| AAF | Audit Automation Facilities |
|---|---|
| AAM | audio adapter module |
| AAO | Area Audit Office |
| AAS | American Auditory Society |
| ABBADO | taliansky dirigent (Claudio, *1933) |
| ABBADO | taliansky dirigent, šéfdirigent orchestra v Mníchove a orchestra Bavorského rozhlasu, otec Claudio (Roberto, *1954) |
| ABC | Audit Bureau of Circulations |
| AC | audio codec (skr.) |
| ACP | Audio Control Panel |
| ACU | Audio Control Unit |