Number of teams playing in Japan's professional basketball circuit 2023, by league
In 2023, Japan's first-tier professional basketball league (B1) comprised 24 teams. The B1 was the largest professional basketball league in terms of the number of participating teams. Japan's professional basketball circuit is managed by the Japan Basketball Association, which is the governing body of basketball in Japan and responsible, among other things, for the spread of basketball and the organization of its professional sports leagues.