| Abbreviation | Definition |
|---|---|
| RHMS | Ranchland Hills Middle School |
| RHMS | Richard Hardy Memorial School |
| RHMS | Richmond Heights Middle School |
| RHMS | Richmond Hill Middle School |
| RHMS | Rocky Heights Middle School |
| RHMS | Rocky Hill Middle School |
| RHMS | Rolling Hill Middle School |
| RHMS | Rolling Hills Middle School |
| RHMS | Rolling Hills Mud Sharks |
| RHMS | Rose Hill Middle School |
| RHMS | Round Head Machine Screw |
| RHN | R H N Registered Holistic Nutritionist |
| RHN | Regence Health Network |
| RHN | Regional Hub Nodes |
| RHN | Regions for Health Network |
| RHN | Registered Holistic Nutritionist |
| RHN | Reid Hurst Nagy |
| RHN | Resident Help Network |
| RHN | Right Hand Needle |
| RHNT | Richmond Hill Natural Therapies |