William Darius Jamieson (November 9, 1873 – November 18, 1949) was a newspaper publisher and a Democratic U.S. Representative from Iowa's 8th congressional district. The only Democrat elected from that district in its ninety-year history, Jamieson served only a single term. He studied law at the National University Law School in Washington, D.C..Jamieson edited and published the Ida Grove Pioneer in 1893 and 1894, the Columbus Junction Gazette from 1899 to 1901, the Shenandoah World from 1901 to 1916, and was also editor of the Hamburg Democrat.