OM
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| OM | Operational Mid DSC Or MDM | - | Organizations |
| OM | Optical Master | - | Organizations |
| OM | Orbital Maneuvering Engine | - | Organizations |
| OM | Orbiter Main Engine | - | Organizations |
| OM | Outer Marker (ILS) | - | Organizations |
| OM | RS Operations And Maintenance Requirements Specification | - | Organizations |
| OM | Old Man | - | ISO Country Codes |
| OM | Oman (ISO 3166 Digram) | - | Astronomy |
| OM | Oromo Language (ISO 639-1 Code) | - | Astronomy |
| OM | Office Of Meteorology | - | Business and Finance |