| # | Name | Verein | Geburtstag | ||
|---|---|---|---|---|---|
| Torwart | |||||
| 1 |  | David Raya |  | Arsenal FC | 15.09.1995 |
| 13 |  | Remiro |  | Real Sociedad San Sebastian | 24.03.1995 |
 | Robert Sánchez |  | Chelsea FC | 18.11.1997 | |
| 23 |  | Unai Simón |  | Athletic Club | 11.06.1997 |
| Abwehr | |||||
 | Aitor Paredes | | Athletic Club | 29.04.2000 | |
| 17 |  | Álex Grimaldo |  | Bayer Leverkusen | 20.09.1995 |
| 24 |  | Cucurella | | Chelsea FC | 22.07.1998 |
 | Dani Carvajal |  | Real Madrid | 11.01.1992 | |
| 5 |  | Daniel Vivian | | Athletic Club | 05.07.1999 |
| 12 |  | Dean Huijsen | | Real Madrid | 14.04.2005 |
 | Iñigo Martínez |  | FC Barcelona | 17.05.1991 | |
 | Aymeric Laporte |  | Al Nassr | 27.05.1994 | |
| 3 |  | Robin Le Normand |  | Atlético Madrid | 11.11.1996 |
| 14 |  | Óscar Mingueza |  | RC Celta | 13.05.1999 |
| 4 |  | Pau Cubarsí | | FC Barcelona | 22.01.2007 |
 | Pau Torres |  | Aston Villa | 16.01.1997 | |
| 2 |  | Pedro Porro |  | Tottenham Hotspur | 13.09.1999 |
 | Raúl Asencio | | Real Madrid | 13.02.2003 | |
| Mittelfeld | |||||
 | Aleix García | | Bayer Leverkusen | 28.06.1997 | |
| 16 |  | Álex Baena |  | Villarreal CF | 20.07.2001 |
| 10 |  | Dani Olmo | | FC Barcelona | 07.05.1998 |
| 8 |  | Fabián Ruiz |  | Paris Saint-Germain | 03.04.1996 |
| 9 |  | Gavi | | FC Barcelona | 05.08.2004 |
| 22 |  | Isco |  | Betis Sevilla | 21.04.1992 |
 | Marc Casadó | | FC Barcelona | 14.09.2003 | |
| 18 |  | Martín Zubimendi | | Real Sociedad San Sebastian | 02.02.1999 |
| 6 |  | Mikel Merino | | Arsenal FC | 22.06.1996 |
 | Pablo Barrios | | Atlético Madrid | 15.06.2003 | |
| 20 |  | Pedri | | FC Barcelona | 25.11.2002 |
 | Pepelu |  | Valencia CF | 11.08.1998 | |
 | Rodri |  | Manchester City | 22.06.1996 | |
 | Sergio Gómez | | Real Sociedad San Sebastian | 04.09.2000 | |
| Sturm | |||||
| 7 |  | Álvaro Morata |  | Galatasaray | 23.10.1992 |
 | Ayoze Pérez | | Villarreal CF | 29.07.1993 | |
 | Bryan Gil |  | Girona FC | 11.02.2001 | |
 | Bryan Zaragoza |  | CA Osasuna | 09.09.2001 | |
| 25 |  | Fermín López | | FC Barcelona | 11.05.2003 |
 | Ferran Torres | | FC Barcelona | 29.02.2000 | |
 | Joselu |  | Al Gharafa | 27.03.1990 | |
| 19 |  | Lamine Yamal | | FC Barcelona | 13.07.2007 |
| 21 |  | Mikel Oyarzabal | | Real Sociedad San Sebastian | 21.04.1997 |
| 11 |  | Nico Williams | | Athletic Club | 12.07.2002 |
 | Rodrigo Riquelme | | Atlético Madrid | 02.04.2000 | |
| 26 |  | Samu Aghehowa |  | FC Porto | 05.05.2004 |
| 15 |  | Yéremy Pino | | Villarreal CF | 20.10.2002 |
| Trainer | |||||
 | Luis de la Fuente | 21.06.1961 | |||
