Harold Christian Hagen (November 10, 1901 – March 19, 1957) was a Minnesota politician.

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 Polk County Leader in Crookston.

Succeeding Buckler, Hagen was elected as a candidate of the Farmer-Labor Party to the House of Representatives, representing Minnesota's 9th congressional district.

After his defeat in the United States House election, 1954, Hagen worked in Washington, D.C.'s public relations business.