| Abbreviation | Definition |
|---|---|
| ARMA | Austin Regional Manufacturers Association |
| ARMP | Association récréative Milton Parc |
| ARMP | Association Romande des Métiers de la Pierre |
| ARMSA | Association of Rotational Moulders of Southern Africa |
| ARMSE | Association of Retired Missouri State Employees |
| ARNA | American Radiologic Nurses Association |
| ARNA | Australiasian Rehabilitation Nurses Association |
| ARNO | Association of Royal Naval Officers |
| ARNS | Association of Respiratory Nurse Specialists |
| AROI | Association of Radio Operators of India |
| AROMA | Association Rule Ontology Matching Approach |
| ARP | Association for Research in Personality |
| ARP | Association of Relocation Professionals |
| ARPA | Arizona Rock Products Association |
| ARPAN | Aseed Rural Producers Association Network |
| ARPB | Association of Recognized Professional Bodies |
| ARPM | Association for Rubber Products Manufacturers |
| ARPN | Association of Relocation Professionals in the Netherlands |
| ARPN | Association Roannaise de Protection de la Nature |
| ARPV | Association des randonneurs du pays velauxien |