RWA
- Race Walking Association
- Reaction wheel
- Real-World Asset
- Research Works Act
- Resident welfare association
- Right-wing authoritarian personality
- Risk-weighted asset
- Romance Writers of America
- Rot Weiss Ahlen
- Rotating-wave approximation
- Routing and wavelength assignment
- Royal West Academy
- Royal West of England Academy
- Rwanda
- Ryan White CARE Act
- Western Armenia Government in Exile