| Abbreviation | Definition |
|---|---|
| AAAM | Advertising Agencies Association of Myanmar |
| AAAM | Association for the Advancement of Automotive Medicine |
| AAAN | Advertising Agencies Association of Nigeria |
| AAAO | Alabama Association of Assessing Officials |
| AAAO | Alaska Association of Assessing Officers |
| AAAP | Alberta Association of Aquatic Professionals |
| AAAP | Amateur Astronomers Association of Pittsburgh |
| AAAP | Amateur Astronomers Association of Princeton |
| AAAP | American Association for Applied Psychology |
| AAAP | American Association of Applied Psychologists |
| AAAP | Arizona Association of Activity Professionals |
| AAAP | Association for the Advancement of AcuEnergetics® Practitioners |
| AAAP | Association of Administrators in Academic Pediatrics |
| AAAP | Australasian Association of Animal Production |
| AAARAFA | Agricultural Agreement for Agricultural Relating to Agricultural Farms Anonymous. |
| AAARS | Association of Accountants and Auditors of Republic of Srpska |
| AAARS | Association of Accountants and Auditors Republika Srpska |
| AAAS | American Association for the Advancement of Science |
| AAAS | Austrian Association for American Studies |
| AAAS | Automotive Aftermarket Association Southeast |