Xanthoparmelia toninioides is a species of saxicolous (rock-dwelling), foliose lichen in the family Parmeliaceae. Found in South Africa, it was formally described as a new species in 1986 by the American lichenologist Mason Hale. The type specimen was collected about east of Springbok (Cape Province) at an elevation of , where it was found growing on sloping granite domes in karoo vegetation. The lichen thallus, which is tightly attached to its rock , measures broad and is light yellow green in color. It contains hypoprotocetraric acid, 4-O-demethylnotatic acid, and usnic acid.