| Abbreviation | Definition |
|---|---|
| AHWCS | Advanced Harpoon Weapon Control System |
| AHWCS | Advanced Harpoon Weapons Control System |
| AHWG | AD HOC Working Group |
| AI | Action Item |
| AI | Air Interdiction |
| AI | Airborne Intercept |
| AI | Airborne Interceptor |
| AI | Area of Interest |
| AI | Army Instructor |
| AI | Artificial Intelligence |
| AI2 | Advanced Image Intensification |
| AIA | Air Intelligence Agency |
| AIA | Army Information Architecture |
| AIA | Army Intelligence Agency |
| AIA | Automation Interoperability Appraisal |
| AIAA | Anti Imposter Alliance of America |
| AIAD | Advanced Infantry Air Defense |
| AIASA | Annual Integrated Assessment for Security Assistance |
| AIASA | Annual Integrated Assessment of Security Assistance |
| AIC | Air Intercept Control |