| Abbreviation | Definition |
|---|---|
| AAHC | Asian American Health Coalition |
| AAHSA | American Association for Homes and Services for the Aging (now known as LeadingAge) |
| AAI | Africa-America Institute |
| AAI | American Artists Incorporated |
| AAI | American Association of immunologists |
| AAI | Animal Association International |
| AAI | Arab American Institute |
| AAIA | Allergy and Asthma Information Association |
| AAIF | AIG Africa Infrastructure Fund |
| AAIF | Arab American Institute Foundation |
| AAII | American Association of Individual Investors |
| AAIP | Association of American Indian Physicians |
| AAIR | Asthma and Allergy Information and Research |
| AAIS | Association of American Indian Services |
| AAITPAB | Amazon Alliance for Indigenous and Traditional Peoples of the Amazon Basin |
| AAJA | Asian American Journalists Association |
| AAKP | American Association of Kidney Patients |
| AAKPI | American Association of Kidney Patients, Inc. |
| AAL | Aid Association For Lutherans |
| AAL | Australian Aborigines League |