| Abbreviation | Definition |
|---|---|
| ARH | Association of Residence Halls |
| ARHC | Association of Refugee Health Coordinators |
| ARIA | Australian Recording Industry Association |
| ARIAH | Association of Research Institutes in Art History |
| ARIB | Association of Radio Industries and Business |
| ARIB | Association of Radio Industries and Businesses |
| ARIB | Association of Radio Industries and Businessess |
| ARIF | Association Romande Des Intermediaires Financiers |
| ARIN | Association of Radiologic and Imaging Nurses |
| ARISC | Association of Russian Independent Seed Companies |
| ARITA | Australian Restructuring Insolvency and Turnaround Association |
| ARK | Association of Responsible Krill |
| ARLT | Association for the Reform of Latin Teaching |
| ARM | Association of Rotational Molders |
| ARM | Association Recovering Motorcyclists |
| ARMA | Abbreviation ARMA means Association |
| ARMA | American Records Management Association |
| ARMA | American Rock Mechanics Association |
| ARMA | Association of Records Managers Administrators |
| ARMA | Association of Renaissance Martial Artists |