| Abbreviation | Definition |
|---|---|
| MTV | Music's Top Voice |
| MTX | The Mr. T Experience |
| MUFO | MUsikskolernes FOrlag |
| MUGC | Marquette University Gospel Choir |
| MUGP | MUsic GrouP |
| MUI | Musicians' Union of Ireland |
| MUJ | Musicians Union of Japan |
| MUM | Manchester Underground Music |
| MUMB | Miami University Marching Band |
| MUNA | Music Unity Nature Art |
| MUNY | Music Under New York |
| MUP | Music Publication |
| MUSA | Music Undergraduate Students Association |
| MUSE | Music Unity and Social Expansion |
| MUSE | Music Unity Sports Entertainment |
| MUSE | Musicians United To Sustain The Environment |
| MUSIC | Many Unusual Sound In Cooperation |
| MUSIC | musical |
| MUSICAL | Musicians |
| MUSICOLOGO | Musicologia |