| Acronym | Definition |
|---|
| AAAA | American Association of Advertising Agencies |
| AAAA | American Association for Affirmative Action |
| AAAA | Army Aviation Association of America |
| AAAA | Battery Size |
| AAAA | American Association of Amateur Astronomers |
| AAAA | Asociación Argentina Amigos de la Astronomía (founded in Buenos Aires, Argentina in 1929) |
| AAAA | Aerial Agricultural Association of Australia |
| AAAA | Albuquerque Aerostat Ascension Association (Albuquerque, New Mexico) |
| AAAA | Associated Actors and Artistes of America |
| AAAA | Alamo Area Aquatic Association (San Antonio, TX) |
| AAAA | Association of Area Agencies on Aging |
| AAAA | Atlanta Area Aquarium Association |
| AAAA | Authentication, Authorization, Accounting and Auditing (remote access security approach that controls network access) |
| AAAA | Association for Applied Animal Andrology |
| AAAA | Asian Amateur Athletic Association |
| AAAA | Always Afloat Always Accessible (shipping) |
| AAAA | Akron Area Arts Alliance (Ohio) |
| AAAA | Asian American Arts Alliance |
| AAAA | American Association Against Acronyms :-) |
| AAAA | Association of Accredited Advertising Agents Malaysia |
| AAAA | American Association for the Advancement of Atheism |
| AAAA | American Academy of Anesthesiologists Assistants |
| AAAA | Amateur Athletic Association of America |
| AAAA | Anonymous Acronym Abuse Association |
| AAAA | Antique Advertising Association of America (Petersburg, IL) |
| AAAA | Australian Association of Advertising Agencies |
| AAAA | Ajoittain Aivokuollut Ajanvietto Armeija (Finnish: Occasionally Brain-dead Pastime Army; gaming clan, BF1942) |
| AAAA | American Association of Amateur Arborists |
| AAAA | Advanced Architectures for Airborne Arrays |
| AAAA | Alabama Accumulated Adjustment Account (Alabama Income Tax Form 20S) |
| AAAA | American Academy Alumni Association, Inc. |