Club Atlético Osasuna Femenino is a Spanish women's football team from Pamplona, Navarre, currently playing in the Primera Federación.

[9][10] However, within weeks an agreement was secured with fledgling club Mulier FCN [eu],[11] based in nearby Mutilva Baja (Aranguren), to collaborate on the formation of a senior team in the Navarre Regional League (third tier) for the following season, with this squad playing at Osasuna's Tajonar Facilities and Mulier operating its own club structure and youth teams.

[15] Mulier, who declined to join the Osasuna group as it would have resulted in their relegation,[16] performed better without the assistance of their professional neighbours, finishing runners-up in the Segunda División group (they later agreed a new partnership with Athletic Bilbao in 2019),[17] while the separate Osasuna Femenino team dominated the Navarre regional league (80 points from a possible 84) and were promoted to join their former partners, along with the women's sections of the Basque clubs Eibar and Alavés.

[23] In the 2020–21 season, played in a two-phase format due to the COVID-19 pandemic in Spain, Osasuna challenged for promotion to the Primera División for the first time, but finished second behind Alavés (who also had never reached the top tier previously) in both the winter and spring regional groups.

[24] Osasuna competed in the Copa de la Reina for the first time in the 2021–22 season after the competition was opened up to clubs outside the top division; however the lost in the first round to PM Friol (Galicia) who had been relegated from the second tier at the end of the previous campaign.