The 2019–20 KK Crvena zvezda season was the 75th season in the existence of the club. For the season it is referred to as KK Crvena zvezda mts for sponsorship reasons. The club played in the Adriatic League and the EuroLeague, which were canceled due to the COVID-19 pandemic. The season in the Basketball League of Serbia had no start due to the same reason.

Košarkaški klub Crvena zvezda, usually referred to as KK Crvena zvezda or simply Crvena zvezda, currently named Crvena zvezda Meridianbet for sponsorship reasons, is a men's professional basketball club based in Belgrade, Serbia and the major part of the Red Star multi-sports club. 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 top-tier EuroLeague.