The dark-spotted frog, or black-spotted frog (Pelophylax nigromaculatus, formerly Rana nigromaculata), is a species of true frog found in East Asia. It occurs across much of eastern and northeastern China, the Amur River valley in Russia, the Korean Peninsula, and most of Japan, although it does not occur on Hokkaidō. It has been considered the commonest of the true frogs on the Korean Peninsula, and has been hunted for food and used as an experimental animal. There is an introduced population in Turkmenistan. Parasites of this frog include the opalinid Protoopalina pingi, in the rectum.