The 2020–21 Campeonato Nacional Feminino (also known as Liga BPI for sponsorship reasons) is the 36th edition of Campeonato Nacional Feminino. Due to the COVID-19 pandemic in Portugal, no teams were relegated on the previous season, and a total of eight teams from first stage series were promoted, one from each serie. This led to the implementation of a new format this season including all 20 teams.