[2] Head Coach: Fabiano Preturlon Ribeiro The following is the Chinese Taipei roster in the 2019 FIVB Volleyball Boys' U19 World Championship.
[4] Head Coach: Mario Raul Izquierdo Perez The following is the Tunisian roster in the 2019 FIVB Volleyball Boys' U19 World Championship.
[7] Head Coach: Carlos Felipe Osorio Arboleda The following is the Czech roster in the 2019 FIVB Volleyball Boys' U19 World Championship.
[15] Head Coach: Gabriela Isela Alarcón Gómez The following is the Dominican roster in the 2019 FIVB Volleyball Boys' U19 World Championship.
[16] Head Coach: Loren Ricardo Rodriguez Martinez The following is the Korean roster in the 2019 FIVB Volleyball Boys' U19 World Championship.