| AAB | Adaptive Angle Bias |
|---|---|
| AAR | Active Array Radar |
| AAS | Adaptive Antenna System |
| AAS | Allround Automotive Solutions |
| ABAS | Adaptive Behavior Assessment System |
| ABB | Adaptive Body Bias |
| ABC | Active Body Control |
| ABC | Alternative Birth Center |
| ABIOGENÉZA | samoplodenie, nesprávna predstava o vzniku života z neživého |
| ABS | Adaptive Business Systems |