ChessOrg is a German-based company specializing in organizing chess tournaments and events. Established in 1984, the company operates under the legal name Chessorg Hoffmann Reisen GmbH and is headquartered in Herbartstraße, Germany. While its primary industry is tour operator activities, ChessOrg has carved a niche in the chess community by hosting various tournaments, including the renowned Seniors Oberfranken Chess Tournament.​

In addition to event organization, ChessOrg manages the website chess.org, an online platform where users can play chess against the computer, challenge friends, or find random opponents. The platform offers various features to enhance the user experience, such as different game configurations and time controls.