| AACO | Arizona Association of Counties (skr.) |
|---|---|
| AAM | Advertising Account Manager |
| AAS | Allround Automotive Solutions |
| AAS | Australian Accounting Standard |
| AAT | Association of Accounting Technicians |
| ABA | Accredited Business Accountant |
| ABE | Army Background Experiment |
| ABI | Advanced Boundary Information |
| AC | account (skr.), účet (angl.skr.) |
| AC | account current (skr.), bežný účet (angl.skr.) |