In the summer of 2014, Antoine Griezmann was sold to Atlético Madrid while top forward Carlos Vela missed the early stages of the season due to fitness issues.

In early November, Real Sociedad found themselves second from bottom, prompting the club to relieve Jagoba Arrasate of his duties after just the tenth matchday.

[2] The Scotsman led the club out of the lower zone of the table and a strong series of results during February and March dispelled fears of relegation.

[5] Real Sociedad reached an agreement with Spanish telecommunications provider Telefónica for the lease of audio-visual rights for the team's league matches for the 2015–16 season.

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