Kira Marije Toussaint (born 22 May 1994) is a Dutch competitive swimmer who specialises in backstroke.

At the 2021 FINA Swimming World Cup, Toussaint placed second overall for a competitor of any gender in terms of total points scored and earned 11 gold medals.

Toussaint qualified for the 2016 Summer Olympics in Rio de Janeiro in the 100 meter backstroke.

In December 2019, Toussaint was found innocent and that no anti-doping rule violation had occurred following an investigation by FINA of one of her doping test sample results from 2 November 2018.

[14] Her performances across all four stops of the World Cup circuit were dominant enough for her to place second overall in terms of total points scored by a competitor, male or female, for all four stops, a total of 227.4 points, and she earned $103,500 of prize money.