The women's BMX racing competition at the 2020 Summer Olympics took place on 29 and 30 July 2021 at the Ariake Urban Sports Park.

[2] This was the 4th appearance of the event, which has been held at every Summer Olympics since BMX racing was added to the programme in 2008.

[3] A preview by Olympics.com noted the favourites as Pajón, Willoughby, Laura Smulders of the Netherlands (2018 World Champion), and Saya Sakakibara of Australia.

[5] A National Olympic Committee (NOC) could enter up to three qualified cyclists in the BMX race.

There were 24 quota places available, allocated as follows:[2] The competition was a three-round tournament, with quarterfinals, semifinals, and a final.