Edmund John Stack (January 31, 1874 – April 12, 1957) was a U.S. Representative from Illinois.

He was graduated from the law department of Lake Forest (Illinois) University in 1895.

He was admitted to the bar the same year and commenced the practice of his profession in Chicago, Illinois.

He was appointed assistant corporation counsel of Chicago and, later, chief trial attorney.

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