John Robert Hansen (August 24, 1901 – September 23, 1974) served one term, from January 3, 1965 to January 3, 1967, as a Democratic U.S. Representative from Iowa. Until the election of Cindy Axne in 2018, he and Tom Harkin were the only two Democrats to have represented southwestern Iowa in the U.S. House since the end of the Great Depression.