Melanohalea peruviana is a species of foliose lichen in the family Parmeliaceae.

Found in Peru, it was described as a new species in 2012 by Ted Essingler.

The type was collected by lichenologists Rolf Santesson and Roland Moberg in 1981, north of Huaraz in Laguna Llaca [es], at an elevation of 4,400 m (14,400 ft).

Although it has a superficial similarity to Melanohalea trabeculata, it can be distinguished from that species by the presence of eight spores per ascus rather than 16–32, and by a more flattened and wrinkled thallus.

Additionally, Melanohalea peruviana does not have detectable secondary compounds in the medulla, whereas M. trabeculata typically has medullary norstictic acid.