| Abbreviation | Definition |
|---|---|
| ACSG | Association Canadienne des Sciences Gomatiques |
| ACSG | Canadian Institute of Geomatics |
| ACSIS | African Civil Society on the Information Society |
| ACSIS | American Council for the Study of Islamic Societies |
| ACSMAC | Association Canadienne pour les Structures et Matériaux Composites |
| ACSMAC | Association Canadienne pour les Structures et Matriaux Composites |
| ACSMAC | Canadian Association for Composite Structures and Materials |
| ACSP | Association Canadienne de Sant Publique |
| ACSP | Association Canadienne de Santé Publique |
| ACSP | Association Canadienne de Science Politique |
| ACSP | Canadian Political Science Association |
| ACSP | Canadian Public Health Association |
| ACSS | Austin Cactus and Succulent Society |
| ACSSC | American Cetacean Society Student Coalition |
| ACSSC | Asian Cinema Studies Society Conference |
| ACSSP | Australia Civil Society Support Program |
| ACSUS | Association for Canadian Studies in the US |
| ACSZ | Agriculture and Commercial Society of Zambia |
| ACT | American College of Toxicology |
| ACT | Association Canadienne de Traductologie |