| Abbreviation | Definition |
|---|---|
| AAPT | American Association of Physics Teachers |
| AAPT | Association of Asphalt Paving Technologists |
| AAPU | Alumni Association of Panjab University |
| AAPU | Association of African Private Universities |
| AAPU | Association of Ambulance Professionals Uganda |
| AAQ | Association of Acupuncturists of Quebec |
| AAQ | Astronomical Association of Queensland |
| AAQS | African Association of Quantity Surveyors |
| AAR | Association for Automated Reasoning |
| AAR | Association Of Alexandria Radiologists |
| AAR | Association of Authors' Representatives |
| AARA | Albany Amateur Radio Association |
| AARA | Anaheim Amateur Radio Association |
| AARC | American Association of Retirement Communities |
| AARCM | Association of Risk and Crisis Management (Hong Kong) |
| AARF | American Association of Retiring Furry |
| AARINENA | Association of Agricultural Research Institutions in the Near East and North Africa |
| AARM | Alberta Association of Radiology Managers |
| AARM | Association for the Advancement of Relationship Marketing |
| AARO | Association of Appraiser Regulatory Officials |