| Abbreviation | Definition |
|---|---|
| APL | Airport Lights |
| APL | American President Lines, Ltd. |
| APM | Accurate Pistonic Motion |
| APM | All Pilots Meeting |
| APM | Automated People Mover |
| APM | Automotive Playback Modules |
| APMS | Airline Passenger Management System |
| APMS | Automated Performance Measurement System |
| APMS | Aviation Performance Monitoring System |
| APN | Airborne Pulse Navigation |
| APO | Office of Aviation Policy and Plans |
| APORTS | Aerial Ports and Air Operating Bases |
| APP | Accelerator Pedal Postion |
| APP | Office of Airport Planning and Programming |
| APPCG | All Party Parliamentary Cycling Group |
| APR | Advisory and Payment Request |
| APRT | Airport |
| APRV | Automated Pavement Repair Vehicle |
| APS | Accessible Pedestrian Signal |
| APS | Active Point System |