| CSA(S) | Childrens' Savings Account(S) 
| Others |
| CSAS | Canadian Science Advisory Secretariat
| Others |
| CSAS | Canadian Society of Animal Science
| Others |
| CSAS | Canadian Special Air Service
| Others |
| CSAS | Car Sharing Association of Singapore
| Others |
| CSAS | Career Standards and Assessment Services
| Others |
| CSAS | Center for Snow and Avalanche Studies
| Others |
| CSAS | Center for South Asian Studies
| Others |
| CSAS | Center for Student Academic Success
| Others |
| CSAS | Center for Student Academic Support
| Others |
| CSAS | Center for Student Achievement Solutions
| Others |
| CSAS | Center for the Study of the American South
| Others |
| CSAS | Central Sleep Apnea Syndrome
| Others |
| CSAS | Central Sleep Apnoea Syndrome
| Others |
| CSAS | Central States Anthropological Society
| Others |
| CSAS | Centre of South Asian Studies
| Others |
| CSAS | Chattanooga School for the Arts and Sciences
| Others |
| CSAS | Classroom Strategy Assessment Scale
| Others |
| CSAS | Climate Science Awareness and Solutions
| Others |
| CSAS | Coal Smoke Abatement Society
| Others |
| CSAS | Colorado Springs Astronomical Society
| Others |
| CSAS | Command and Stability Augmentation System
| Others |
| CSAS | Command Stability Augmentation System
| Others |
| CSAS | Commissioning Support Appraisals Service
| Others |
| CSAS | Committee on Standards and Academic Standing
| Others |
| CSAS | Commodity and Services Acquisition Service
| Others |
| CSAS | Community Safety Accreditation Scheme
| Others |
| CSAS | Community Supported Agriculture As
| Others |
| CSAS | Computer Science and Applied Statistics
| Others |
| CSAS | Computerized Status Accounting System
| Others |
| CSAS | Control Stability Augmentation System
| Others |
| CSAS | Core Science Analytics Synthesis
| Others |
| CSAS | Cougar Scholarship Awarding System
| Others |
| CSAS | Criticality Safety Analysis Sequence
| Others |
| CSAS | Cultural Stress Anxiety Syndrome
| Others |
| CSAS | Customer Satisfaction Analysis System
| Others |