Utricularia letestui is a small, probably annual, carnivorous plant that belongs to the genus Utricularia.

It is endemic to the Central African Republic and is only known from three collections.

U. letestui grows as a terrestrial plant in seasonally flooded grasslands, usually at altitudes around 800 m (2,625 ft).

It was originally described and published by Peter Taylor in 1989.

It was named in honor of the French collector G. Le Testu.