Henry II of Holstein-Rendsburg

Henry II (c. 1317–c. 1384), called Iron Henry, was the elder son of Count Gerhard III of Holstein-Rendsburg and Sophia of Werle. After his father's murder in 1340 he ruled the county jointly with his younger brother Nicholas, pressing their claims in Schleswig against Denmark.

A famed mercenary captain, in 1367 he commanded a Hanseatic League fleet and in 1368 captured Copenhagen. By his second wife Ingeborg he fathered Gerhard VI, later Duke of Schleswig.