| AAB | Alliance Agricole Belge |
|---|---|
| AAC | Alliance Agricole Belge |
| AAI | Alliance of American Insurers |
| AAR | Alliance for Aging Research |
| AAS | All About Symbian |
| AAS | All-America Selections |
| AAS | Alliance of AIDS Services (skr.) |
| AAS | Allround Automotive Solutions |
| AAV | kód letiska Allah |
| ABA | American Basketball Association |