| CSAR | Cambridge Society for the Application of Research 
| Others |
| CSAR | Canine Search and Recovery
| Others |
| CSAR | Center for Simulation of Advanced Rockets
| Others |
| CSAR | Center for Space and Atmospheric Research
| Others |
| CSAR | Center for Spatial Analysis and Research
| Others |
| CSAR | Center for Substance Abuse Research
| Others |
| CSAR | Center for the Simulation of Advanced Rockets
| Others |
| CSAR | Center for the Study of Addiction and Recovery
| Others |
| CSAR | Central South African Railways
| Others |
| CSAR | Centralized System for Analysis Reporting
| Others |
| CSAR | Centre for Sustainable Aquatic Research
| Others |
| CSAR | Centre for the Studies of Asphyxia and Resuscitation
| Others |
| CSAR | Centro Stile Alfa Romeo
| Others |
| CSAR | Channel System Address Register
| Others |
| CSAR | ChIP seq Analysis in R
| Others |
| CSAR | Cisco Cell Segmentation and Reassembly
| Others |
| CSAR | City Security Assessment Ratings
| Others |
| CSAR | Coalition for Sustainable Automotive Regulation
| Others |
| CSAR | Combat Search And Rescue
| Others |
| CSAR | Community Structure Activity Resource
| Others |
| CSAR | Complex Spareable Assembly Requirements model
| Others |
| CSAR | Computer Services for Academic Research
| Others |
| CSAR | Computerized Structural Analysis and Research
| Others |
| CSAR | Cumulative Standardized Abnormal Returns
| Others |