| Abbreviation | Definition |
|---|---|
| ACCB | Aylesbury Community Concert Band |
| ACCF | Animal Crossing City Folk |
| ACCO | Anglo Chinese Chinese Orchestra |
| ACDA | American Choral Directors Association |
| ACDC | Alice Clancy Doris And Carol |
| ACDC | Alternating Current / Direct Current |
| ACDC | Armagh City And District Council |
| ACE | Anonymous Confederate Ensemble |
| ACFM | American Center for Folk Music |
| ACJO | Alan Chan Jazz Orchestra |
| ACJO | Americana Classic Jazz Orchestra |
| ACL | American Classical League |
| ACL | Austin City Limits |
| ACM | Academy of Country Music |
| ACM | Access Contemporary Music |
| ACM | Acdemy of Contemporary Music |
| ACM | American Country Music |
| ACMA | Academy of Country Music Awards |
| ACMA | Australasian Computer Music Association |
| ACMC | Austin Chamber Music Center |