| Abbreviation | Definition |
|---|---|
| CLS | Crack Loving Singer |
| CLWM | Changing Lives With Music |
| CM | Christian Music |
| Cm | C-minor |
| CM | Country Music |
| CMA | Chamber Music America |
| CMAA | Church Music Association of America |
| CMAA | Country Music Association of Australia |
| CMAA | Country Music Awards of Australia |
| CMAC | Country Music Association of Calgary |
| CMAI | Carnatic Music Association of Indianapolis |
| CMAO | Country Music Association of Ontario |
| CMAS | Champlian Music Appreciation Society |
| CMB | Cavalier Marching Band |
| CMB | Christian Music Broadcasters |
| CMB | Color Me Badd |
| CMC | California Music Channel |
| CMC | Computer Music Center |
| CMC | Contemporary Music Center |
| CMC | Cult Metal Classic |