| Abbreviation | Definition |
|---|---|
| ADC | Automatic Data Collection |
| ADCU | Association of Data Communications Users |
| Add | Addenda |
| ADD | Apple Data Detectors |
| ADD | Attribute Driven Design method |
| ADDC | Automatic Data Direction Control |
| ADDIE | Analyze, Design, Develop, Implement, and Evaluate |
| ADDMD | Administrative Directory Management Domain |
| ADE | Advanced Document Engineering |
| ADE | Archive Data Extract |
| ADF | Advance Data Format |
| ADF | Amiga Disc Format |
| ADFS | Apple DOS File System |
| ADG | Annotated Domain Graphics |
| ADGSS | A D General Services Studio |
| ADHOC | Allied Destructive Hackers Of Columbia |
| ADI | Accessibility & Distribution of Information |
| ADI | Application Data Interface |
| ADI | Automatic Data Interface |
| ADL | Architecture Definition Language |