| Abbreviation | Definition |
|---|---|
| CRSA | Cedar River Soccer Association |
| CRSA | Congaree Rapid Soccer Association |
| CRSA | Coon Rapids Soccer Association |
| CSA | Canadian Soccer Association |
| CSA | Charlotte Soccer Academy |
| CSA | Colorado Soccer Association |
| CSCA | Connecticut Soccer Coaches Association |
| CSL | Coast Soccer League |
| CSL | Cosmopolitan Soccer League |
| CSOA | Commonwealth Soccer Officials Association |
| CSPA | College Soccer Prep Academy |
| CSRN | Champions Soccer Radio Network |
| CSSA | Connecticut State Soccer Association |
| CSSC | Central Susquehanna Soccer Club |
| CSSC | College Station Soccer Club |
| CSSL | Canterbury Sunday Soccer League |
| CSVO | Club de soccer de la Vallee de lor |
| CTSA | Chisholm Trail Soccer Association |
| CUIT | Commando Ultrà Indian Trips |
| CUSA | Centerville United Soccer Association |