2025 FIVB Volleyball Men's U21 World Championship squads

China A 12-player squad was announced on 19 August 2025. Head coach: Pawel Woicki Egypt A 12-player squad was announced on 19 August 2025. Head coach: Ahmed Samir Eldardiri United States A 12-player squad was announced on 19 August 2025. Head coach: John Hawks IV Thailand A 12-player squad was announced on 19 August 2025. Head coach: Monchai Supajirakul Morocco A 12-player squad was announced on 19 August 2025. Head coach: Ismail Moujoud Turkey A 12-player squad was announced on 19 August 2025. Head coach: Serkan Oğuz ==Pool B==

Iran A 12-player squad was announced on 19 August 2025. Head coach: Gholamreza Momenimoghaddam Poland A 12-player squad was announced on 19 August 2025. Head coach: Piotr Graban Canada A 12-player squad was announced on 19 August 2025. Head coach: Chris Voth South Korea A 12-player squad was announced on 19 August 2025. Head coach: Suk Jin-wook Puerto Rico A 12-player squad was announced on 19 August 2025. Head coach: Gerardo De Jesus Sanchez Kazakhstan A 12-player squad was announced on 19 August 2025. Head coach: Sergey Trikoz ==Pool C==

Bulgaria A 12-player squad was announced on 19 August 2025. Head coach: Ventzislav Simeonov Brazil A 12-player squad was announced on 19 August 2025. Head coach: Anderson Rodrigues Czech Republic A 12-player squad was announced on 19 August 2025. Head coach: Michal Nekola Colombia A 12-player squad was announced on 19 August 2025. Head coach: Camilo Hernandez Atehortua Japan A 12-player squad was announced on 19 August 2025. Head coach: Yoshitsugu Ueda Cuba A 12-player squad was announced on 19 August 2025. Head coach: Liancen Estrada Jova ==Pool D==

Italy A 12-player squad was announced on 19 August 2025. Head coach: Vincenzo Fanizza Argentina A 12-player squad was announced on 19 August 2025. Head coach: Sebastian Fernandez Tunisia A 12-player squad was announced on 19 August 2025. Head coach: Tarek Ouni France A 12-player squad was announced on 19 August 2025. Head coach: Slimane Belmadi Ukraine A 12-player squad was announced on 19 August 2025. Head coach: Sergii Kapelus Indonesia A 12-player squad was announced on 19 August 2025. Head coach: Li Qiujiang ==References==