| Abbreviation | Definition |
|---|---|
| APNC | Alumni Powerhouse Networking Conferences |
| APON | Association Of Pediatric Oncology Nurses |
| APON | Atm Passive Optical Network |
| APOP | Authentication Post Office Protocol |
| APOT | Additional Point Of Termination |
| APPI | Advanced Peer-to-Peer Internetworking |
| APPL | Application Portable Parallel Library |
| APPN | Advanced Peer to Peer Networking |
| APRIL | Automated Picture Retrieval Independent Of Location |
| APS | Aol Password Stealer |
| APS | Application Provider Services |
| APS | Asynchronous Port Switch |
| APSTNDP | Application, Presentation, Session, Transport, Network, Data-link, Physical (network layers) |
| APT | Automatically Programmed Tool |
| APTN | A People Together Network |
| AR | Asynchronous Request |
| ARA | Appletalk Remote Access |
| ARAP | AppleTalk Remote Access Protocol |
| ARC | Advanced Resource Connector |
| ARC | Advanced Router Configuration |