| Abbreviation | Definition |
|---|---|
| RMS | Risk Management System |
| RMU | Resource Mobilization Unit |
| RMW | Regulated Medical Waste |
| RMZ | Risk Management Zone |
| RNF | Return Notification Form |
| RNL | Receipt Notification Letter |
| RNM | Reserve Not Met |
| RNO | Real National Output |
| RNR | Repair and Restore |
| RNS | Regulatory News Service |
| RNT | Rent |
| RO | Research Organization |
| RO | Retail Outlet |
| ROAR | Respect, Organization, And Responsibility |
| ROAR | Rise Organize And Rebuild |
| ROARS | Rooms, Operations, And Related Services |
| ROAS | Return On Advertising Spent |
| ROC | Regional Oversight Committee |
| ROC | Retail Only Customer |
| ROC | Rolling Outcome Chart |