ONMS
| Acronym | Definition |
|---|---|
| ONMS | Optical Network Management System |
| ONMS | Office of National Marine Sanctuaries (Silver Spring, MD) |
| ONMS | Orbiter Neutral Mass Spectrometer (US NASA) |
| ONMS | Open Network Management System |
| ONMS | Optical Network Management System (Astal Point) |
| ONMS | Opieka Nad Magicznymi Stworzeniami (Polish: Care of Magical Creatures; Harry Potter) |