RW
- .rw
- Kinyarwanda
- RW Cephei
- RW Cygni
- RW Leonis Minoris
- RW Ursae Minoris
- Racewalking
- Random walk
- Reaction wheel
- Read–write memory
- Real world (disambiguation)
- Remote work
- RenderWare
- Republic Airlines
- Respondent
- Rewritable media
- Right-wing politics
- Road Wild
- Robbie Williams
- Robertson–Walker metric
- Robin Wight
- Robin Williams
- Robot Wars (disambiguation)
- Roger Waters
- Rosewood
- Royal Wings
- Rukun warga
- Rwanda
- The Real World (TV series)
- Winger (sports)