2021 UCI Women's World Tour

The 2021 UCI Women's World Tour was a competition that included eighteen road cycling events throughout the 2021 women's cycling season. It was the sixth edition of the UCI Women's World Tour, the ranking system launched by the Union Cycliste Internationale (UCI) in 2016. The competition began with Strade Bianche on 6 March, and finished with the Ronde van Drenthe on 23 October.

Dutch rider Annemiek van Vleuten (Movistar Team) became the first rider to win the individual classification for a second time, taking a season-high four overall victories during the season, finishing the season with a tally of 3177 points. Second place went to another Dutch rider, as Demi Vollering (SD Worx) finished on 2563 points, having taken three overall victories in 2021, while third place on 2509 points, was two-time winner Elisa Longo Borghini of Italy, riding for Trek–Segafredo. A total of nine riders won races during the season, while the individual classification lead changed eight times between van Vleuten, Vollering, Longo Borghini, Marianne Vos (Team Jumbo–Visma) and Chantal van den Broek-Blaak (SD Worx).

The youth classification was closely-contested with just two points separating the top two riders in the classification. Honours went to Niamh Fisher-Black from New Zealand of the SD Worx team with 34 points and four victories, ahead of French rider Évita Muzic, who also won four races for FDJ Nouvelle-Aquitaine Futuroscope. Third place in the standings went to Russia's Maria Novolodskaya (A.R. Monex), who scored 22 points and one win. A total of eight riders won races during the season, with the classification lead changing six times between Fisher-Black, Muzic, Novolodskaya, Sarah Gigante (Tibco–Silicon Valley Bank) and Emma Norsgaard Jørgensen (Movistar Team). The teams classification was led from start to finish by SD Worx for their fifth win in six seasons – their first under the SD Worx name – finishing more than 3000 points clear over their closest rivals, Trek–Segafredo; SD Worx took seven wins during the season, including four consecutive race wins earned by Vollering and Anna van der Breggen between La Flèche Wallonne and La Course by Le Tour de France.