| Acronym | Definition |
|---|
| OMSD➣Ontario-Montclair School District (Ontario, CA) |
| OMSD➣Ozark Mountain School District (Arkansas) |
| OMSD➣Operations and Mission Support Directorate |
| OMSD➣Officier Marinestoomvaartdienst (Dutch) |
| OMSD➣One Mass Scale Dominance (physics) |
| OMSD➣Operational Maneuver from Strategic Distances (US Navy) |