Konrad Heiden (b. 7 August 1901 in München; d. 18 June 1966 in New York) was a Jewish journalist and political writer. He was a member of the Social Democratic Party (SPD) and opposed the rise of the NSDAP.
He worked for the liberal newspapers Frankfurter Zeitung and the Vossische Zeitung, from 1930 as a correspondent in Berlin, but became a freelancer in 1932. Upon the National Socialist victory in January 1933, he fled into exile; first to the Saar territory, then moved to Zürich in Switzerland from June to December 1933, and again to Saarbrücken where he published two writings on the coming Saar status referendum. After the vote in favour of National Socialist Germany in January 1935, he moved to France.
During the German occupation of France in 1940, he managed to escape to the United States via Lisbon. He arrived in New York City in late October. In 1944, Heiden published the biography Der Führer – Hitler's Rise to Power, released by Houghton Mifflin and reprinted by both the US Book of the Month Club and the UK Left Book Club.