The 2019–20 Turkish Airlines EuroLeague was the 20th season of the modern era of the EuroLeague and the 10th under the title sponsorship of the Turkish Airlines. Including the competition's previous incarnation as the FIBA Europe Champions Cup, this was the 63rd season of the premier basketball competition for European men's clubs. The season started on 3 October 2019 and played its last games on 6 March 2020 due to the COVID-19 pandemic.