| Abbreviation | Definition |
|---|---|
| MCMS | Mass Communications and Media Studies |
| MCN | Management Consultants News |
| MCN | MotorCycle News |
| MCNA | Manitoba Community Newspapers Association |
| MCP | Managing Conference Proceedings |
| MCPS | Mechanical Copyright Protection Society |
| MCT | Marquette County Tribune |
| MCTV | Multi-Channel Television |
| MCU | Medium Close Up |
| MCW | Morgan County Writers |
| MCZ | Menagerie CyberZine |
| MD | Madden Discussions |
| MD | McCleod's Daughters |
| MD | Microphone Doctor |
| MD | Mommy Dearest |
| MD | Monolog Doctor |
| MD | Multi-Definition |
| MD | Multiple Dissemination |
| MDDM | Malcolm Dent Digital Media |
| MDE | Mastery Delivery And Excellence |