| Abbreviation | Definition |
|---|---|
| RAINN | Rape Abuse Incest National Network |
| RAL | Ranap Adaptation Layer |
| RAMS | Remote Agent Master Server |
| RAN | Radio Access Network |
| RAN | Regional Area Network |
| RAN | Road Action Network |
| RAP | Rate Adaptation Protocol |
| RAP | Relay Access Probe |
| RAP | Repository Access Protocol |
| RAPC | Repeated Acquisition and Performance Chamber |
| RAPD | Rapid Application Protocol Driver |
| RAPS | Real Applications Of Parallel Systems |
| RARP | Reverse Address Recognition Protocol |
| RAS | Remote Access Server |
| RAS | Remote Access Service |
| RAS | Remote Access System |
| RAS | Resource Allocation And Scheduling |
| RAT | Remote Access Terminal |
| RAT | Remote Administration Tool |
| RAT | Routing Addressing Table |