| Abbreviation | Definition |
|---|---|
| CYSA | Connecticut Youth Services Association |
| CYSA | Covington Youth Soccer Association |
| CYSA | Cowlitz Youth Soccer Association |
| CYSA | Crookston Youth Soccer Association |
| CYSA | Cumberland Youth Soccer Association |
| CYSB | Columbus Youth Symphonic Band |
| CYSC | Camden Youth Soccer Club |
| CYSC | Carnatic Youth Society of Canada |
| CYSC | Clay Youth Soccer Club |
| CYSC | Cocalico Youth Soccer Club |
| CYSC | Columbus Youth Soccer Club |
| CYSD | Chicago Youth Service Day |
| CYSD | Child Youth Services Division |
| CYSF | Calgary Youth Science Fair |
| CYSF | Caribbean Youth Science Forum |
| CYSF | Child Youth Sports and Fitness |
| CYSF | Columbia Youth Soccer Federation |
| CYSL | California Youth Soccer League |
| CYSL | Catholic Youth Soccer League |
| CYSL | Catholic Youth Sports League |