The Japan Basketball League (JBL) was a professional basketball league in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. It made up the top-tier of basketball in Japan alongside the bj league, Japan's other basketball competition, with no

promotion and relegation Promotion and relegation is used by sports leagues as a process where teams can move up and down among divisions in a league system, based on their performance over a season. Leagues that use promotion and relegation systems are sometimes call ...

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.

History

The Japan Basketball League was formed after the JBL Super League, which was held from 2001 to 2007, was disbanded. The new Japan Basketball League started with the 2007–08 season with 7 teams of the JBL Super League (

Aisin SeaHorses Seahorses Mikawa is a Japanese professional basketball team located in Kariya and sponsored by Aisin. The team was founded in 1947. The team played in the National Basketball League (Japan), National Basketball League. The current head coach is ...

, Hitachi SunRockers, Mitsubishi Electric Diamond Dolphins, OSG Phoenix, Panasonic Super Kangaroos, Toshiba Red Thunders, Toyota Alvark), and one team from another league, Rera Kamuy Hokkaido.