2020–21 Fortuna Sittard season

The 2020–21 season was the 53rd season in existence of Fortuna Sittard and the club's third consecutive season in the top flight of Dutch football. In addition to the domestic league, Fortuna Sittard participated in this season's edition of the KNVB Cup. The season covered the period from 1 July 2020 to 30 June 2021.

Matches
The league fixtures were announced on 24 July 2020.