| Abbreviation | Definition |
|---|---|
| ACS | Air Con System |
| ACS | Air Craft Spruce |
| ACS | Anti-Clip System |
| ACSR | Aluminum Conductor Steel Reinforced |
| ACTS | Advanced Container Transport System |
| ACTS | Automatically Compensated Top Stop |
| ACV | Apple Cider Vinegar |
| ACVR | Advanced Crystal Video Receiver |
| ACVT | Automatic Continuously Variable Transmission |
| ACW | Advanced Computer Watch |
| ACW | Air Coupled Woofer |
| ACWD | Allis-Chalmers Model 'WD' farm tractor |
| ADACS | Advanced Deburring And Chamfering System |
| ADAS | Advanced Driver Assistance System |
| ADC | Aluminum Die Cast |
| ADCF | Animal Derived Component Free |
| ADD | Approximate Delivery Date |
| ADDC | Angle-Dependent Dip Coating technique |
| ADESCO | Automotive Dealership Equipment Service Company |
| ADG | Air Driven Generator |