Melanophryniscus simplex is a species of toads in the family Bufonidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical high-altitude grassland, rivers, intermittent freshwater lakes, and freshwater marshes. It is threatened by habitat loss. References simplex Endemic fauna of Brazil Amphibians described in 2002 Taxa named by Ulisses Caramaschi Taxonomy articles created by Polbot