2020–21 1. FC Heidenheim season

The 2020–21 season is '''1. FC Heidenheim's''' 14th season in existence and the club's 7th consecutive season in the second flight of German football. In addition to the domestic league, 1. 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.

Matches
The league fixtures were announced on 7 August 2020.