| Abbreviation | Definition |
|---|---|
| ACM | Association for computing machinary |
| ACM | Association for Computing Machineryhence |
| ACM | Association for Computing Machinery—hence |
| ACM | Association of Computing Machinery |
| ACM | Association of Computing Machines |
| ACMA | American Case Management Association |
| ACMA | American Catalog Mailers Association |
| ACMA | American Chinese Medical Association |
| ACMA | American Composites Manufacturers Association |
| ACMA | American Cosmetic Manufacturers Association |
| ACMA | American Cosmetics Manufacturers Association |
| ACMEA | Alameda County Management Employee Association |
| ACMMT | Association Carthage de Malouf et Musique Tunsienne |
| ACMO | Association of Condominium Managers in Ontario |
| ACMO | Association of Condominium Managers of Ontario |
| ACMP | Association for Change Management Professionals |
| ACMP | Association of Comic Magazine Publishers |
| ACMS | Association of Christians in the Mathematical Sciences |
| ACMSA | Academy for Creative Media Student Association |
| ACN | Association of Camp Nursing |