R/O
| Acronym | Definition |
|---|---|
| R/O | Role Of (casting/acting) |
| R/O | Removal Of |
| R/O | Range/Oven (appliance) |
| R/O | Read Only |
| R/O | Rinse Off |
| R/O | Reverse Osmosis |
| R/O | Registered Office (UK) |
| R/O | Resident Of |
| R/O | Relationship Officer |
| R/O | Repair Order |
| R/O | Rule Out |
| R/O | Required/Optional |
| R/O | Request Off |
| R/O | Risk Opportunity |
| R/O | Radio Operator |
| R/O | Receive Only |
| R/O | Rough Opening |
| R/O | Reporting Officer |
| R/O | Routing Order (freight) |