The 2020–21 Nemzeti Bajnokság II (also known as 2020–21 Merkantil Bank Liga) is Hungary's 70th season of the Nemzeti Bajnokság II, the second tier of the Hungarian football league system.
The season began in August 2020 and finished in May 2021.
The following teams have changed division since the 2019–20 season.
Following is the list of clubs competing in the league this season, with their location, stadium and stadium capacity.