The club was founded in 1975 as KK Polivinil. The team stopped its activities because of the war. In 1994 it was reestablished as HKK Posušje, and started competing in the Herzeg-Bosnia League, finishing third in the inaugural season. It played in the 1999–2000 FIBA Korać Cup.[1] In 2021 the club won back promotion to the top tier league.[2]