The Ryukyu black-breasted leaf turtle or Ryukyu leaf turtle, "Geoemyda japonica", is a species of turtle in the family Geoemydidae (formerly Bataguridae) endemic to the Ryukyu Islands in Japan. In 1975, the species was designated a National Natural Monument of Japan. It grows to about 5–6 inches long. In captivity, it feeds on worms, snails, insects, and fruit. Due to its rarity and very attractive appearance, this species is highly sought-after by turtle collectors worldwide.