Nymphaea × sundvikii is a species of waterlily endemic to Central and East European Russia.

[1][4] It is known from aquatic habitats in the region of Tver, Kostroma, and Nizhny Novgorod.

[5] It has been observed in a Sphagnum bog in a small lake.

[6] It has also been reported to occur in the Kazhim reservoir.

[7] The hybrid is usually found in habitats of sympatric occurrence of the two parent species.