| AC | adult contemporary music (skr.), druh hudby v rádiách |
|---|---|
| AC | Anticipated Convection, kód pre predpovede silnej búrky |
| ACC | Air Control Center |
| ACI | American Concrete Institute |
| ACR | Access Control Register |
| ACS | Air Conditioning System |
| ACT | Air Control Team |
| ACT | Alternative Control Technology |
| ACTS | Abroll-Container-Transport-System, systém kombinovanej dopravy v oblasti železnica-cesta |
| ACU | Antenna Control Unit |