| Abbreviation | Definition |
|---|---|
| AC | Advisory Committee |
| AC | Advisory Council |
| ACA | A Cut Above |
| ACAC | Agree, Confirm, Answer, and Close |
| ACAG | Australasian Council of Auditors General |
| ACAS | Advisory Conciliation Arbitration Service |
| ACAS | Advisory, Conciliation, and Arbitration Service |
| ACBJ | American City Business Journals, Inc. |
| ACC | Accident Compensation Corporation |
| ACC | Administrative Committee for Coordination |
| ACCE | American Chamber of Commerce Estonia |
| ACCE | American Chamber Of Commerce Executives |
| ACCPA | Australasian Center for Corporate Public Affairs |
| ACCPADD | ACCount Pseudonym ADDress |
| ACCPC | American Credit Card Procesing Corp |
| ACCRA | American Chamber of Commerce Research Association |
| ACCS | Automatic Customer Care Service |
| ACCW | Association of California Commission for Women |
| ACD | Accredited Construction Details |
| ACD | Automatic Cancellation Date |