| AAC | Airborne Aircraft Controller |
|---|---|
| AAN | Airborne Aircraft Controller |
| ABC | Active Body Control |
| ABC | American Bowling Congress |
| ABS | Automatic Brightness Stabilization controller (skr.) |
| ACC | Adaptive Cruise Control |
| ACC | Air Control Center |
| ACC | Automatic Current Control |
| ACI | Access Control Instruction |
| ACI | American Concrete Institute |