| Acronym | Definition |
|---|
| RMHS | Remote Message Handling Service |
| RMHS | Rocky Mountain High School (Fort Collins, CO) |
| RMHS | Richard Montgomery High School (Rockville, Maryland) |
| RMHS | Rolling Meadows High School (Illinois) |
| RMHS | Reading Memorial High School (Massachusetts) |
| RMHS | Red Mountain High School (Arizona) |
| RMHS | Rocky Mount High School (Rocky Mount, NC) |
| RMHS | Roy Miller High School (Corpus Christi, TX) |
| RMHS | Rio Mesa High School (Oxnard, CA) |
| RMHS | Rocky Mountain Highland Supply |
| RMHS | Railway Mixed High School (India) |
| RMHS | Remote Magnetic Heading System |