| Abbreviation | Definition |
|---|---|
| ROH | Royal Orchid Holidays |
| ROH | RPC over HTTPS |
| ROH | runs of homozygosity |
| ROH | The Radius Of Hollow |
| ROHA | Resource Optimized High Availability |
| ROHM | Register of Health and Merit |
| ROHM | Removal Of Heavy Metals |
| ROHM | Royal Opera House Muscat |
| ROHO | Remote Office Home Office |
| ROHO | Ride On Honorable Ones |
| ROHR | Rate Of Heat Release |
| ROHS | Restrictions of Hazardous Substances |
| ROI | Office Interiors |
| ROI | R Optimization Infrastructure |
| ROI | Rate Of Improvements |
| ROI | Raving On Israel |
| ROI | Relevance Originality Impact |
| ROI | Return Of Ice |
| ROI | Return On Integrity |
| ROII | Rate Of Occupational Injuries And Illnesses |