Frederick of Denmark or Frederik of Denmark may refer to: Frederick I of Denmark (1471–1533), King of Denmark and Norway Frederick II of Denmark (1534–1588), King of Denmark and Norway Frederick III of Denmark (1609–1670), King of Denmark and Norway Frederick IV of Denmark (1671–1730), King of Denmark and Norway Frederick V of Denmark (1723–1766), King of Denmark and Norway Frederick VI of Denmark (1768–1839), King of Denmark and Norway Frederick VII of Denmark (1808–1863), King of Denmark Frederick VIII of Denmark (1843–1912), King of Denmark Frederik IX (1899–1972), King of Denmark Frederik X (born 1968), King of Denmark Frederick of Denmark (bishop) (1532–1556) Frederick, Hereditary Prince of Denmark (1753–1805)