A tournament management device manages tournaments consistently from making promotions to progress a game and configured to encourage a member to participate in each suitable tournament. The tournament management device includes a control unit programmed to execute the processes of: a) a process of creating tournament basic information from data including an input game content and the number of participants, and storing the tournament basic information; b) a process of creating, based on the tournament basic information, promotion information which asks for participation in a tournament, and sending the promotion information; c) a process of sending a register screen for participating in the tournament to the outside; d) a register process of storing a participant of the tournament in association with membership identification information on condition that predetermined register information is supplied; and e) a process of holding the tournament with registered participants based on the tournament basic information.