| AAB | Ateliers-Artistes-Belleville |
|---|---|
| AAC | Airborne Aircraft Controller |
| AAN | Airborne Aircraft Controller |
| ABERCROMBIE | anglický básnik, dramatik, kritik a profesor (Lascelles, 1881-1938) |
| ABS | Automatic Brightness Stabilization controller (skr.) |
| ABS | značka oblečenia od Allen B. Schwartz |
| AC | Animal Collective, experimentálna hudobná skupina |
| AC | Atlantic College |
| ACR | American College of Radiology |
| ACT | American College Test |