The 2023–24 season was Athletic Bilbao's 126th season in existence and 93rd consecutive season in La Liga.

They also competed in the Copa del Rey, winning the latter title for the first time since 1984.

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

Players may hold more than one non-FIFA nationality.

Win Draw Loss Fixtures Source: Soccerway Source: La Liga The league fixtures were unveiled on 22 June 2023.