| Abbreviation | Definition |
|---|---|
| AA-6 | Acrid Missile |
| AA-7 | Apex Missile |
| AA-8 | Aphid Missile |
| AA-9 | Amos Missile |
| AAA | Access All Areas |
| AAA | Air Avenue of Approach |
| AAA | Airborne Assault Area |
| AAA | Allied Airborne Army |
| AAA | Alternate Assembly Area |
| AAA | Anarchy Armageddon Annihilation |
| AAA | Anti Aircraft Artillery |
| AAA | Anti-Aircraft Artillery |
| AAA | Army Audit Agency |
| AAA | Arrival and Assembly Area |
| AAA | Assign Alternate Area |
| AAA | Authority Authorization Auditing |
| AAA | Awaiting Aircraft Availability |
| AAAA | Army Aviation Association of America |
| AAACO | Army Airborne/Airlift Coordinating Office |
| AAACS | Accuracy Analysis of Artillery Cannon Systems |