| Abbreviation | Definition |
|---|---|
| ACST | Aero Club of Southern Tasmania |
| ACTC | Almaden Cycle Touring Club |
| ACUC | Association of College and University Clubs |
| ACVT | Airsoft Club at Virginia Tech |
| ACVT | Airsoft Club Virginia Tech |
| ACWS | Aquatic Club of the West Shore |
| ACZ | Aero Club Zwickau |
| ADAC | Allgemeine Deutsche Automobil Club |
| ADBC | Annapolis Dragon Boat Club |
| ADBC | Arlington Duplicate Bridge Club |
| ADC | Art Directors Club |
| ADCA | Antwerp Delta Club Albatros |
| ADCC | Abu Dhabi Combat Club |
| ADCC | Advanced Degree Consulting Club |
| ADCC | Australian Defence Cycling club |
| ADCD | Art Directors Club Denver |
| ADCH | Art Directors Club of Houston |
| ADCP | Art Directors' Club of Philadelphia |
| ADCR | Art Directors Club Russia |
| ADCT | Art Directors Club of Tulsa |