| Acronym | Definition |
|---|
| ARNA➣Action Research Network of the Americas (est. 2012) |
| ARNA➣Alfa Romeo Nissan Automobiles |
| ARNA➣American Radiological Nurses Association |
| ARNA➣Arkansas Nurses Association |
| ARNA➣Afferent Renal Nerve Activity (neurology) |
| ARNA➣Annual Report on National Accounts (Japan) |
| ARNA➣Alfa Romeo e Nissan Autoveicoli SpA |
| ARNA➣Australiasian Rehabilitation Nurses' Association (Surrey Hills, Victoria, Australia) |