| Abbreviation | Definition |
|---|---|
| RH | Right Hemisphere |
| RH | Robert Hassler |
| RH | Roger Hines |
| RH | Ron Howard |
| RH | Root of Hedge |
| RH | Rotate Hand |
| RH | Rowland Hall |
| RH | Rumex hymenosepalus |
| RHA | Reid and Heath Acoustics |
| RHA | Residence Halls |
| RHA | Residence Halls Association |
| RHA | Rice Husk Ash |
| RHA | Richard Heath and Associates |
| RHA | Rolled homogeneous armour |
| RHA | Roller Hockey Alliance |
| RHABDO | Rhabdomyolysis |
| RHAD | Registered Hearing Aid Dispenser |
| RHANDEL | R / HANDEL |
| RHAP | Red Hook Art Project |
| RHAP | Residence Hall and Apartment Patrol |