Real Sociedad de Fútbol "C" is a Spanish football team based in San Sebastián, in the autonomous community of Basque Country.

Founded in 1998 as Club Deportivo Berio Futbol Taldea, in 2016 the team was integrated fully into the structure of Real Sociedad, becoming its second reserve squad.

In the previous two seasons, after gaining promotion to the Tercera División, Berio operated as a farm team for Real Sociedad but still played at their own stadium wearing their traditional green kit.

[4] 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.