| Acronym | Definition |
|---|
| OMMS➣Organisation Mondiale du Mouvement Scout (French: World Organization of the Scout Movement) |
| OMMS➣Organización Mundial del Movimiento Scout (Spanish; World Organization of the Scout Movement) |
| OMMS➣Ordnance Mechanical Maintenance School (Aberdeen Proving Ground, Maryland) |
| OMMS➣Orchard Mesa Middle School (Grand Junction, CO) |
| OMMS➣Oak Meadow Montessori School |
| OMMS➣Organizational Maintenance Management Subsystem |