The following is the squad list for the 2017 FIFA U-20 World Cup. Each squad consisted of 21 players in total, three of whom had to be goalkeepers.
Players names marked in bold have been capped at full international level.
Head coach: Shin Tae-yong
Head coach: Mandiou Diallo
Head coach: Claudio ÃÂbeda
On 19 May, Ezri Konsa replaced injured Rico Henry.
Head coach: Paul Simpson
Head coach: Rafael Dudamel
Head coach: Guido Streichsbier
Head coach: Dejan Gluà ¡ÃÂeviÃÂ
Head coach: Marco Antonio Ruiz
Head coach: Beston Chambeshi
On 2 May 2017, Portugal announced their 21-man final list. On 9 May, Hélder Ferreira replaced the injured Aurélio Buta.
Head coach: EmÃÂlio Peixe
Head coach: Amir Hossein Peiravani
Head coach: Marcelo Herrera
On 17 May, Sirgio Kammies replaced the injured Phakamani Mahlambi.
Head Coach: Thabo Senong
Head coach: Atsushi Uchiyama
Head coach: Alberigo Evani
Head coach: Fabián Coito
On 21 May, Faitout Maouassa replaced injured Ronaël Pierre-Gabriel.
Head coach: Ludovic Batelli
Head coach: Carlos Tábora
Head coach: Hoàng Anh Tuấn
Head coach: Darren Bazeley
Head coach: Javier RodrÃÂguez
On 17 May, Auston Trusty replaced the injured Marlon Fossey.
Head Coach: Tab Ramos
Head Coach: Saad Al-Shehri
Head Coach: Joseph Koto