| Abbreviation | Definition |
|---|---|
| ARMB | Acadmie Royale de Mdecine de Belgique |
| ARMB | Royal Academy of Medicine of Belgium |
| ARMTS | Alberta Registered Massage Therapist Society |
| ARMTS | Alberta Registered Massage Therapists Society |
| ARRES | Airdrie Regional Recreation Enhancement Society |
| ARS | American Rhinologic Society |
| ARS | American Rose Society |
| ARS | Archaic Radiotelegraphy Society |
| ARS | Artists Rights Society |
| ARSOM | Académie Royale des Sciences d'Outre-Mer |
| ARSOM | Acadmie Royale des Sciences d'Outre-Mer |
| ARSOM | Koninklijke Academie voor Overzeese Wetenschappen |
| ARSOM | Royal Academy of Overseas Sciences |
| ARU | Asociacin Rural del Uruguay |
| ARU | Asociación Rural del Uruguay |
| ARU | Rural Association of Uruguay |
| AS | -.vb |
| AS | Academia Sinica |
| AS | Académie des Sciences |
| AS | Académie des Sciences à Paris |