Walter Dickson Corrigan Sr. (December 28, 1875 – November 24, 1951) was an American lawyer and progressive Republican politician from Wisconsin.
He was a protégé of Wisconsin progressive leader Robert M. "Fighting Bob" La Follette.
Corrigan served as district attorney of Waushara County, Wisconsin, and was selected as a special prosecutor to try a 1929 civil campaign finance case against then-governor Walter J. Kohler Sr.—it was the only time a sitting Wisconsin governor was put on trial as a defendant.
[1] While attending Iowa State University, he was a star athlete in baseball and football, playing under coach Pop Warner.
Additionally, he was an unsuccessful candidate for the Wisconsin Supreme Court.