| Abbreviation | Definition |
|---|---|
| RSS | Routers, Servers, and Switches |
| RSTP | Rapid Spanning Tree Protocol |
| RSU | Remote Service Unit |
| RSUP | Reliable SAP Update Protocol |
| RSUP | Reliable State Update Protocol |
| RSV | Remote Support Viewing |
| RT | Retweet |
| RTA | Round Trip Average |
| RTAM | Remote Terminal Access Method |
| RTC | Real Time Connection |
| RTCP | Real-time Transport Control Protocol |
| RTCP | Real-Time Transport Control Protocol (sometimes seen as RTP-Real-Time Transport Protocol) |
| RTED | Robust Tree Edit Distance |
| RTG | Real Time Gambling |
| RTG | Real Traffic Grabber |
| RTI | Real Time Infrastructure |
| RTMP | Real Time Messaging Protocol |
| RTN | Real- Time Network |
| RTN | Recursive Transition Network |
| RTN | Routing Transit Number |