| Abbreviation | Definition |
|---|---|
| MCP | Media and Communications Processor |
| MCP | Modern Curriculum Press |
| MD | Mini-Disk |
| MDEP | Multimedia Diabetes Education Program |
| MDIL | Machine Dependent Intermediate Language |
| MDN | Mainichi Daily News |
| MDN | Midland Daily News |
| MDND | Medical Device News Desk |
| MDX | Multi-Dimensional Expressions |
| MEAN | Midi Electronics Audio Noise |
| MEG | Music, Entertainment, and Games |
| MENA | Middle East News Agency |
| MENA | Mmiddle East News Agency |
| MER | Media Efficiency Ratio |
| METNEWS | Metropolitan News-Enterprise |
| MF | Medium Frequency |
| MFJ | Media Film and Journalism |
| MFN | Metal Finishing News |
| MFU | Mobile Film Unit |
| MGB | Mc Gowan Book Company |