| Abbreviation | Definition |
|---|---|
| AHM | At Home Musician |
| AHMF | American Heritage Music Festival |
| AHS | American Harp Society |
| AICM | Australian Institute of Country Music |
| AIM | Australian Institute of Music |
| AIME | Audio Image Musical Experience |
| AIMES | Arts Innovation Music Education Sport |
| AIMIT | Associate of the Institute of Musical Instrument Technology |
| AIMP | Association of Independent Music Publishers |
| AIMS | Association of Irish Musical Societies |
| AIR | Air Radio System |
| AIR | Associated Independent Recording |
| AIS | Adventures In Success |
| AITM | Association of Irish Traditional Musicians |
| AIUME | Adapting Indian Universals in Music Education |
| AJBA | All-Japan Band Association |
| AJFA | And Justice For All |
| AJHF | Alabama Jazz Hall of Fame |
| AJHF | Arkansas Jazz Hall of Fame |
| AJM | American Jazz Museum |