| Abbreviation | Definition |
|---|---|
| MMP | Mixed Membered Proportional |
| MMQB | Monday Morning Quarterback |
| MMS | Modsports Mick Series |
| MMSC | Metropolitan Milwaukee Ski Council |
| MMSHoF | Michigan Motor Sports Hall of Fame |
| MMTC | Mid- Michigan Track Club |
| MMTR | Mountain Masochist Trail Run |
| MMW | Mickey Mclain Wrestling |
| MNBA | Mississauga North Baseball Association |
| MNC | Michigan: National Champions |
| MNC | Mythical National College football |
| MNF | Monday Night Football |
| MNG | More New Games |
| MNM | Monday Night Matrix |
| MNST | Mexican National Soccer Team |
| MNT | Men's National Team |
| MNT | Monday Night Tennis |
| MNYSC | Metropolitan New York Ski Council |
| MOAC | Mid-Ohio Athletic Conference |
| MOC | Master Of Concentration |