Prince Ulrik of Denmark (2 February 1611 - 12 August 1633, in Schweidnitz) was a son of King Christian IV of Denmark and his consort Queen Anne Catherine of Brandenburg. As the fourth-born son he bore the merely titular rank of Duke of Holstein and Schleswig, Stormarn and Ditmarsh. In 1624 Ulrik was appointed administrator of the Prince-Bishopric of Schwerin as Ulrich III. However, in 1628 Albrecht von Wallenstein's conquest of the prince-bishopric de facto deposed him. His father had to renounce all his family claims to prince-bishoprics in 1629. When in 1631 Swedish forces reconquered the prince-bishopric Ulrik failed to reascend as administrator.