| Abbreviation | Definition |
|---|---|
| MMG | Maybach Music Group |
| MMG | Melon Music Group |
| MMG | Mix Master General |
| MMG | Mixtape Music Group |
| MMG | Mosley Music Group |
| MMGR | Musical Merry Go Round |
| MMHP | Master of Music in Historical Performance |
| MMIC | Maori Music Industry Coalition |
| MMIX | Mylo Michael Ian Xyloto |
| MMJ | Music Maker Jam |
| MMJ | My Morning Jacket |
| MMM | Mode Maksla Muzika festival |
| MMM | Modern Music Masters |
| MMM | Musicians Making Mistakes |
| MMMB | March Madness Marching Band |
| MMMF | McDowell Mountain Music Festival |
| MMMF | Mehli Mehta Music Foundation |
| MMMF | Merritt Mountain Music Festival |
| MMMF | Music Moves Mountains Foundation |
| MMMJ | Magic Mushroom Music Jam |