Lepraria juanfernandezii is a species of dust lichen in the family Stereocaulaceae.

It was formally described as a new species by Martin Kukwa in 2019.

The type was collected from Robinson Crusoe Island (Juan Fernández Islands, Chile).

The lichen contains divaricatic acid, a secondary metabolite known to exist in six other Lepraria species.

This Lecanorales-related article is a stub.