Ginseng anthracnose was observed in Koyang area, Korea. A fungus was repeatedly isolated from leaves and stems of the infected ginseng plants and identified as Colletotrichum dematium according to the morphological and cultural characteristics. The fungus showed pathogenicity on inoculated ginseng leaves. This is the first report of ginseng anthracnose caused by Colletotrichum dematium in Korea.