RMMS
| Acronym | Definition |
|---|---|
| RMMS | Rocky Mountain Mystery School (Tokyo, Japan) |
| RMMS | Rocky Mountain Map Society (est. 1991; Denver, CO) |
| RMMS | Royal Mail Motor Ship (UK) |
| RMMS | Routine Maintenance Management System |
| RMMS | Rocky Mountain Middle School (various locations) |
| RMMS | Remote Maintenance Monitoring System |
| RMMS | Rural/Metro Medical Services |
| RMMS | Randy Macho Man Savage (pro wrestler) |