This article shows the rosters of all participating teams at the 2019 FIVB Volleyball Men's World Cup in Japan.
Argentina.
The following is the Argentine roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Marcelo Méndez
Australia.
The following is the Australian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Mark Lebedew
Brazil.
The following is the Brazilian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Renan Dal Zotto
Canada.
The following is the Canadian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Daniel Lewis 
Egypt.
The following is the Egyptian roster in the 2019 FIVB Volleyball Men's World Cup.
Head Coach: Gido Vermeulen
Iran.
The following is the Iranian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Igor Kolaković
Italy.
The following is the Italian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Gianlorenzo Blengini
Japan.
The following is the Japanese roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Yuichi Nakagaichi
Poland.
The following is the Polish roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Vital Heynen 
Russia.
The following is the Russian roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: Tuomas Sammelvuo
Tunisia.
The following is the Tunisian roster in the 2019 FIVB Volleyball Men's World Cup.
Head Coach: Antonio Giaccobe
The following is the American roster in the 2019 FIVB Volleyball Men's World Cup.
Head coach: John Speraw
References.
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