M. orientalis

M. orientalis may refer to:
 * Malus orientalis, the eastern crabapple
 * Meliphaga orientalis, the Mountain honeyeater, a bird species found in Indonesia and Papua New Guinea
 * Melogale orientalis, the Javan ferret-badger, a mammal species endemic to Java, Indonesia
 * Merops orientalis, the green bee-eater or little green bee-eater, a bird species found widely distributed across sub-Saharan Africa
 * Millettia orientalis, a legume species found only in Madagascar
 * Mitra orientalis, a sea snail species
 * Mogurnda orientalis, the eastern mogurnda, a fish species endemic to Papua New Guinea
 * Mouldingia orientalis, an air-breathing land snail species endemic to Australia
 * Myurella orientalis, a sea snail species