English abbreviations from roof to ros
- ROOF (Russian Orphan Opportunity Fund)
- ROOM (Rip Once Output Many)
- ROP (Render Output Pipeline)
- ROPAL (Representation of the People's Amendment Law)
- ROPE (Research Opportunity and Performance Evidence)
- ROPOS (Remotely Operated Platform for Ocean Science)
- ROQ (Rounds Of the Quarter)
- ROR (range only radar)
- RORF ((astrophysics terminology) Radio/Optical Reference Frame, an inertial reference frame based on extragalactic radio sources)
- RORO (Roll- On, Roll- Off)
- RORO OR ro (Roll-On/Roll-Off (ferry))
- ROS (Reactive Oxygen Species)