Kalophrynus menglienicus is a species of frog in the Microhylidae family. It is known from the vicinity of its type locality in Menglian County in southern Yunnnan, China, and from northern Vietnam; it is likely to occur in adjacent Myanmar and northern Laos. Common names Menglien grainy frog, Menglien narrow-mouthed frog, and Menglien dwarf sticky frog have been coined for this species, in reference to the type locality, as is the specific name menglienicus.