Leptobrachella natunae (sometimes known as the Natuna Borneo frog or Natuna Island frog) is a species of amphibian in the family Megophryidae. It is endemic to Natuna Besar in the Natuna Islands (Indonesia) of South China Sea.[1] It has not been recorded after its description, more than a century ago. Its natural habitats are tropical moist lowland forests and rivers.