| RHIS | Rain and Hail Insurance Society
| Others |
| RHIS | Rectitude Home Inspection Services
| Others |
| RHIS | Redlands Horticultural and Improvement Society
| Others |
| RHIS | Regional Hospital Information System
| Others |
| RHIS | Regional Housing Investment Strategy
| Others |
| RHIS | Resistive High Impedance Surface
| Others |
| RHIS | Resistive high impedance surfaces
| Others |
| RHIS | REUTERS Health Information Services
| Others |
| RHIS | River Heights Intermediate School
| Others |
| RHIS | Rocky Hill Intermediate School
| Others |
| RHIS | Routine Health Information Systems
| Others |