Osasuna B was founded in 1962 asOsasuna Promesas, being renamed in 1991. It first reached thethird division in the1982–83 season, then again in1987, the latter spell eventually lasting more than two decades.
A change in the club structure from 2016 meant that an affiliate club,CD Iruña of theTercera División became part of the Osasuna structure.[2] The Iruña team had to play at least one division below Osasuna B, which soon had a consequence when the latter were relegated from their2017–18 Segunda División B group and Iruña, who had maintained their status for 15 seasons, were administratively sent down to thePrimera Autonómica de Navarra.[3]
In the 2018–19 season, Osasuna B won Group 15 of the Tercera División.[4] After the win over Cádiz B in the promotional play-offs, the team were promoted back toSegunda División B for the 2019–20 season.[5]
In the summer of 2020, the Osasuna affiliation with Iruña ended (though they would remain a local partner club) and a new arrangement was made withCD Subiza to act as the B-team's feeder.[6]
Note: Flags indicate national team as defined underFIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.
Note: Flags indicate national team as defined underFIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.
