In addition to the domestic league, Athletic Bilbao participated in this season's editions of the Copa del Rey and the Supercopa de España.

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.

Win Draw Loss Source: Soccerway Source: La Liga The league fixtures were announced on 31 August 2020.