William Sprague, American businessman and politician, 27th Governor of Rhode Island (d. 1915)

William Sprague IV (September 12, 1830 – September 11, 1915) was the 27th Governor of Rhode Island from 1860 to 1863, and U.S. Senator from 1863 to 1875. He participated in the First Battle of Bull Run during the American Civil War while he was a sitting Governor.