The women's vault event at the 2020 Summer Olympics was held on 25 July and 1 August 2021 at the Ariake Gymnastics Centre.

[1] Unlike the other apparatus events, vault requires gymnasts to perform two exercises in order for results to count towards the vault final; most of the gymnasts perform only one (if they are participating in team or individual all-around) or none (if they are only participating in other apparatus).

MyKayla Skinner of the United States earned the silver medal after originally being excluded by the two-per-country rule.

[3] She was replaced in the final by teammate MyKayla Skinner, who had previously been excluded due to the two-per-country rule.

A National Olympic Committee (NOC) could enter up to 6 qualified gymnasts: a team of 4 and up to 2 specialists.

The top 8 qualifiers in the qualification phase (limit two per NOC) advanced to the apparatus final.