The green peafowl or Indonesian peafowl (Pavo muticus) is a peafowl species native to the tropical forests of Southeast Asia and Indochina.

Pavo: From Latin pāvō, likely borrowed from Ancient Greek ταώς (taṓs, “peacock”, peafowl), or possibly imitative (compare paupulō (“to call like a peacock”)).

Muticus: possibly Proto-Indo-European *mut- (“cut short”). Compare muticus (“docked”), Scottish Gaelic mutach (“short”), Ancient Greek μίτυλος (mítulos, “hornless”), μιστύλλω (mistúllō, “something cut up”). Possibly due to the Japanese painting depicting the bird without spurs that Carl Linnaeus based on to classify the fowl as Pavo muticus.