The 2020–21 season was Hamburger SV's 102nd season in existence and the club's third consecutive season in the second flight of German football. In addition to the domestic league, Hamburger SV participated in this season's edition of the DFB-Pokal. The season covered the period from 1 July 2020 to 30 June 2021.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.