| Abbreviation | Definition |
|---|---|
| ACSG | Accountable Care Solutions Group |
| ACSG | ASEAN Civil Service Games |
| ACSG | Assessment Centre Study Group |
| ACSG | Associazione Culturale Studi Grafici |
| ACSG | Atlanta Coffee Supply Group |
| ACSG | Atlantic Coast S Gaugers |
| ACSGC | Audubon Cooperative Sanctuary for Golf Courses |
| ACSH | Annapurna Center for Self Healing |
| ACSI | Abstract Communication Service Interface |
| ACSI | Accelerating Change for Social Inclusion |
| ACSI | American Consumer Satisfaction Index |
| ACSI | American Customer Satisfaction |
| ACSI | Association of Christian School International |
| ACSI | Association of Christian Schools |
| ACSI | Association of Christian Schools International's |
| ACSI | Automated Collection Services Inc |
| ACSK | Amalfi Coast Sea Kayak |
| ACSL | acyl CoA synthetase long |
| ACSL | Acyl-CoA Synthetase Long |
| ACSL | American Corporate Sedan and Limousine |