2020–21 Feyenoord season

The 2020–21 season was Feyenoord's 113th season of play, the club's 65th season in the Eredivisie and its 99th consecutive season in the top flight of Dutch football. Feyenoord entered the 2020–21 UEFA Europa League in the group stage.

Disney+ series
In February 2021, Feyenoord and The Walt Disney Company announced the production of a Disney+ series which would see the company producing a documentary about Feyenoord during the 2020–21. The series will consist of 8 episodes. In May 2021 Feyenoord announced that the series would be titled Dat ene woord - Feyenoord and would be available from August 27, 2021. It was later announced that the series would be getting a ninth episode, with the release of the first episode being pushed back to September 1.

European competition play-offs
Four teams play for a spot in the 2021–22 UEFA Europa Conference League second qualifying round.

Player details
Appearances (Apps.) numbers are for appearances in competitive games only including sub appearances

Red card numbers denote: Numbers in parentheses represent red cards overturned for wrongful dismissal.

‡= Preseason squad or youth player, not a member of first team.

Summer windows
In:

(return from loan) (return from loan) (return from loan) (on loan)

Out:

(return from loan)

(return from loan) (return from loan) (on loan) (on loan)

Winter window
In:

(on loan)

Out:

(on loan) (on loan) (on loan) (on loan) (on loan) (on loan) (on loan) (on loan)