The women's keirin competition at the 2021 UEC European Track Championships was held on 9 October 2021.

[1] The first two riders in each heat qualified to the second round, all other riders advanced to the first round repechages.

[2]

The first three riders in each heat qualify to the second round.

The first three riders in each heat qualified to final 1–6, all other riders advanced to final 7–12.