Nanorana unculuanus (common names: Yunnan Asian frog) is a species of frog in the Dicroglossidae family.It is endemic to Yunnan, China, although it is expected to have wider distribution than currently known, possibly extending into Vietnam.Its natural habitats are fast-flowing hill streams and riparian habitats in forests and grasslands, but also man-made habitats like roadside drainage ditches and ponds. It is a rare and secretive species that appears to be declining. It is currently threatened by collection for food and also by habitat loss.