| Abbreviation | Definition |
|---|---|
| CBSC | Council Bluffs Soccer Club |
| CCSA | Cape Coral Soccer Association |
| CCSA | Clark County Soccer Association |
| CCSA | Clermont Central Soccer Association |
| CCSA | Clermont Central Soccer Association Clermont Central Soccer Association |
| CCSC | Central Carolina Soccer Club |
| CCSC | Clay County Soccer Club |
| CCSL | Capital City Soccer League |
| CCSL | Capital Coed Soccer League |
| CCSL | Central California Soccer League |
| CCSL | Central Coast Soccer League |
| CCSL | Connecticut Club Soccer League |
| CCY | Canada Cup Youth |
| CDSL | Clare District Soccer League |
| CESA | Columbus East Soccer Association |
| CFRS | Chicago Fire Rec Soccer |
| CFSL | Central Florida Soccer League |
| CFYSA | Cape Fear Youth Soccer Association (Wilmington, NC) |
| CGSA | Central Georgia Soccer Association |
| CGSCA | Connecticut Girls Soccer Coaches Association |