Utricularia blanchetii is a small, probably annual carnivorous plant that belongs to the genus Utricularia. U. blanchetii is endemic to Brazil and is only known from central Bahia state. It grows as a terrestrial or lithophytic plant in damp, sandy soils among rocks or by streams at altitudes from 850 m (2,789 ft) to 1,750 m (5,741 ft). It was originally described and published by Alphonse Pyrame de Candolle in 1844.