| Abbreviation | Definition |
|---|---|
| ARM | Asynchronous Response Mode |
| ARM | Atomic Resolution Microscope |
| ARM | Attract Retain And Motivate |
| ARM | Autism rights movement |
| ARM | Automatic Refill Maintenance |
| ARMA | American Records Management Association |
| ARMA | American Registry of Medical Assistants |
| ARMA | American Rock Mechanics Association |
| ARMA | Association of Records Managers Administrators |
| ARMA | Auto Regressive Moving Average |
| ARMADA | Armed Royal Malaysian Aerospace Defence Agency |
| ARMADILLO | Attitude Related Maneuvers And Debris Instrument in Low L Orbit |
| ARMAN | Ant Routing for Mobile Adhoc Networks |
| ARMAN | Archaeal Richmond Mine Acidophilic Nanoorganisms |
| ARMAN | Archael Richmond Mine Acidophilic Nanoorganisms |
| ARMAP | Adaptive Reservation Multiple Access Protocol |
| ARMAR | Augmented Reality for Maintenance And Repair |
| ARMB | Académie royale de Médecine de Belgique |
| ARMB | Alaska Retirement Management Board |
| ARMB | Alpine Resort Management Board |