The 2020–21 Blackpool F.C. season was the club's 112th season in the English Football League, and their fourth-consecutive season in League One, the third tier of the Football League. The season covers the period from 1 July 2020 to 30 June 2021. The club finished third in League One and won promotion to the EFL Championship via the play-offs after a six-year absence. It was head coach Neil Critchley's first full season in charge.