| AAF | Army Air Forces |
|---|---|
| AAP | Alternate Access Provider |
| AAS | Advances in the Astronautical Sciences |
| AAS | African Academy of Sciences |
| AAS | Aging and Adult Services |
| AAS | Alliance of AIDS Services (skr.) |
| AAS | Associate in Applied Sciences |
| AAS | Austrian Academy of Sciences |
| AAT | Average Access Time |
| ABC | český časopis pre mládež |