The 2021 Atlantic 10 Conference women's soccer tournament was the postseason women's soccer tournament for the Atlantic 10 Conference held from October 30 through November 7, 2021.
The quarterfinals of the tournament were held at campus sites, while the semifinals and final took place at Baujan Field in Dayton, Ohio.
The eight-team single-elimination tournament consisted of three rounds based on seeding from regular season conference play.
The defending tournament champions were the Saint Louis Billikens, who successfully defended their championship as the third seed, defeating fourth seed UMass in the final.
Shields and Saint Louis have won four straight Atlantic 10 Tournaments in a row.