| AAB | Associação dos Arquivistas Brasileiros |
|---|---|
| AAD | Assistant Athletic Director |
| AAL | belgický žurnalista a politik (Henri Francois, 1933-2001) |
| AAS | Approved As Stands |
| AAS | Australian Accounting Standard |
| ABA | čoby (zastar.) |
| ABA | uhorský krajinský hodnostár, oligarcha (Omodej, ???-1311) |
| ABC | American Broadcasting Company, americká rozhlasová a televízna spoločnosť, televízna stanica v USA |
| ABE | Assistant Brigade Engineer |
| ABS | Airport Base Station, WLAN riešenie od firmy Apple |