| AA | spisová skr. |
|---|---|
| AAB | Advertising Association of Baltimore |
| AAB | Airport Advisory Board |
| AAB | Associação dos Arquivistas Brasileiros |
| AAB | Association of Applied Biologists |
| AAB | Associazione Artisti Bresciani |
| AAC | Academic Advisory Center |
| AACO | American Association of Certified Orthoptists |
| AAFJES | holandský spisovateľ a prekladateľ (Lambertus Jacobus Johannes, 1914-1993) |
| AAGAARD | britský (škótsky) šachista a šachový spisovateľ dánskeho pôvodu (Jacob, *1973) |