| Abbreviation | Definition |
|---|---|
| ARVO | Association for Research in Vision Ophthalmology |
| ARW | Association of Retired Winkers |
| ARWA | Alabama Rural Water Association |
| ARWA | Alaska Rural Water Association |
| ARWA | Arkansas Rural Water Association |
| ARYA | Australian Radio Yachting Association |
| ARZA | Association of Reform Zionists of America |
| ASA | Allen Sports Association |
| ASA | Amateur Sports Association |
| ASA | American Soybean Association |
| ASA | American Sportfishing Association |
| ASA | American Staffing Association |
| ASA | American Studies Association |
| ASA | American Suppressor Association |
| ASA | Archery Shooters Association |
| ASA | Association of Subcontractors and Affiliates |
| ASAA | African Studies Association of Africa |
| ASAA | Alaska State Archery Association |
| ASAA | Arkansas Security Alarm Association |
| ASAA | Army Security Agency Association |