This is a list of Spanish football transfers for the summer sale in the 2015–16 season of La Liga and Segunda División. Only moves from La Liga and Segunda División are listed.
The summer transfer window began on 1 July 2015, although a few transfers took place prior to that date. The window closed at midnight on 1 September 2015. Players without a club can join one at any time, either during or in between transfer windows. Clubs below La Liga level can also sign players on loan at any time. If needed, clubs can sign a goalkeeper on an emergency loan, if all others are unavailable.
La Liga
Athletic Bilbao
Manager: Ernesto Valverde (3rd season)
In:
Out:
Atlético Madrid
Manager: Diego Simeone (5th season)
In:
Out:
Barcelona
Manager: Luis Enrique Martínez (2nd season)
In:
Out:
Betis
Manager: Pepe Mel (2nd season)
In:
Out:
Celta Vigo
Manager: Eduardo Berizzo (2nd season)
In:
Out:
Deportivo La Coruña
Manager: Víctor Sánchez (2nd season)
In:
Out:
Eibar
Manager: José Luis Mendilibar (1st season)
In:
Out:
Espanyol
Manager: Sergio González (2nd season)
In:
Out:
Getafe
Manager: Fran Escribá (1st season)
In:
Out:
Granada
Manager: José Ramón Sandoval (2nd season)
In:
Out:
Las Palmas
Manager: Paco Herrera (2nd season)
In:
Out:
Levante
Manager: Lucas Alcaraz (2nd season)
In:
Out:
Málaga
Manager: Javi Gracia (2nd season)
In:
Out:
Rayo Vallecano
Manager: Paco Jémez (4th season)
In:
Out:
Real Madrid
Manager: Rafael Benítez (1st season)
In:
Out:
Real Sociedad
Manager: David Moyes (2nd season)
In:
Out:
Sevilla
Manager: Unai Emery (3rd season)
In:
Out:
Sporting Gijón
Manager: Abelardo Fernández (3rd season)
In:
Out:
Valencia
Manager: Nuno Espírito Santo (2nd season)
In:
Out:
Villarreal
Manager: Marcelino García Toral (3rd season)
In:
Out:
Segunda División
Alavés
Manager: José Bordalás (1st season)
In:
Out:
Albacete
Manager: Luis César Sampedro (4th season)
In:
Out:
Alcorcón
Manager: Juan Ramón López Muñiz (1st season)
In:
Out:
Almería
Manager: Sergi Barjuan (2nd season)
In:
Out:
Bilbao Athletic
Manager: José Ángel Ziganda (5th season)
In:
Out:
Córdoba
Manager: José Luis Oltra (1st season)
In:
Out:
Elche
Manager: Rubén Baraja (1st season)
In:
Out:
Gimnàstic
Manager: Vicente Moreno (3rd season)
In:
Out:
Girona
Manager: Pablo Machín (2nd season)
In:
Out:
Huesca
Manager: Luis Tevenet (2nd season)
In:
Out:
Leganés
Manager: Asier Garitano (3rd season)
In:
Out:
Llagostera
Manager: Lluís Carrillo (2nd season)
In:
Out:
Lugo
Manager: Luis Milla (1st season)
In:
Out:
Mallorca
Manager: Albert Ferrer (1st season)
In:
Out:
Mirandés
Manager: Carlos Terrazas (3rd season)
In:
Out:
Numancia
Manager: Jagoba Arrasate (1st season)
In:
Out:
Osasuna
Manager: Enrique Martín Monreal (2nd season)
In:
Out:
Oviedo
Manager: Sergio Egea (2nd season)
In:
Out:
Ponferradina
Manager: José Manuel Díaz (2nd season)
In:
Out:
Tenerife
Manager: Raül Agné (2nd season)
In:
Out:
Valladolid
Manager: Gaizka Garitano (1st season)
In:
Out:
Zaragoza
Manager: Ranko Popović (2nd season)
In:
Out: