A brown skin spot developed on the berries of Japanese grape cultivar Shine Muscat during storage at 0 A degrees C for 3 months. The fungus isolated from these skin spots was identified as Cadophora luteo-olivacea based on the sequence of its ribosomal DNA internal transcribed spacer region. Morphological and culture characteristics corresponded to those reported previously from C. luteo-olivacea; this fungus also reproduced the same symptoms after inoculation and was reisolated from the symptomatic spots. This is the first report of a postharvest disease of grape caused by C. luteo-olivacea.