| Abbreviation | Definition |
|---|---|
| ACBC | Asphalt Concrete Base Course |
| ACBS | Asian Confederation of Billiard Sports |
| ACBS | Auckland Confederation of Billiard Sports |
| ACBSP | American Chiropractic Board of Sports Physicians |
| ACC | Adaptive Cruise Control |
| ACC | Air Canada Centre (Toronto, Ontario) |
| ACC | All Canes Conference |
| ACC | American Cribbage Congress |
| ACC | Asian Cricket Championship |
| ACC | Atlantic Coast Championships |
| ACCS | American Challenge Cup Series |
| ACDC | America's Cup Derived Contest |
| ACDC | Association Canadienne De Danse Country |
| ACE | Achievement Of Clubbing Excellence |
| ACE | Adventure Camaraderie Entertainment |
| ACE | Agility, Challenge, and Expertise |
| ACE | American Cheer Express |
| ACE | Annual Catch Entitlement |
| ACE | Athlete Career and Education |
| ACE | Athletics Career Education |