Buck Island may refer to:
Buck Island Reef National Monument near Saint Croix, U.S. Virgin Islands Buck Island National Wildlife Refuge near Saint Thomas, U.S. Virgin Islands Buck Island (British Virgin Islands) Buck Island (Oregon) in Upper Klamath Lake, Oregon Buck Island (Washington), one of the San Juan Islands, Washington Buck Island, County Fermanagh, a townland in Belleek, County Fermanagh, Northern Ireland