| Abbreviation | Definition |
|---|---|
| CLO | Chess Life Online |
| CM | CheckMate |
| CMI | ChessMates, Inc., Newark, New Jersey |
| CMSCA | Charlotte Mecklenburg Scholastic Chess Association |
| CMSCA | Charlotte Mecklenburg Scholastics Chess Association |
| CPAI | Chess Players Association of India |
| CPW | Chess Programming Wiki |
| CSCA | Colorado State Chess Association |
| CSCA | Colorado State Chess Association's |
| CSCA | Connecticut State Chess Association |
| CSCL | Canton Scholastic Chess League |
| CSSCS | Colorado Springs Scholastic Chess Series |
| CTCA | Chinese Taipei Chess Association |
| CTG | Chess the Gathering |
| CUCC | Cambridge University Chess Club |
| CVSCL | Chattahoochee Valley Scholastic Chess League |
| CYCL | California Youth Chess League |
| D19 | Shorthand for an opening set of chess moves (not an acronym) |
| DAMER | A lame or goofy Person. A person with a hidden agenda. It could also be a chess or checker move:Ches |
| DBCA | Dibyendu Barua Chess Academy |