Xanthoparmelia barklyensis is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. Found in Southern Africa, it was formally described as a new species in 1986 by the American lichenologist Mason Hale. The type specimen was collected from Barkly Pass at an elevation of about , where it was growing on sandstone. The lichen contains constipatic acid as well as associated fatty acids, and usnic acid. Hale suggested that this species could be a morphotype of Xanthoparmelia aliphatica, from which it differs by having a pale lower thallus surface.