| AAB | Advertising Association of Baltimore |
|---|---|
| AAF | American Advertising Federation |
| AAM | Advertising Account Manager |
| AAT | Average Access Time |
| ABR | Average Bandwidth Requirement |
| ADD | Adapter Device Driver |
| ADE | Adverse Drug Events |
| ADN | Application Delivery Network |
| ADR | Adverse Drug Reaction |
| ADT | Average Daily Traffic |