| Abbreviation | Definition |
|---|---|
| ROH | Rear Overhang |
| ROIV | Registrar Of Imported Vehicles |
| ROM | Read Only Meaning |
| RON | Relative Octane Number |
| RON | Research Octane Number |
| ROPS | Roll Over Protection System |
| ROPS | Roll Over Protective Structure |
| ROR | Rules Of the Road |
| RO-RO | Role On Role Off |
| ROSS | Roadwatch One Stop Service |
| ROT | Runway Occupancy Time |
| ROTC | Ran Over The Cat |
| ROTV | Remotely Operated Towed Vehicle |
| ROUTE | Rethinking Our Urban Transportation Environment |
| ROV | Remote Operated Vehicle |
| ROV | Remote Operational Vehicle |
| ROV | Remotely Operated Vehicles |
| ROV | Remotely Operated Vessel |
| ROVER | Remotely Operated Vehicle for Exploration and Reconnaissance |
| ROVER | Remotely Operated Vehicles for Emergency Response |