| Abbreviation | Definition |
|---|---|
| MSN | Mostly Stupid News |
| MSNBC | Mini Sota News By Creeps |
| MTCN | Michael The Comic Nerd |
| MTM | Mary Tyler Moore Productions |
| MTP | Meet the Press |
| MVK | Music Video Keyboard |
| MWDN | MetroWest Daily News |
| MWFB | Mid West Family Broadcasting |
| MWN | Morocco World News |
| MWT | Modern Western Theology |
| MWW | MicroWave World |
| NAB | National Association of Broadcasters |
| NAD | Noise Adding Device |
| NAH | Nutrition Action Healthletter |
| NAI | Network Advertising Initiative |
| NAIS | Nazareth Area Intermediate School |
| NAN | News Agency of Nigeria |
| NANL | National Association of Newspaper Librarians |
| NBBN | Nothing But Bad News |
| NBBN | Nurses Breaking Bad News |