| Abbreviation | Definition |
|---|---|
| AHPI | Association of Healthcare Providers India |
| AHPP | Association for Humanistic Psychology Practitioners |
| AHQ | Association Hôtellerie Québec |
| AHRA | Alexandria Human Resources Association |
| AHRA | American Hot Rod Association |
| AHRE | Association of Hospitality Recruiting Executives |
| AHRI | Association of Human Rights Institutes |
| AHSA | Alaska Head Start Association |
| AHSA | American Horse Shows Association |
| AHSA | Arizona Head Start Association |
| AHSA | Asian Hustle and Salsa Association |
| AHSA | Association of Hispanic School Administrators |
| AHVA | Association of Heating, Ventilating and Air Conditioning |
| AHWA | Arab Health Water Association |
| AHWA | Arab Healthy Water Association |
| AHWA | Art History Webmasters Association |
| AIA | American Infertility Association |
| AIA | Arizona Interscholastic Association |
| AIA | Association of International Architects |
| AIA | Automated Imaging Association |