| Abbreviation | Definition |
|---|---|
| CSC | Canadian Stock Car |
| CSC | Crescent Ski Council |
| CSF | Canadian Snowboard Federation |
| CSHL | Central States Hockey League |
| CSI | Commission Sportive Internationale |
| CSIA | Canadian Ski Instructors Alliance |
| CSIO | Canadian Sport Institute of Ontario |
| CSK | Chennai Super Kings |
| CSL | Chinaren Skill Level |
| CSL | Cincinnati Sports Leagues |
| CSL | Club Sports Lightweight |
| CSL | Cumulative Score List |
| CSLG | Corsica Sports Loisirs Gendarmerie |
| CSLL | Colorado Springs Little League |
| CSM | Card Shuffling Machine |
| CSMO | Center for Sports Medicine and Orthopaedics |
| CSMO | Centre for Sports Medicine and Orthopaedics |
| CSN | Cyber Sports Network |
| CSOC | Combined Sit Out Clubs |
| CSP | Comfortable Starting Pitch |