| Abbreviation | Definition |
|---|---|
| OMC | Oakland Mediation Center |
| OMC | OverDrive Media Console |
| OMD | Open Mathematical Documents |
| OMD | Optimum Media Direction |
| OMDC | Ontario Media Development Corporation |
| OME | Office of Mediated Education |
| OME | Otitis Media with Effusion |
| OMF | One Must Fall |
| OMFG | Original Media for Gamers |
| OMG | Online Media Generation |
| OMGB | Oriented Media Group BHD |
| OMMA | Online Media Marketing and Advertising |
| OMN | Oracle Media Network |
| OMN | Oromia Media Network |
| OMP | Osaka Media Port |
| OMQ | One Man's Quest |
| OMS | On My Side |
| OMS | On My Stereo |
| OMSA | Online Media Standards Authority |
| OMSP | Open Media Streaming Project |