| AAB | Application Architecture Blueprint |
|---|---|
| AAE | automatic answering equipment (skr.) |
| ABA | arabská pelerína |
| ACU | Asian Clearing Union (skr.) |
| AES | Audio Engineering Society |
| ANN | britská princezná (*1950) |
| APH | American Printing House (skr.) |
| AUR | Acute Urinary Retention, akútne zadržiavanie moču (angl.skr.) |
| AVA | Austrálska veterinárna asociácia (skr.) |
| AVI | Association for Veterinary Informatics |