| Abbreviation | Definition |
|---|---|
| AMTC | Aviation and Missile Technology Consortium |
| AMTTOSS | Aircraft Maintenance Task Oriented Support System |
| AMU | Aircraft Maintenance Unit |
| AMU | Audio Management Unit |
| AMUX | Audio Multiplexer |
| AMWC | Air Mobility Warfare Center |
| ANA | All Nippon Airways |
| ana | Australian National Airways |
| ANAC | Airport Noise Advisory Committee |
| ANAC | Autorité Nationale de l'Aviation Civile |
| ANCCG | Aircraft Noise Community Consultative Group |
| ANGB | Air National Guard Base |
| ANMAC | Aircraft Noise Monitoring Advisory Committee (UK) |
| ANMP | Aviation Networks and Mission Planning |
| ANMS | Airport Noise Management System |
| ANP | Aircraft Noise and Performance |
| ANS | Ambient Noise Sensor |
| ANSP | Aviation, Navigation, and Satellite Programs, |
| ANT | Antenna |
| AO | Airport Operations |