William Craig Cooper (December 18, 1832 – August 29, 1902) was an American lawyer, Civil War veteran, and politician who served three terms as a U.S. Representative from Ohio from 1885 to 1891.

He was admitted to the bar in 1852 and commenced practice in Mount Vernon, Ohio.

During the American Civil War, Cooper was colonel of the 142nd Ohio Infantry, a 100 days regiment.

He resumed the practice of law in Mount Vernon, Ohio, where he died on August 29, 1902.

This article incorporates public domain material from the Biographical Directory of the United States Congress