Rana unculuanus Liu, Hu, and Yang, 1960 Chaparana unculuanus (Liu, Hu, and Yang, 1960) Paa unculuanus (Liu, Hu, and Yang, 1960) Nanorana unculuanus (common names: Yunnan Asian frog) is a species of frog in the family Dicroglossidae.

It is endemic to central and southern Yunnan, China, although it is expected to have wider distribution than currently known, possibly extending into Vietnam.

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.

[1] Nanorana unculuanus are medium-sized frogs: males grow to a snout–vent length of about 76 mm (3.0 in) and females to 79 mm (3.1 in).