| Abbreviation | Definition |
|---|---|
| APM | Application Performance Management |
| APM | Assignable Program Modulation |
| APP | Applecare Protection Plan |
| APPL | Application |
| APPN | Advanced Peer-to-Peer Networking |
| APS | Active Pixel Sensor |
| APS | All Processes Suspended |
| APS | Application Print Services |
| APS | Application Protection System |
| APT | Automated Programmed Tool |
| AQ | Abap Query |
| AQ | Any Query |
| AQF | Australian Qualification Framework |
| AR | Artificial Reality |
| AR | Attention Routine |
| AR | Augmented Reality |
| ARC | Advanced Risc Computing |
| ARC | Argonaut Risc Core |
| ARD | Abi Respondents Database |
| ARF | Abort Retry Fail |