| Abbreviation | Definition |
|---|---|
| ACS | Advanced Cell Stimulation |
| ACS | Advanced Chamber System |
| ACS | Advantage Cattle Services |
| ACS | Air Charter Service |
| ACS | Air Cleaning System |
| ACS | air conditioning system |
| ACS | All Competition SHotgun |
| ACS | American Cheese Society |
| ACS | American Cycle System |
| ACS | Amtrak Cities Sprinter |
| ACS | Anadolu Cam Sanayii |
| ACS | and ACS Simulator |
| ACS | Anglo Chinese School |
| ACS | ANSWER ACS stands |
| ACS | ARNO Cooling System |
| ACS | Assistant Chief of Staff |
| ACS | Attritbute Combination System |
| ACS | Auto Control System |
| ACS | Automated Collection System |
| ACS | Automated Complaint System |