The 1956–57 Segunda División season was the 26th since its establishment and was played between 8 September 1956 and 16 June 1957.
Contents
Overview before the season
40 teams joined the league, including 4 relegated from the 1955–56 La Liga and 11 promoted from the 1955–56 Tercera División.
Relegated from La Liga
Murcia
Alavés
Cultural Leonesa
Hércules
Promoted from Tercera División