Diamond Island may refer to:
Islands Diamond Island (Myanmar) Diamond Island (Cambodia), an island in the Mekong river Diamond Island (Grenadines) Diamond Island (Tasmania) Diamond Island (Kentucky) Diamond Island (New York), an island on Lake George (New York) Diamond Island (Montana), an island in the Yellowstone River Diamond Island (Tennessee) Diamond Island (Vermont), an island in Lake Champlain
Other uses Diamond Island (film), 2016
See also Great Diamond Island, Maine Little Diamond Island, Maine Diamond Rock, Martinique, a basalt island