| Abbreviation | Definition |
|---|---|
| ARID | Army Range Inventory Database |
| ARIEM | Army Research Institute of Environmental Medicine |
| ARIL | Automated Return Item List |
| ARIP | Air Refueling Initiation Point |
| ARISC | Army Reserve Intelligence Support Center |
| ARISS | Army Recruiting Information Support System |
| ARL | Air Reconnaissance Low |
| ARL | Army Research Lab |
| ARL | Army Research Library |
| ARLANT | ARmy component of United States AtLANTic Command |
| ARL-M | Airborne Reconnaissance Low-Multifunction |
| ARLO | Air Reconnaissance Liaison Officer |
| ARLOC | Army Location Code |
| ARLS | Automated Retail Logistics Systems |
| ARM | ADP Resources Manager |
| ARM | Ammunition Requirement and Movement |
| ARM | Anti Radiation Missile |
| ARM | Anti-Radiation Missile |
| ARMAC | Atlanta Regional Military Affairs Council |
| ARMB | Army Requirements and Management Board |