2019 FIFA U-20 World Cup squads

The following is a list of all the squads of the national teams that participated in the 2019 FIFA U-20 World Cup. Each team had to name a preliminary squad of between 22 and 50 players. From the preliminary squad, the team had to name a final squad of 21 players (three of whom must be goalkeepers) by the FIFA deadline. Players in the final squad could be replaced by a player from the preliminary squad due to serious injury or illness up to 24 hours prior to kickoff of the team's first match. Players born on or after 1 January 1999 and on or before 31 December 2003 were eligible to compete in the tournament.

The nationality for each club reflects the national association (not the league) to which the club is affiliated. A flag is included for coaches that are of a different nationality than their own national team. Those marked in bold have been capped at full International level.