Atrophaneura semperi is a species of butterfly from the family Papilionidae that is found in Indonesia, Malaysia, and the Philippines. It is the type species for the genus. The wingspan is 12–15 cm. The wings are black. The body has red hairs. The underside of the hindwings contain some red markings. Females are dark brown with light pink markings on the upside of the wings. The larvae feed on Aristolochia species.