Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (23 October 1814 – 27 November 1885) was the third Duke of Schleswig-Holstein-Sonderburg-Glücksburg.^{[citation needed]} Friedrich was the second-eldest son of Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg and Princess Louise Caroline of Hesse-Kassel and an elder brother of Christian IX of Denmark.^{[citation needed]} Friedrich inherited the title of Duke of Schleswig-Holstein-Sonderburg-Glücksburg upon his childless brother Karl's death on 14 October 1878.^{[citation needed]}

Friedrich married Princess Adelheid of Schaumburg-Lippe, second-eldest daughter of George William, Prince of Schaumburg-Lippe and his wife Princess Ida of Waldeck and Pyrmont, on 16 October 1841 in Bückeburg, Schaumburg-Lippe.^{[citation needed]} Friedrich and Adelheid had five children:^{[citation needed]}

• Princess Marie Karoline Auguste Ida Luise of Schleswig-Holstein-Sonderburg-Glücksburg (27 February 1844 – 16 September 1932), married Prince William of Hesse-Philippsthal-Barchfeld.
• Friedrich Ferdinand Georg Christian Karl Wilhelm, Duke of Schleswig-Holstein (12 October 1855 – 21 January 1934).
• Princess Luise Karoline Juliane of Schleswig-Holstein-Sonderburg-Glücksburg (6 January 1858 – 2 July 1936), married George Victor, Prince of Waldeck and Pyrmont.
• Princess Marie Wilhelmine Luise Ida Friederike Mathilde Hermine of Schleswig-Holstein-Sonderburg-Glücksburg (31 August 1859 – 26 June 1941).
• Prince Albert Christian Adolf Karl Eugen of Schleswig-Holstein-Sonderburg-Glücksburg (15 March 1863 – 23 April 1948).

•  Denmark:^[1]
  • Grand Cross of the Dannebrog, 22 May 1840
  • Knight of the Elephant, 18 September 1843
  • Cross of Honour of the Order of the Dannebrog, 18 September 1843
• Ascanian duchies: Grand Cross of Albert the Bear, 7 November 1852^[2]
• Electorate of Hesse: Knight of the Golden Lion^[1]
•  Russian Empire: Knight of St. Anna, 1st Class^[1]