Beelzebub's tube-nosed bat (Murina beelzebub), also Beelzebub bat or demon bat, is a species in the vesper bat family Vespertilionidae, found in the Greater Mekong region of Southeast Asia, specifically the Quảng Trị and Gia Lai provinces of Vietnam. They have tube-shaped nostrils (hence the name) which assist them with their feeding.