| Abbreviation | Definition |
|---|---|
| MM | Mille Miglia auto race |
| MM | Monster Muscle |
| MMA | Marble Mans Army |
| MMA | Mixed Martial Arts |
| MMA | Modern Martial Arts |
| MMA | Monster Mudding Association |
| MMACC | Mixed Martial Arts Conditioning Coach |
| MMDS | Malakoff Malaysian Duathlon Series |
| MMFT | Monthly Mecha Fighting Tournament |
| MMG | Massively Multiplayer Game |
| MML | Master Muscle List |
| MML | Mega Man Legends |
| MML | Murder Mystery League |
| MMM | Midtown Madness Masters |
| MMNC | Mid Mountains Netball Club |
| MMOD | March Madness On Demand |
| MMOPG | Massively Multi-player Online Persistent Game |
| MMORPG | Massively Multi-player On-line Role Playing Game |
| MMP | Massive Multi-Player |
| MMP | Miller Motorsports Park |