| Abbreviation | Definition |
|---|---|
| AAACS | Assistance Animal Access Consulting Services |
| AAAD | Area Agency on Aging and Disability |
| AAAD | Association des Amis des Archives Diplomatiques |
| AAAF | AIDS Awareness Assistance Fund |
| AAAF | Asthma and Allergy Association of Florida |
| AAAH | African American Alliance for Homeownership |
| AAAI | African American Arts Institute |
| AAAI | American Aerobic Association, International |
| AAAI | American Association for Artificial Intelligence |
| AAAI | Association for the Advancement of Artificial Intelligence |
| AAA-IB | Area Agency on Aging One-B |
| AAALAC | Association for the Assessment and Accreditation of Laboratory Animal Care International |
| AAAS | American Academy of Arts and Sciences |
| AAAWE | Association for the Advancement of African Women Economists |
| AABA | Adams Avenue Business Association |
| AABB | American Association of Blood Banks |
| AABC | Associated Air Balance Council |
| AABF | Asian American Bar Foundation |
| AABF-H | Asian-American Bar Foundation - Houston |
| AABMDR | American Association of Bone Marrow Donor Registries |