Henry A. Patterson was a member of the Wisconsin State Assembly.
Patterson was born on June 8, 1829 in Lindley, New York. He attended Genesee Wesleyan Seminary. In 1855, Patterson moved to Janesville, Wisconsin. There he formed law partnership with David Noggle and Charles G. Williams. He died on September 26, 1901.
Patterson was a member of the Wisconsin State Assembly during the 1873 session. He was defeated for re-election by John Winans. Patterson was District Attorney of Rock County, Wisconsin, Postmaster of Janesville, a municipal court judge, and a justice of the peace. He was a Republican.