2020–21 Red Star Belgrade season

The 2020–21 Red Star Belgrade season was the club's 15th in the Serbian SuperLiga and 75th consecutive season in the top flight of Yugoslav and Serbian football. The club participated in the Serbian SuperLiga and Serbian Cup winning them both, and took part in the UEFA Champions League and the UEFA Europa League.

Squad statistics
! colspan=14 style="background:red; color:white; text-align:center;"| Goalkeepers

! colspan=14 style="background:red; color:white; text-align:center;"| Defenders

! colspan=14 style="background:red; color:white; text-align:center;"| Midfielders

! colspan=14 style="background:red; color:white; text-align:center;"| Forwards

! colspan=14 style="background:red; color:white; text-align:center;"| Players transferred out during the season

Goalscorers
Includes all competitive matches. The list is sorted by shirt number when total goals are equal.

Clean sheets
Includes all competitive matches. The list is sorted by shirt number when total clean sheets are equal.