| Abbreviation | Definition |
|---|---|
| ADL | ASCII Display List |
| ADMD | Administrative Management Domain |
| ADMDS | Administrative Management Domains |
| ADODB | ActiveX Data Object Data Base |
| ADP | Active Data Page |
| ADP | Analysis, Design, and Programming |
| ADPE | Automatic Data Processing Equipment |
| ADQ | Ata Drive Query |
| ADRAM | Asynchronous Dynamic Random Access Memory |
| ADRG | Arc Digitised Raster Graphics |
| ADS | Active Directory Services |
| ADS | Alternate Data Streams |
| ADT | Abstract Data Type |
| ADTM | Autonomous DNA Turing Machine |
| ADTS | Audio Data Transport Stream |
| ADUC | Active Directory Users and Computers |
| ADUS | Archived Data User Service |
| ADVD | Audio Digital Versatile Disc |
| AE | Active Entity |
| AEA | Activity End Acknowledge |