| Abbreviation | Definition |
|---|---|
| ARP | Air Raid Precautions |
| ARP | Air Refueling Point |
| ARP | Ammunition Refilling Point |
| ARP | Anti-Radiation Projectile |
| ARPA | Advanced Research Projects Agency |
| ARPA | Automatic Radar Plotting Accessory |
| ARPAC | United States Army Pacific Command |
| ARPANET | Advanced Research Projects Agency NETwork |
| ARPC | Air Reserve Personnel Center |
| ARPDD | Automatic Radar Periscope Detection and Discrimination |
| ARPER | ARmy PERsonnel |
| ARPERCEN | United States Army Reserve PERsonnel CENter |
| ARPMIS | Automated Resource and Plan Management Information System |
| ARPRINT | Army Program for Individual Training |
| ARPS | Army Reserve Pre-positioned Sets |
| ARQ | Acquisition Review Quarterly |
| ARQ | Automated Response to Query |
| ARRA | Airborne Reconnaissance Requirements Assessment |
| ARRADCOM | United States Army Armament Research and Development Command |
| ARRC | Allied Command Europe Rapid Reaction Corps |