| Abbreviation | Definition |
|---|---|
| AACS | Advanced Automotive Consulting Services |
| ABCG | A B Consulting Group |
| ABCG | Active Brains Consulting Group |
| ABCG | Albert Battaglin Consulting Group |
| ABCG | Ashton Brand Consulting Group |
| ACAL | Alpex Consulting Africa Limited |
| ACBU | Andersen Consulting Business Unit |
| ACCI | Automotive Containment and Consulting Inc |
| ACCS | Ashford Computer Consulting Service |
| ACCTS | Arab Center for Consulting and Training Services |
| ACCTS | Arab Center for Consulting Training Services |
| ACEE | Association of Consulting Electrical Engineers |
| ACEI | Associated Consulting Engineering Incorporated |
| ACEM | Association of Consulting Engineers Malaysia |
| ACEQ | Association of Consulting Engineers of Quebec |
| ACG | Adams Consulting Group |
| ACG | Analyst Consulting Group |
| ACG | Appalachian Consulting Group |
| ACGI | Application Consulting Group Inc |
| ACLF | Advanced to Consultant level Framework |