The Arnhem Leaf-nosed Bat (Hipposideros inornatus) is an insectivorous microbat that is known from only a few localities. It roosts in caves in very remote sandstone escarpment country in western Arnhem Land, in the Northern Territory of Australia. At night it forages for food such as beetles, moths and cockroaches in nearby vegetated areas. This is the holotype, or name bearing, specimen used to describe the species.