Košarkaški klub Partizan, commonly referred to as Partizan or Partizan Belgrade in English-speaking media, and for sponsorship reasons as Partizan Mozzart Bet, 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 ABA League and the EuroLeague.

Lajos "Lala" Engler, also credited as Lajoš Engler, was an ethnic Hungarian teacher and basketball player, who represented the Yugoslavia national basketball team internationally.