Atelopus mucubajiensis is a species of toad in the family Bufonidae.It is endemic to Venezuela.Its natural habitats are subtropical or tropical moist montane forests, subtropical or tropical high-altitude grassland, rivers, and intermittent rivers.It is threatened by habitat loss.
This species of toad has a very limited range of a merely few square kilometers at the type locality, in the Páramo de Mucubají, in the Sierra de Santo Domingo, Venezuelan Andes. Its altitudinal (height) range is 2,300 - 3,500 meters asl.