| Abbreviation | Definition |
|---|---|
| RHG | Riot Hospitality Group |
| RHG | Rock Hard Gladiator |
| RHG | Rock Hard Gladiotor |
| RHG | Rowling Hall Garage |
| RHGH | Rafael Hevia García Huidobro |
| RHGH | Recombinant Human Growth Hormone |
| RHGS | Rocky Horror Glee Show |
| RHH | Real Housewives of Hopkinton |
| RHH | Riemann Hurwitz Hasse |
| RHI | Range Height Indicator |
| RHI | Rat Hippocampal Interneuron |
| RHI | Reactive Hyperemia Index |
| RHI | Real Hectic Industry |
| RHI | Really Happy Industry |
| RHI | Red Hook Initiative |
| RHI | Registered Home Inspector |
| RHI | Relative Humidity Indicator |
| RHI | Relativistic Heavy Ion |
| RHI | Renewable Heat Incentive |
| RHI | Renewable Heating Incentive |