2024–25 B1 League season

2024–25 B1 League season
LeagueB1 League
Season2024–25
Duration5 October 2024 – 4 May 2025
(Regular season)
9 May 2024 – 27 May 2025
(Playoffs)
Games played60
Teams24
B1 Regular season
Top seedUtsunomiya Brex
Season MVP D. J. Newbill (Utsunomiya)
B1 Finals
ChampionsUtsunomiya Brex
Finals MVP D. J. Newbill (Utsunomiya)
Statistical leaders
Points Brock Motum (Shiga)
Rebounds Thomas Welsh (Hokkaido)
Assists Ryusei Sasaki (San-en)
2025–26 →

The 2024–25 B1 League season was the ninth season of the B1 League, the top Japanese professional basketball league, since its establishment in 2015. The regular season began on 5 October 2024.

The Hiroshima Dragonflies were the defending champions, having won their first B1 League title after defeating the Ryukyu Golden Kings in the 2024 finals. Utsunomiya Brex won the title, after defeating the Ryukyu Golden Kings in three games in the finals. As champions, they qualified for the 2025 Basketball Champions League Asia and the 2025–26 East Asia Super League. D. J. Newbill stood out individually this season, winning both the season MVP and finals MVP awards.