| AAB | Advertising Association of Baltimore |
|---|---|
| AAB | Antifašistická Akcia Bratislava (skr.) |
| AAB | Associação dos Arquivistas Brasileiros |
| AAB | Australasian Associated Brewers |
| AAD | Applied Acoustic Design (skr.) |
| AAD | Assistant Athletic Director |
| AAF | American Advertising Federation |
| AAM | Academy of Ancient Music |
| AAM | Advertising Account Manager |
| AAN | American Academy of Nursing |