| Abbreviation | Definition |
|---|---|
| RWW | Reimer Winter Williamson |
| RWW | Reinisch Wilson Weier |
| RWW | Remote Web Workplace |
| RWW | Returning Warrior Workshop |
| RWW | Returning Warrior Workshops |
| RWW | Rheinisch Westfälische Wasserwerksgesellschaft |
| RWW | Right Wing Watch |
| RWWM | Reykjavik Whale Watching Massacre |
| RWWW | Real World Wide Web |
| RWY | Richard Wee and Yip |
| RWY | Royal Wiltshire Yeomanry |
| RWYB | Run What Ya Brung |
| RX | Reactive X |
| RX | Road Xross |
| RXC | Remote Xin Call |
| RXE | Remote Xin Exchange |
| RXL | Racing Xperimental Liquid |
| RXM | Roxithromycin |
| RXR | Retinoid X Receptors |
| RXR | Rubrobacter Xylanophilus Rhodopsin |