The 2023 FIFA U-20 World Cup was an international football tournament held in Argentina from 20 May to 11 June 2023. The 24 participating national teams were required to register a squad of 21 players, including at least three goalkeepers (Regulations Article 27.1). Only players in these squads were eligible to take part in the tournament. The tournament exclusively required players to be born between 1 January 2003 and 31 December 2007 to be eligible, that is, they had to be a maximum of 20 years old and at least 16 years old by the end of the calendar year in which the competition was played (Regulations Article 24.2).
Each participating national team had to submit a provisional list of a minimum of 35 and a maximum of 55 players (including at least four goalkeepers) to FIFA by the deadline stipulated by them (10 April 2023). The provisional lists were not published by FIFA and player changes were allowed only in exceptional cases (Regulations Article 25). The final list of 21 players per national team had to be submitted to FIFA by the deadline stipulated by them (10 May). All players in the final list had to be chosen from the respective provisional list. 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 (Regulations Article 27).
FIFA published final lists of all teams on 12 May 2023.
The age listed for each player is on 20 May 2023, the first day of 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 who are of a different nationality than their own national team. Players name marked in bold have been capped at full international level.
Group A
Argentina
Argentina announced a provisional squad of 37 players on 18 April 2023. The final squad was then announced on 3 May 2023.
Head coach: Javier Mascherano
Uzbekistan
Uzbekistan announced their final squad on 8 May 2023.
Head coach: Ravshan Khaydarov
Guatemala
Guatemala announced their final squad on 11 May 2023.
Head coach: Rafael Loredo
New Zealand
New Zealand announced their final squad on 1 May 2023.
Head coach: Darren Bazeley
Group B
United States
The United States announced their final squad on 10 May 2023. Mauricio Cuevas withdrew injured and was replaced by Michael Halliday on 18 May.
Head coach: Mikey Varas
Ecuador
Ecuador announced their final squad on 9 May 2023.
Head coach: Miguel Bravo
Fiji
Fiji announced their final squad on 10 May 2023.
Head coach: Bobby Mimms
Slovakia
Slovakia announced a provisional squad of 48 players on 2 May 2023. The final squad was announced on 11 May 2023. On 15 May, Bálint Csóka replaced Dominik Hollý, who had withdrawn due to an injury.
Head coach: Albert Rusnák
Group C
Senegal
Senegal announced their final squad on 10 May 2023. On 22 May, Ndiack Sall replaced Landing Badji, who had withdrawn due to an injury.
Head coach: Malick Daf
Japan
Japan announced their final squad on 9 May 2023.
Head coach: Koichi Togashi
Israel
Israel announced their final squad on 7 May 2023. Goalkeeper Nitai Greis replaced goalkeeper Lior Gliklich, who had withdrawn due to an injury.
Head coach: Ofir Haim
Bold denotes players who have been capped for the senior team. Names in italics denote players who have been capped for the U-21 team.
Colombia
Colombia announced their squad on 9 May 2023.
Head coach: Héctor Cárdenas
Group D
Italy
Italy announced their squad on 11 May 2023.
Head coach: Carmine Nunziata
Brazil
Brazil announced their final squad on 28 April 2023. On 3 May, Jean Pedroso replaced Kaiky, who had withdrawn due to an injury. On 7 May, Corinthians forward Pedrinho was replaced by Marquinhos because his club decided not to release him. On 11 May, defender Michel was ruled out due to an injury, and one day later was replaced by Douglas Mendes.
Head coach: Ramon Menezes
Nigeria
Nigeria submitted a provisional squad of 55 players. The final squad was announced on May 8 2023. On 9 May, goalkeeper Saheed Jimoh was replaced by John Utoblo.
Head coach: Ladan Bosso
Dominican Republic
Dominican Republic announced their final squad on 8 May 2023.