| Abbreviation | Definition |
|---|---|
| ACU | Array Configuration Utility |
| ACURR | Alternative Currency (SAP Feature) |
| ACVC | Ada Compiler Validation Capability |
| ACVT | Archive Converter |
| ACWG | Abstract Complex Workflow Generator |
| ACWG | American Civil War: Gettysburg (computer game) |
| AD | Adaptive Dither |
| AD | Application Development |
| AD | Applications Development |
| ADA | A Detection Algorithm |
| ADA | Programming language named after Lady Ada Augusta Byron |
| ADAC | Advanced Digital Acoustic Coding |
| ADADL | Ada Design and Documentation Language |
| ADAM | Active Design and Analysis Modeling |
| ADAM | Active Directory Application Mode |
| ADAM | Algorithm Development And Mining |
| ADAMS | Automated Dynamic Analysis of Mechanical Systems |
| ADAS | ARPS Data Analysis System |
| ADASS | Astronomical Data Analysis Software and Systems |
| ADC | Automatic Data Completion |