| Founded | 2007 |
|---|---|
| First season | 2007–08 |
| Folded | 2013 |
| Country |  Japan |
| Confederation | FIBA Asia (Asia) |
| Number of teams | 8 |
| Level on pyramid | 1 |
| Relegation to | JBL2 |
| Last champions | Aisin SeaHorses (4th title) |
| Most championships | Aisin SeaHorses (4) |
| Website | jbl.or.jp/ (Archived) |
The Japan Basketball League (JBL) was a professional basketball league in Japan. It made up the top-tier of basketball in Japan alongside the bj league, Japan's other basketball competition, with no promotion and relegation between bj and the JBL.
The JBL was composed of two divisions, the JBL (Division 1, formerly JBL Super League) and the JBL2 (Division 2, formerly Japan League).
In June 2012, the Japan Basketball Association announced the establishment of the National Basketball League (NBL) as the topflight professional league in Japan. The 2012–13 season was the last JBL season as JBL teams joined the NBL.