English abbreviations from arms to arpa
- ARMS (Attendance Reading And Math For Students)
- ARMSCOR (Armament Manufacturing Corporation (South Africa))
- ARMT (Automated Reset Management Tool)
- ARMTE (Army Materiel Test and Evaluation (Directorate))
- ARMVAL (Anti-armor vehicle evaluation (US))
- ARMY (Ain't Ready For Marines Yet)
- ARN (Stockholm Arlanda Airport)
- ARNC (Alliance of Really Nice Countries)
- ARND (Alcohol-related neurodevelopmental disorder)
- ARNet (Acquisition Reform Network)
- ARNG (Army National Guard)
- ARNGUS (Army National Guard of the United States)
- ARNI (Adoption Resource Network, Inc.)
- ARNOLD (Advanced Results Notification and On-Line Delivery)
- ARNORTH (United States ARmy NORTH)
- ARNS (AppleTallk Remote Network Server)
- ARO (Arboletas Airport)
- AROP (Army Reserve Operational Projects)
- AROS (AROS Research Operating System)
- AROW (Action Research On the Web)
- ARP (Anti-radiation projectile)
- ARPA (Advanced Research Projects Agency)