| Abbreviation | Definition |
|---|---|
| SBYC | Saginaw Bay Yacht Club |
| SC | Score Card |
| SC | Sports Car |
| SC | Sportsmans Club |
| SC | SteepleChase |
| SC | Stock Car |
| SC | Street Competition |
| SCA | Ski Club Arlberg |
| SCAA | Seattle Chinese Athletic Association |
| SCAA | South China Athletic Association |
| SCAA | Southern Chesapeake Athletic Association |
| SCAA | Steele Creek Athletic Association |
| SCAC | Solano County Athletic Conference |
| SCAC | Southern Collegiate Athletic Conference |
| SCAC | Southern Cone Athletic Conference |
| SCAT | Southern California Aerobatic Team |
| SCAT | Sports Concussion Assessment Tool |
| SCATS | Skating Conditioning Agility Timing And Shooting |
| SCB | Short Cutting Biker |
| SCB | Speedway Control Bureau |