The 2020–21 season was the 54th season of Denizlispor in existence and the club's second consecutive season in the top flight of Turkish football.

In addition to the domestic league, Denizlispor participated in this season's edition of the Turkish Cup.

The season covers the period from July 2020 to 30 June 2021.

Win Draw Loss Fixtures Source: Competitions Source: TFF.org