| Abbreviation | Definition |
|---|---|
| AAIA | Aden-Abyan Islamic Army |
| AAIFF | Air-to-Air Identification Friend or Foe |
| AAIP | Approved Aircraft Inspection Program |
| AAIRS | Automatic Acquisition Infrared Seeker |
| AAIS | ACE ACCIS Implementation Strategy |
| AAIS | Anti-Aircraft Intelligence Service (World War II) |
| AAIS | Automated Acquisition Information System |
| AAISFT | Army Aircraft Inventory, Status, and Flying Time (report) |
| AAL | Additional Authorization List |
| AAL | Asynchronous Transfer Mode Adaptation Layer |
| AAL | ATM (Asynchronous Transfer Mode) Adaptation Layer |
| AAL | Authorized Allowance List |
| AALC | Advanced Airdrop for Land Combat |
| AALC | Australian Army Legal Corps |
| AALOC | Active Army Location |
| AALPS | Automated Air Load Planning System |
| AALS | Acoustic Artillery Location System |
| AAM | Adopt A Minefield |
| AAM | Air To Air Missile |
| AAM | Air-To-Air Missile |