The following is a list of all the squads of the national teams that competed at the 2013 FIFA U-20 World Cup. Each squad consisted of 21 players in total, three of whom had to be goalkeepers.
Players whose names are marked in bold have been capped at full international level.
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Head coach: Pierre Mankowski
====== Head coach: Sellas Tetteh
====== Head coach: Tabaré Ramos
====== Head coach: Julen Lopetegui
====== Head coach: Raúl González
====== Head coach: Lee Kwang-Jong
====== Head coach: John Obuh
====== Head coach: Edgar Borges
====== Head coach: Carlos Alberto Restrepo
====== Head coach: Feyyaz Uçar
====== Head coach: Mauricio Alfaro
====== Head coach: Paul Okon
====== Head coach: Sergio Almaguer
====== Head coach: Kostas Tsanas
====== Head coach: Victor Genes
====== Head coach: Moussa Keita
====== Head coach: Mario Salas
====== Head coach: Rabie Yassin
====== Head coach: Peter Taylor
====== Head coach: Hakeem Shaker
====== Head coach: Chris Milicich
====== Head coach: Akhmadjan Musaev
====== Head coach: Juan Verzeri
====== Head coach: Dinko JeliÃÂiÃÂ
The Iraq, Uzbekistan and Cuba squads were made up entirely of players from the respective countries' domestic leagues.