2020–21 1. FC Union Berlin season

The 2020–21 1. FC Union Berlin season was the club's 56th season in existence and the second consecutive season in the top flight of German football, the Bundesliga. They also participated in the DFB-Pokal. The season covered the period from 1 July 2020 to 30 June 2021.

Matches
The league fixtures were announced on 7 August 2020.

Appearances and goals
! colspan=14 style=background:#dcdcdc; text-align:center| Goalkeepers

! colspan=14 style=background:#dcdcdc; text-align:center| Defenders

! colspan=14 style=background:#dcdcdc; text-align:center| Midfielders

! colspan=14 style=background:#dcdcdc; text-align:center| Forwards

! colspan=14 style=background:#dcdcdc; text-align:center| Players transferred out during the season