| Abbreviation | Definition |
|---|---|
| ACI | Automation Components Inc |
| ACIA | American Construction Inspectors Association |
| ACIC | Association Casualty Insurance Company |
| ACIC | Association of California Insurance Companies |
| ACIC | Atlas Crest Investment Corp |
| ACID | ANSI Creators In Demand |
| ACII | Advanced Computer Innovations Inc |
| ACIL | Cotton Industries Ltd |
| ACIS | Allianz Cornhill Information Systems |
| ACJ | Airbus Corporate Jetliner |
| ACJ | Airbus Corporate Jets |
| ACJL | Auto Craft Japan Ltd |
| ACL | Automotive Components Limited |
| ACLA | Azam Chaudhry Law Associates |
| ACLC | Australian Company Law Cases |
| ACLF | Advantage Community Loan Fund |
| ACLU | American Crybabies League Union |
| ACLU | Atheists Communist And Lawyers United |
| ACM | Agence Carte Mobile |
| ACM | American Computing Machinery |