| Abbreviation | Definition |
|---|---|
| RR | Reinassance Ridge |
| RR | Rejection Region |
| RR | Relative risks |
| RR | Remittance Regulations |
| RR | Renderzone Radiosity |
| RR | Repeat Reminder |
| RR | Request for reexamination |
| RR | Request Return |
| RR | Required Reserves |
| RR | Reserve Ratio |
| RR | Resistance Roll |
| RR | Resonance Raman |
| RR | retain and recall |
| RR | Reverse Rotation |
| RR | Riff Repeater |
| RR | Road Racer |
| RR | Roundup Ready |
| RR | Rreceive Ready |
| RR | Rubber Rand |
| RR | Ruggedness And Reliability |