FC Heidenheim's 14th season in existence and the club's 7th consecutive season in the second flight of German football.

FC Heidenheim participated in this season's edition of the DFB-Pokal.

The season covers the period from 7 July 2020 to 30 June 2021.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Source: soccerway The league fixtures were announced on 7 August 2020.