| Abbreviation | Definition |
|---|---|
| CSI | Cliftons Songwriter Initiative |
| CSI | Current Swing Index |
| CSMA | Coastal Sound Music Academy |
| CSMA | Community School of Music and Arts |
| CSMA | Cyprus School of Music and the Arts |
| CSMT | Center for Studies in Music Technology |
| CSN | Crosby, Stills, and Nash |
| CSN&Y | Crosby, Stills, Nash & Young |
| CSNY | Crosby, Stills, Nash & Young |
| CSO | Charleston Symphony Orchestra |
| CSO | Charlotte Symphony Orchestra |
| CSO | Chattanooga Symphony Orchestra |
| CSO | Chicago Symphony Orchestra |
| CSO | Cincinnati Symphony Orchestra |
| CSO | Cleveland Symphony Orchestra |
| CSO | Colorado Symphony Orchestra |
| CSO | Columbus Symphony Orchestra |
| CSOM | Community School Of Music |
| CSPB | Crossed Swords Pipe Band |
| CSPB | Cyril Scott Pipe Band |