Korovin Island is one of the Shumagin Islands in the Gulf of Alaska south of the Alaska Peninsula in the Aleutians East Borough of Alaska, United States. The island lies northeast of Popof Island and across the Unga Strait from the mainland peninsula. To its southeast are Andronica Island, and further southeast, Nagai Island. Korovin island has a land area of 67.85 km2 and is uninhabited by humans.