| Abbreviation | Definition |
|---|---|
| ABC | Application Browser Compatability |
| ABC | Approximate Bootstrap Confidence |
| ABCDCommittee | Harvard University-wide computer user group |
| ABCL | Actor Based Concurrent Language |
| ABCU | Association Of Burroughs Computer Users |
| ABEND | ABnormal END |
| ABGM | Annual Budget General Meeting |
| ABI | Acquired Brain Injury |
| ABMA | All But Manager Access |
| ABMD | Automatically Backup My Documents |
| ABS | Allocation Based Scheduling |
| ABS | Automated Batch Submission |
| ABU | Accepted, But Unusable |
| ABU | Application Business Unit |
| ABUI | Association of Banyan Users International |
| ABUS | Accepted, But Uninstalled System |
| AC | Audio Coding |
| AC97 | Audio Codec 97 |
| ACA | Arrowpoint Content Awareness |
| ACA | Avanade Connected Architectures |