The Basketball League of Serbia (Serbian: Кошаркашка лига Србије / Košarkaška liga Srbije), commonly abbreviated as KLS, is a top-tier men's professional basketball league in Serbia.

It is currently not run by the Basketball Federation of Serbia (KSS).

The SuperLeague has 8 clubs divided into 2 groups of 4 teams.

The best 4 clubs (top 2 teams from groups A and B each) in the SuperLeague go to the Playoff stage.

The League has had several denominations through the years due to its sponsorship: Total number of national champions won by Serbian clubs.