration Assembly |
| AAA | Authorization Accounting Activity |
| AAA | Austrian Automotive Association |
| AAA | Archaiologika Analekta Ex Athenon (Athens Annals of Archaeology) |
| AAA | Accountability and Assessment |
| AAA | Age Anaesthesia Association |
| AAA | American Armwrestling Association |
| AAA | arrival and assembly area |
| AAA | Auburn Adventist Academy (Auburn, Washington, USA) |
| AAA | Ancylostomiasis (endemic anaemia of ancient Egypt) |
| AAA | Army Ammunition Activity |
| AAA | Authorized Accounting Activity |
| AAA | Association of Accountants and Auditors |
| AAA | Achalasia-Addisonianism-Alacrima (Syndrome) |
| AAA | Alliance Against AIDS |
| AAA | Atlas of Ancient Archaeology |
| AAA | Automatic Anti-Aircraft (DOD) |
| AAA | Air Avenue of Approach |
| AAA | American Allergy Association |
| AAA | Amyloid of Aging and Alzheimer Disease |
| AAA | Antique Automobile Association |
| AAA | Assign Alternate Area |
| AAA | Astronaut-Actuated Abort |
| AAA | Acute Anxiety Attack |
| AAA | Alpha-1 Association of Australia (South Perth, WA, Australia) |
| AAA | Associação dos Alcoólicos Anônimos (Portuguese Alcoholics Anonymous Society) |
| AAA | Allocations, Assessments, and Analysis |
| AAA | Acquisition Approval Authority |
| AAA | AEGIS Acquisition Agent |
| AAA | American Academy of Addictionology |
| AAA | Automated Airlift Analysis |
| AAA | Awaiting Aircraft Availability |
| AAA | Aerospace Engineering, Applied Mechanics, and Aviation |
| AAA | Asociacion Anticomunista Argentina |
| AAA | Alacrima-Achalasia-Adrenal Insufficiency (neurologic disorder) |
| AAA | Andalan Artha Advisindo (Securities) |
| AAA | Australian Army Aviation |
| AAA | Alternate Assembly Area |
| AAA | Australian Association of Accountants |
| AAA | Anti-Air Assist (gaming) |
| AAA | Association of Avatar Artists |
| AAA | Anticipative Adaptive Array (frequency-hopping communications) |
| AAA | American Audit Associates |
| AAA | Airborne Assault Area |
| AAA | Action Awareness Alert |
| AAA | Attitude, Awareness and Accountability (ski safety program) |
| AAA | Anygame Anytime Anyplace (gaming clan) |
| AAA | Alaska Activities Adventures Plus Tours |
| AAA | Anti-Attack Aura (Star Ocean: Till the End of Time, game) |
| AAA | Arkansas Ambulance Association |
| AAA | Airborne Array Aperture |
| AAA | Advanced Acoustic Array |
| AAA | ANSI Artists of America |
| AAA | Aircraft Alert Area |
| AAA | Arkansas Aluminum Alloys, Inc (Hot Springs, Arkansas) |
| AAA | Available, Accessible and Affordable |
| AAA | Association of Active Shareholders (France) |
| AAA | Asian Awareness Association |
| AAA | Alabama Apartment Association (Birmingham, AL) |
| AAA | Action on Alcohol Abuse |
| AAA | ASP Application Aggregator |
| AAA | Antiaircraft Antiarmor (Weapon) |
| AAA | Animal Acupuncture Academy |
| AAA | Aiesec Alumni Association (CIS) |
| AAA | Association Against Acronyms (Facebook group) |
| AAA | Alacrima-Achalasia-Addisonianism |
| AAA | Adjust for ASCII Addition (X86) |
| AAA | Active Antenna Array |
| AAA | Addisonian-Achalasia Syndrome |
| AAA | Arkansas Apartment Association (Little Rock, AR) |
| AAA | African Awareness Association |
| AAA | Assessment of Aircraft Attrition |
| AAA | ACTH-Resistant Adrenal Insufficiency, Achalasia and Alacrima |
| AAA | Area Advisory Authority |
| AAA | Advanced Acoustic Analysis |
| AAA | Anti-Acronym Abuse |
| AAA | Athiest and Agnostic Association |
| AAA | American Andalusian Association |
| AAA | Advanced Assault Amphibians |
| AAA | Advanced Adaptive Autopilot |
| AAA | Asociación Asperger Andalucía |
| AAA | Alpha Associates Alliance (Knoxville, Tennessee) |
| AAA | Association Algerriene d'Alphabetisation |
| AAA | Aeiou's Alien Archeology (NASA explores) |
| AAA | Highest Level of League (minor league baseball) |
| AAA | Action Aid Afghanistan (NGO) |
| AAA | Action Aid Australia |
| AAA | Aperture Antenna Analysis |
| AAA | Asociación de Amigos en Acción (Guatemala) |
| AAA | Academia de Automovilismo Andrade (Guatemala) |
| AAA | Adaptable, Accessible and Affordable (disability treatment, Australia) |
| AAA | Anonymous Artists Army |