In addition to the domestic league, Real Oviedo participated in this season's edition of the Copa del Rey.

The season covered the period from 21 July 2020 to 30 June 2021.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.