| Abbreviation | Definition |
|---|---|
| IMEA | International Music Entertainment Awards |
| IMEM | Indiana Music and Entertainment Museum |
| IMFC | International Music Festival and Competition |
| IMHBL | It Must Have Been Love |
| IMIM | Institute of Music in Medicine |
| IML | Institute for Music Leadership |
| IMMA | International Menuhin Music Academy |
| IMMC | International Musicians Medicine Committee |
| IMMS | International Military Music Society |
| IMNF | Institute for Music and Neurological Functioning |
| IMOG | Ingatestone Musical and Operetta Group |
| IMOO | Improvising Musicians of Ottawa Outaouais |
| IMOO | Improvising Musicians of Ottawa/Outaouais |
| IMP | Improvisational Music Program |
| IMPA | Instrumental Music Parents Association |
| IMPACT | Inspiring Music and Praise Acclaiming Christ Together |
| IMPF | Independent Music Publishing Forum |
| IMPS | Institute for Musicianship and Public Service |
| IMR | Indie Music Reviewer |
| IMR | International Music Registry |