2020–21 AD Alcorcón season

The 2020–21 season was the 50th season of Agrupación Deportiva Alcorcón in existence and the club's eleventh consecutive season in the second division of Spanish football. In addition to the domestic league, Alcorcón participated in this season's edition of the Copa del Rey. The season covered the period from 21 July 2020 to 30 June 2021.

Matches
The league fixtures were announced on 31 August 2020.