The 2020–21 Liga I (also known as Casa Liga 1 for sponsorship reasons) was the 103rd season of the Liga I, the top professional league for Romanian association football clubs. The season started on 21 August 2020 and ended on 19 May 2021. CFR Cluj were winners and three-time defending champions. It was the sixth season to take place in the play-off/play-out format, and the first since the 2005–06 season to feature 16 teams.
