| Abbreviation | Definition |
|---|---|
| MP | Mile Point |
| MP | Movement Penalty |
| MP | Multi Player |
| MPE | Mountaineering Performance Evolution |
| MPGA | Minnesota Public Golf Association |
| MPIAA | Mount Pleasant Independant Athletic Association |
| MPIAA | Mountain and Plains Intercollegiate Athletic Association |
| MPL | Madden Pirate League |
| MPL | Minnesota Paintball League |
| MPOS | Mark Patrick On Sports |
| MPQ | MultiPlayer Quake |
| MPS | Melges Performance Sailboat |
| MPS | More Public Snorkling |
| MPS | Multi Players Supported |
| MQH | Magnolia Quarter Horses |
| MQHA | Missouri Quarter Horse Association |
| MR | Medium Runner |
| MR | Medley Relay |
| MR | Middle Relief |
| MR | Mitsubishi Racing |