William Whiteside

William Whiteside (November 5, 1881, in Marquette County, Michigan – ?), was a member of the Wisconsin State Assembly.

He later moved to Hurley, Wisconsin and worked as a machinist for U.S. Steel and Cleveland-Cliffs.

Whiteside was elected to the Assembly in 1912 as a Republican. He was previously elected as Treasurer of Iron County, Wisconsin in 1908 and as Sheriff in 1910.