Count Christian Frederik Franz Knud Harald Carl Oluf Gustav Georg Erik of Rosenborg (22 October 1942 – 21 May 2013) was a member of the Danish royal family. Born Prince Christian of Denmark, he was high in the line of succession until the constitution was changed in 1953 to allow females to inherit the crown, placing his branch of the dynasty behind that of his cousin Margrethe and her two younger sisters. He later gave up his princely rank and his rights to the throne in order to marry a commoner.

He was born at Sorgenfri Palace, Sorgenfri, as the younger son of Hereditary Prince Knud by his wife and first cousin, Princess Caroline-Mathilde of Denmark.

From the death of his grandfather in 1947, Christian stood only behind his father and elder brother Prince Ingolf in the order of hereditary succession to the throne, with only future children of Ingolf possibly taking a place ahead of him. His father Prince Knud was then the heir presumptive, due to succeed Christian's uncle King Frederick IX, who had three daughters but no sons.

In 1953, the Constitution of Denmark was amended to allow cognatic primogeniture. The new law made thirteen-year-old Princess Margrethe the new heiress presumptive, placing her and her two sisters before Prince Knud and his family in the succession. Christian was thus relegated to sixth in the line of succession to the Danish throne, but more importantly, he then ranked behind Margrethe and others who were likely to have dynastic children of their own (as has, in fact, happened). The princess became Queen Margrethe II in 1972 and is still reigning. Christian's place in the line of succession, if he had been still eligible, would have been no higher than thirteenth in 2013.

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