The 2015–16 season was the 96th season in the existence of CA Osasuna and the club's second consecutive season in the second division of Spanish football.

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

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 Source: Soccerway Source: La Liga Adelante The league fixtures were announced on 14 July 2015.