| AAL | belgický žurnalista a politik (Henri Francois, 1933-2001) | 
|---|---|
| AAP | Alternate Access Provider | 
| AAS | Alternate Architecture Study | 
| ABAZ | stará perzská strieborná minca | 
| ABBADIA | talianska operná speváčka (Luigia, 1821-1896) | 
| ABBOTT | americká operná speváčka - sopranistka (Emma, 1850-1891) | 
| ABC | Alternative Birth Center | 
| ABP | Alternating Bit Protocol | 
| ABS | Alternative Bank Schweiz, švajčiarska banka so sídlom v Oltene | 
| ABS | Alternative Billing Service |