| Acronym | Definition |
|---|
| ARN➣Auburn (Amtrak station code; Auburn, CA) |
| ARN➣Ácido Ribonucleico (Spanish: Ribonucleic Acid) |
| ARN➣Access Research Network |
| ARN➣Amazon Resource Name |
| ARN➣Advanced Remote Node |
| ARN➣Acide Ribonucléique (French: RNA) |
| ARN➣Application Reference Number |
| ARN➣Association of Rehabilitation Nurses |
| ARN➣Autoridad Regulatoria Nuclear (Argentina) |
| ARN➣Alien Registration Number (US Citizenship & Immigration Services) |
| ARN➣Acute Retinal Necrosis (fast death of the retina) |
| ARN➣Aviation Reference Number (Civil Aviation Safety Authority; Australia) |
| ARN➣Appui Réversible Normalisé (French: Reversible Standardized Support; limestone production) |
| ARN➣American Rugby News |
| ARN➣Additional Reference Number |
| ARN➣Actions Réseaux Numériques (French: Shares Digital Network; est. 1998) |
| ARN➣Stockholm, Sweden - Arlanda International (Airport Code) |
| ARN➣Animal Rights Network |
| ARN➣Arabian Reseller News |
| ARN➣Animal Reference Number (data) |
| ARN➣Aeronautical Radio Navigation |
| ARN➣Aménagement et Risques Naturels (French: Planning and Natural Risks; French Bureau of Geological and Mining Research) |
| ARN➣Alabama Radio Network |
| ARN➣Alliance pour la Résistance Nationale (French: Alliance for National Resistance; est. 2001) |
| ARN➣Account Reference Number (finance) |
| ARN➣Alternate Reference Number |
| ARN➣Adjunct Routing Number (AT&T) |
| ARN➣Auction Rate Note (finance) |
| ARN➣Alteration Request Number |
| ARN➣Acquirer Reference Number (account tracking) |
| ARN➣Air Request Network |