2023–24 B1 League season

The 2023–24 B1 League season was the eighth season of the B1 League, the top Japanese professional basketball league, since its establishment in 2015. The regular season began on 5 October 2023.

The Ryukyu Golden Kings are the defending champions, having won their first B1 League title after defeating the Chiba Jets in the 2023 Finals.

Standings

 * Central


 * Eastern


 * Western

Bracket
All matches in the playoffs were in a best-of-three series. Teams in bold advanced to the next round.