- Rongta Technology
- Ronix
- Ronson
- Ronstan
- Ront
- Rontan
- Roof Zone
- RoofAquaGuard
- Roofers Choice
- RoofZone
- ROOKS
- Roomba
- RoomDividersNow
- RoomMates
- roomours
- ROOT ASSASSIN
- ROOTS
- Rope
- Roper
- Roper Rhodes
- Roper Whitney
- Ropex
- Ropox
- ROPPE
- Rorke Data
- Rosa Bianca
- ROSAUTO
- Rosch Computer
- Rosco
- Roscoe Medical
- Rose
- ROSE DISPLAYS
- Rose electronic
- Rose electronics
- Rose-electronics
- Rosemount
- Rosemount Analytical
- Rosemount Tank Radar AB
- Rosen
- Rosen Aviation
- ROSEN ENTERTAINMENT
- Rosen Entertainment Systems