| Abbreviation | Definition |
|---|---|
| RUL | Remaining Useful Life |
| RUR | Repair, Update, and Refurbish |
| RV | Reed Valve |
| RV | Relief Valve |
| RV | Rubber Vagina |
| RVP | Rotary Vacuum Package |
| RVQ | Recreational Vehicle Barbecue |
| RWC | Rear Window Captioning |
| RWG | Rawlings Wire Face Guard |
| RWHP | Rear Wheel HorsePower |
| RWL | Replica White Limestone floor |
| RWP | Resistance Welding Products |
| RXA | Rex-Buckeye Company, Inc. Proprietary Cast Iron Alloy |
| S | Schwinn bicycle |
| S | Simply |
| S/C | Sort Code |
| s/w | shrinkwrapped (plastic) |
| SA | Simulated Annealing |
| SAB | Self Actuating Bell |
| SABIC | Saudi Arabian Basic Industry Corporation |