Spieden Island is a privately owned island in the San Juan Archipelago in the U.S. state of Washington. It has a land area of 516.4 acres (209.0 ha) and no permanent resident population as of the 2000 census, although several structures are present on various parts of the island. The island was purchased by James Jannard, founder and major shareholder of Oakley, Inc. in 1997 through a shell company and is still owned by him as of 2019.