[1] Head coach: Pablo Martin Ambrosini The following is the Belarus roster in the 2021 FIVB Volleyball Women's U20 World Championship.
[4] Head coach: Hairton Cabral De Oliveira The following is the Dominican Republic roster in the 2021 FIVB Volleyball Women's U20 World Championship.
[5] Head coach: Cristian Cruz Zapata The following is the Egypt roster in the 2021 FIVB Volleyball Women's U20 World Championship.
[10] Head coach: Jose Ricardo Rivera Guinand The following is the Russia roster in the 2021 FIVB Volleyball Women's U20 World Championship.
[15] Head coach: Sahin Catma The following is the United States' roster in the 2021 FIVB Volleyball Women's U20 World Championship.