Harold Christian Hagen (November 10, 1901 – March 19, 1957) was a Minnesota politician. He was a Farmer-Laborite and then a Republican, serving the ninth district from 1943 to 1955. Born in Crookston, Minnesota, he was Lutheran of Norwegian ancestry. He attended St. Olaf College and then began as a publisher and editor of a Norwegian language newspaper and publisher of the in Crookston.