Nassandres sur Risle (, literally Nassandres on Risle) is a commune in the department of Eure, northern France. The municipality was established on 1 January 2017 by merger of the former communes of Nassandres (the seat), Carsix, Fontaine-la-Soret and Perriers-la-Campagne.
The commune along with another 69 communes shares part of a 4,747 hectare, Natura 2000 conservation area, called Risle, Guiel, Charentonne.
Population data refer to the commune in its geography as of January 2025.