2017–18 Basketball Championship of Bosnia and Herzegovina

The 2017–18 Basketball Championship of Bosnia and Herzegovina was the 17th season of this championship, with twelve teams participating in it. Igokea, the defending champion, did not join the tournament until the second stage.

The competition started on 14 October 2017 and ended in the middle of May 2018.

Competition format
Twelve teams would join the regular season, where the first five teams qualified for the Liga 6 with Igokea, that plays the season's ABA League First Division.

On 18 September 2017, the Basketball Federation of Bosnia and Herzegovina released the calendar of the regular season.

Playoffs
Seeded teams played games 1, 3 and 5 at home.