| Abbreviation | Definition |
|---|---|
| ROS | Remote Operations Service |
| ROSE | Remote Operations Service Element |
| ROW | Rest Of World |
| RPE-LPC | Regular Pulse Excited - Linear Predictive Coder |
| RPE-LTP | Regular Pulse Excited - Long Term Prediction |
| RPO | Railway Post Office |
| RPS | Really Poor Service |
| RPT | Reply Paid Telegram |
| RPV | Resource Property Value |
| RR | Receiver Ready |
| RRF | Receive Frequency Reject Filter |
| RRLD | Radio Regulations and Licensing Department (National Telecommunications Commission; Philippines) |
| RRN | Routing Recording Number |
| RRO | Regulated Rate Option |
| RSL | Remote Serial Link |
| RSL | Request and Status Links |
| RSL | Restricted Service License |
| RSN | Readable Serial Number |
| RSRQ | Reference Signal Received Quality |
| RSS | Radio Service Software |