| Abkürzung | Langform |
| RWAL | Rear Wheel AntiLock brake system |
| RWB | Responsive Workbench |
| RWD | Rear-Wheel Drive |
| RWD | Rear Wheel Drive |
| RWDR | RadialWellenDichtRing |
| RWG | Regelweggeber |
| RWI | Reset Window Indicator |
| RWM | Read Write Memory |
| RWP | RIP While Printing |
| RWS | Rufweiterschaltung |
| RWT | Random Walk Theory |
| RWTH | Rheinisch-Westfälische Technische Hochschule, Aachen |
| RX | Receive Data |
| RX | Receiver |
| RXC | Receive Clock |
| RXD | Received Data |
| Rüla | Rücklastschrift |
| RZ | Return to Zero |
| RZ | Rechenzentrum |