The 2020–21 season was the 87th season in the existence of AS Saint-Étienne and the club's 17th consecutive season in the top flight of French football. In addition to the domestic league, Saint-Étienne participated in this season's edition of the Coupe de France. The season covered the period from 25 July 2020 to 30 June 2021.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.