| AAB | Advertising Association of Baltimore |
|---|---|
| AAB | American Association of Bioanalytics |
| AAB | Association of Aircraft Brokers, Združenie sprostredkovateľov v leteckej doprave (angl.skr.) |
| AAB | Association of Applied Biologists |
| AACO | American Association of Certified Orthoptists |
| AACO | Arizona Association of Counties (skr.) |
| AACO | Assault Airlift Control Officer |
| AAE | American Association of Engineers (skr.) |
| AAE | Association of Art Editors |
| AAM | American Association of Museums |