Korean brown frog
 The Korean brown frog (Rana coreana) is a species of frog in the genus Rana. It is native to the Korean Peninsula. It is the smallest of brown frogs in Korea with males reaching up to 38 mm (1.5 in) and females to 44 mm (1.7 in) in snout-vent length.The Korean brown frog has earlier mostly been considered as subspecies of Rana amurensis that is R. a. coreana. However recent morphological and genetic analyses support its status as a distinct species though closely related to R. amurensis.