| AAAP | Adult Archery Achievement Program 
| Others |
| AAAP | Alabama Autism Assistance Program
| Others |
| AAAP | Alberta Association of Aquatic Professionals
| Others |
| AAAP | Alliance for Arizona Animal Protection
| Others |
| AAAP | Alumni Admissions Ambassador Program
| Others |
| AAAP | Amateur Astronomers Association of Pittsburgh
| Others |
| AAAP | Amateur Astronomers Association of Princeton
| Others |
| AAAP | American Academy of Addiction Psychiatry
| Others |
| AAAP | American Association for Applied Psychology
| Others |
| AAAP | American Association of Applied Psychologists
| Others |
| AAAP | American Association of Applied Psychology
| Others |
| AAAP | American Association of Avian Pathologists
| Others |
| AAAP | Amino Acid Auxin Permease
| Others |
| AAAP | Aortic Aneurysm Antigenic Proteins
| Others |
| AAAP | Arizona Association of Activity Professionals
| Others |
| AAAP | Art Agency And Production
| Others |
| AAAP | As Accurate As Possible
| Others |
| AAAP | Associate of the Association of Accountancy Practitioners
| Others |
| AAAP | Association of Administrators in Academic Pediatrics
| Others |
| AAAP | Atheist Agnostic Alliance Pakistan
| Others |
| AAAP | Atheist and Agnostics Alliance Pakistan
| Others |
| AAAP | Atheists & Agnostics Alliance Pakistan
| Others |
| AAAP | Auckland Action Against Poverty
| Others |
| AAAP | Automated Advanced Acquisition Platform
| Others |
| AAAP | Automated Advanced Acquisition Program
| Others |