IHSA CHESS
- Illinois Chess Association
- Illinois Events
- Dekalb Chess Club
- Chicago Chess Center
- Chicago Industrial Chess League
- Aurora Naperville Chess Club
- Evanston Chess
- Greater Peoria Chess Federation
- The Illinois Chess Coaches Association
- Illinois Chess Teachers
- Bloomington Normal Area Chess
- Highland Park Scholastic Chess
- Chess Weekend
- Renaissance Knights Chess Foundation
- Rockford Scholastic Chess
- Springfield Chess Club
- Evanston Chess Club
- Illini Chess Club
- Chess-Ed
- Chicago Chess Center
- Bloomington Normal Chess Club
- Route20chessclub
- Caveman Chess
- Touch Move Chess Center