| Abbreviation | Definition |
|---|---|
| ACTC | A Conscientious Translation Company |
| ACTI | Advanced Cleanup Technologies Inc |
| ACTI | Angeles Composite Technologies Inc |
| ACTION | Activists Center for Training In Organizing and Networking |
| ACTS | Action Creativity Technology Service |
| ACTSI | Aviation Concepts Technical Services Inc |
| ACTT | Anderson Consulting, Training, and Testing |
| ACUVUE | Accurate view |
| ACVL | Americas Cup Village, Ltd. |
| ACVL | Association of Cinema and Video Laboratories |
| ACVL | Association of Consumer Vehicle Lessors |
| ACVR | Automotive Cluster, Vienna Region |
| ACW | American Creosote Works |
| ACWC | Association of Certified Wedding Consultants |
| ACWG | American Carpet Wholesale Group |
| ACWG | American Carpet Wholesalers of Georgia, Inc. |
| ACWI | American Chain of Warehouses, Inc. |
| ACWP | Archusa Creek Water Park |
| ACX | Active Control eXperts |
| AD | Authorized Dealer |