| CACS | Calcenter for Atmospheric Chemistry Studies 
| Others |
| CACS | California Academy of Cosmetic Surgery
| Others |
| CACS | California Association of College Stores
| Others |
| CACS | Canadian Active Control System
| Others |
| CACS | Canadian Association For Curriculum Studies
| Others |
| CACS | Canadian Association of Computer Science
| Others |
| CACS | Capital Area Community Services
| Others |
| CACS | Celiac Axis Compression Syndrome
| Others |
| CACS | Center for Advanced Computer Studies
| Others |
| CACS | Center for Advising and Career Services
| Others |
| CACS | Center for Alaskan Coastal Studies
| Others |
| CACS | Central Air Conditioning System
| Others |
| CACS | Centre for Access and Communication Studies
| Others |
| CACS | Centre for Advanced Construction Studies
| Others |
| CACS | Certificate of Advanced Counseling Studies
| Others |
| CACS | Chancellor's Advisory Committee on Sustainability
| Others |
| CACS | Chinese American Chemical Society
| Others |
| CACS | Chinese American Council of Sacramento
| Others |
| CACS | Chinese-American Chemical Society
| Others |
| CACS | Chippewa Area Catholic Schools
| Others |
| CACS | Citizens Against Common Sense
| Others |
| CACS | Collaboratory for Advanced Computing and Simulations
| Others |
| CACS | Comprehensive Automobile Control System
| Others |
| CACS | Computer Assisted Coding System
| Others |
| CACS | Computer Assisted Collection System
| Others |
| CACS | Computer Audit Control and Security
| Others |
| CACS | Computer Audit, Control, and Security Conference
| Others |
| CACS | Consolidated Audit And Compliance System
| Others |
| CACS | Coronary Artery Calcium Score
| Others |
| CACS | Coronary Artery Calcium Scoring
| Others |
| CACS | Creative Arts Charter School
| Others |
| CACS | Custom Applications and Consulting Services
| Others |
| CACS | Customer Administration Communication System
| Others |