| 2023–24 B1 League season | |
| League: | B.League |
| Sport: | Basketball |
| Duration: | 5 October 2023 – 28 May 2024 |
| Tv: | Basket LIVE, Amazon Prime Video, Hulu, NHK, SKY PerfecTV!, others |
| Season: | 2023–24 |
| Regular Season: | B1 Regular season |
| Top Scorer: | Perrin Buford (Shimane) |
| Ppg: | 22.6 |
| Rebounds Leader: | Thomas Welsh (Hokkaido) |
| Rpg: | 12.2 |
| Assists Leader: | Yuki Kawamura (Yokohama) |
| Apg: | 8.1 |
| Finals: | B1 Finals |
| Champions: | Hiroshima Dragonflies |
| Relegated: | Shinshu Brave Warriors Toyama Grouses |
| Prevseason: | 2022-23 |
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.[1] The regular season began on 5 October 2023.[2]
The Ryukyu Golden Kings are the defending champions, having won their first B1 League title after defeating the Chiba Jets in the 2023 Finals.[3]
| Team | Outgoing | Incoming | |
|---|---|---|---|
| Off-season | |||
| James Andrisevic | |||
| Ryan Richman | |||
| Luka Pavićević | |||
| In season | |||
| Richard Glesmann | |||
| J. R. Sakuragi | |||
All matches in the playoffs were in a best-of-three series. Teams in bold advanced to the next round.
| Category | Player | Team | Statistic |
|---|---|---|---|
| Points per game | 22.6 | ||
| Rebounds per game | 12.2 | ||
| Assists per game | 7.9 | ||
| Steals per game | 1.9 | ||
| Blocks per game | 1.7 | ||
| FG% | 61.0% | ||
| 3FG% |  Scott Eatherton | Nagoya Diamond Dolphins | 47.1% |
| FT% | 91.1% | ||
| Category | Team | Statistic |
|---|---|---|
| Points per game | 89.5 | |
| Rebounds per game | 34.0 | |
| Assists per game | San-en NeoPhoenix | 22.3 |
| Steals per game | 8.0 | |
| Blocks per game | 3.6 | |
| FG% | 46.5% | |
| 3FG% | 38.2% | |
| FT% | Sun Rockers Shibuya | 78.7% |
| Team | Competition | Progress |
|---|---|---|
| East Asia Super League | Championship game | |
| Group stage Group B |