The 2021 FIVB Women's Volleyball Nations League was the third edition of the FIVB Women's Volleyball Nations League, an annual women's international volleyball tournament. This edition was scheduled to start earlier than the previous edition due to the 2020 Summer Olympics in July. It was held in between May and June 2021, and the final round took place at the Rimini Fiera in Rimini, Italy.
United States won their third title in the competition, outlasting Brazil in the final. Turkey swept the third place match against Japan. Michelle Bartsch-Hackley claimed her second MVP title of the tournament.
In the 2019 edition sixteen teams qualified for the competition. Twelve of them qualified as core teams which could not face relegation. Other four teams were selected as challenger teams which could be relegated from the tournament. Canada as winner of 2019 Challenger Cup earned the right to participate in this tournament replacing Bulgaria, the last placed challenger team after the 2019 edition.
The 16 teams compete in a round-robin format. The teams play 3 matches each week and compete five weeks long, for 120 matches. The top four teams after the preliminary round compete in the final round. This year there won't be any promotion or relegation and the 16 participants will also compete in the 2022 edition.
The four qualified teams play knock-out round. The semifinals winners advance to compete for the Nations' League title. The losers face each other in the third place match.
The 16 national teams involved in the tournament were required to register a squad of 25 players, which every week's 14-player roster must be selected from. Each country must declare its 14-player roster two days before the start of each week's round-robin competition.
<section begin="2021 VNL prelims" /><section end="2021 VNL prelims" />
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<small>Source: VNL 2021 final standings</small>
<small>Statistics leaders correct as of preliminary round.</small>
<small>Statistics leaders correct as of final round.</small>