| Abbreviation | Definition |
|---|---|
| CDCA | Chennai District Chess Association |
| CECP | Chess Engine Communication Protocol |
| CEEGE | Chess Expertise from Eye Gaze and Emotion |
| CEGT | Chess Engines Grand Tournament |
| CFCC | Central Florida Chess Club |
| CFCC-KC | Central Florida Chess Club - Kids Club |
| CFNC | Chess Friends Of Northern California |
| CG | Chessgames.com |
| CGBT | Chessmaster Grand Blitz Test |
| CH | Check! |
| CHECK | Children Having Exceptional Chess Know |
| CHESSBASECOM | Chessbase com's |
| CHESSICAL | Chessically |
| CHKMT | CheckMate |
| CHM | CheckMate |
| CHMT | CheckMate |
| CITS | Chess In The Schools, New York, New York |
| CJA | Chess Journalists of America |
| CJCC | Calgary Junior Chess Centre |
| CK | Check |