The 2020–21 Rayo Vallecano season was the club's 96th season in existence and the second consecutive season in the second division of Spanish football. In addition to the domestic league, Rayo Vallecano participated in this season's edition of the Copa del Rey. The season covered the period from 21 July 2020 to 30 June 2021.
Players
First-team squad
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.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.