Košarkaški klub Partizan, commonly known as Partizan Belgrade, or as Partizan Mozzart Bet for sponsorship reasons, is a professional basketball club based in Belgrade, Serbia. It is part of the multi-sports Belgrade-based club Partizan. The club is a founding member and shareholder of the Adriatic Basketball Association, and competes in the Serbian League (KLS), the ABA League, and the continental top-tier EuroLeague.