The 2019–20 Basketball League of Serbia (Serbian Cyrillic: Кошаркашка лига Србије 2019–20.) is the 14th season of the Basketball League of Serbia, the highest professional basketball league in Serbia. Also, it's the 76th national championship played by Serbian clubs inclusive of nation's previous incarnations as Yugoslavia and Serbia & Montenegro. The regular season began in October 2019 and ended in March 2020. The SuperLeague season was suspended prior to its start due to the COVID-19 pandemic. On 28 May 2020, the League Assembly canceled definitely the season due to the COVID-19 pandemic.