| Abbreviation | Definition |
|---|---|
| CSLI | Corps Saint Lazarus International |
| CSM | Central Sugar Milling |
| CSMC | Central Semiconductor Manufacturing Corporation |
| CSMDC | Chhattisgarh State Mining Development Corporation |
| CSN | Companhia Siderurgica National |
| CSOP | Company Share Option Plans |
| CSOS | Central States Orthopedic Specialists |
| CSP | Competitive Sealed Proposal |
| CSP | Concepcion, Senoren, and Pichay |
| CSPI | ConocoPhillips Specialty Products, Inc. |
| CSPL | Cube Software Private Limited |
| CSPO | Central Store Purchase Organization |
| CSR | Cambridge Silicon Radio |
| CSR | Central Scientific Research |
| CSR | Computer Sciences Raytheon |
| CSRE | Consultancy Services for Russian Entrepreneurs |
| CSRP | Company Specific Risk Premium |
| CSRR | Corporate Social Responsibility Report |
| CSS | Callista Software Services |
| CSS | Central Superior Services |