| AAB | Alliance Agricole Belge |
|---|---|
| AAC | Alliance Agricole Belge |
| AAI | Alliance of American Insurers |
| AAR | Alliance for Aging Research |
| AAS | Alliance of AIDS Services (skr.) |
| ACA | Aircraft Carrier Alliance |
| ACI | alliance Cooperative Internationale (skr.) |
| ADA | Alternative Distribution Alliance |
| ADS | Alliance Data Systems |
| AKARNÁN | syn argejského hrdinu Alkmaióna a jeho druhej manželky Kallirhoy |