| Abbreviation | Definition |
|---|---|
| AALC | Autonomous Approach Landing Capability |
| AAMA | American Automobile Manufacturers Association |
| AAMCO | All Automatics Must Come Out |
| AAMS | Air Automated Manifest System |
| AAMV | Aerodynamically Alleviated Marine Vehicles |
| AAMVA | American Association of Motor Vehicle Administrators |
| AAN | Air Ambulance Network |
| AAO | Air Access Only |
| AAP | Advanced Automation |
| AAPA | American Association of Port Authorities |
| AAPA | Australian Airline Pilot Academy |
| AAPR | Association for Airline Passenger Rights |
| AAR | Airport Acceptance Rate |
| AARP | Adopt A Road Program |
| AAS | Aerospace Advocates Society |
| AAS | Airport Advisory Service |
| AASG | Automotive Appraisal Services Group |
| AASHO | American Association of State Highway Officials |
| AASHTO | American Association of State and Highway Transportation Officials |
| AASHTO | American Association of State Highway and Transport Officials |