| AAB | Alliance Agricole Belge |
|---|---|
| AAB | Ateliers-Artistes-Belleville |
| AAC | Airborne Aircraft Controller |
| AAC | Alliance Agricole Belge |
| AAN | Airborne Aircraft Controller |
| AAS | All About Symbian |
| ABA | American Basketball Association |
| ABERCROMBIE | anglický básnik, dramatik, kritik a profesor (Lascelles, 1881-1938) |
| ABS | Aachener Bergmanns-Siedlungsgesellschaft |
| ABS | Alternative Billing Service |