The Junín Rail (Laterallus tuerosi) is a species of bird in the Rallidae family. It has sometimes considered a distinctive subspecies of the Black Rail (L. jamaicensis). The Junín Rail is, as suggested by its common name, endemic to marshy habitats around Lake Junín in west-central Peru. It is threatened by habitat loss. The Junin Flightless Grebe, another highly endangered species, is restricted to the same lake.