The 2020–21 Second League was the 65th season of the Second League, the second tier of the Bulgarian football league system, and the 5th season under this name and current league structure. It was delayed by two weeks due to the COVID-19 situation in Bulgaria, which saw footballers from a number of the participating teams testing positive for COVID-19 in July 2020, with Minyor Pernik especially affected. The season began in August 2020.