John Williams Gwynne (October 20, 1889 – July 5, 1972) was a seven-term Republican U.S. Representative from Iowa's 3rd congressional district, and a Federal Trade Commission member and chairman during the Eisenhower Administration.

Born in Victor, Iowa, on October 20, 1889, Gwynne attended public schools.

During the First World War, Gwynne served as a second lieutenant in the 313th Trench Mortar Battery of the United States Army's 88th Infantry Division, from 1917 to 1919.

Gross, a popular radio news commentator, defeated Gwynne's bid for the Republican nomination.

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