The name Washington Island refers to:
Washington Island (Wisconsin), the largest of the islands that make up the Town of Washington in Door County, Wisconsin Washington Island (Michigan) in Keweenaw County, Michigan Washington Island (Minnesota) in Lake County, Minnesota Washington Island (New York) in Jefferson County, New York Teraina, also known as Washington Island, Kiribati Washington Islands Wilderness in Washington state An 18th-century name for Ua Huka, later extended as the "Washington Islands" to include all of the northern Marquesas Islands