Utricularia reniformis is a large perennial carnivorous plant that belongs to the genus Utricularia.

U. reniformis is endemic to Brazil.

It was originally published and described by Augustin Saint-Hilaire in 1830.

It usually grows as a terrestrial plant in wet grasslands and only sometimes as an epiphyte in the water-filled leaf axils of some bromeliad species.

It has been collected in flower between October and March.