| Abbreviation | Definition |
|---|---|
| CSIR | Council of Scientific Industrial Research |
| CSIRAC | Council for Scientific and Industrial Research Automatic Computer |
| CSJ | Council for Social Justice |
| CSJP | Council for Social Justice and Peace |
| CSL | Council of Student Leaders |
| CSLC | Colorado Service Learning Council |
| CSLC | Community Service Leadership Council |
| CSNS | Council of State Neurosurgical Societies |
| CSO | Council for Student Organizations |
| CSOT | Council on Sex Offender Treatment |
| CSP | Council on Spiritual Practices |
| CSPC | Capitol Square Preservation Council |
| CSPC | Catholic School Parent Council |
| CSPH | Conseil Supérieur des Personnes Handicapées |
| CSPS | Council on Surgical and Perioperative Safety |
| CSRA | Council of State Restaurant Associations |
| CSRI | Council for Socially Responsible Investment |
| CSSC | College of Sciences Student Council |
| CSSC | Connecticut Separation Science Council |
| CSSE | Council of Soil Science Examiners |