| AAB | Advertising Association of Baltimore |
|---|---|
| AAB | Airport Advisory Board |
| AAC | Academic Advisory Center |
| AAF | American Advertising Federation |
| AAM | Advertising Account Manager |
| AAS | Advances in the Astronautical Sciences |
| AAS | Airport Advisory Service |
| AAS | Arabian Advanced Systems |
| ABC | Advanced Base Component |
| ABE | Advanced Boresight Equipment |