Nuphar ozarkana is a species of aquatic plant native to the US-American states Arkansas, Missouri, and Oklahoma.

[1] Nuphar ozarkana is an aquatic species with a slender rhizome.

[2] The pedunculate, yellow, 30 mm wide flowers have stout, glabrous peduncles.

[3] This species has an outstandingly low number of seeds per fruit.

[1] The type specimen was collected by Otto M. Smith along White River in Southern Missouri in August 1910.