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Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (23 October 1814 in Schleswig, Schleswig – 27 November 1885 in Luisenlund, Schleswig-Holstein, Prussia, Germany) was the third Duke of Schleswig-Holstein-Sonderburg-Glücksburg. 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. Friedrich inherited the title of Duke of Schleswig-Holstein-Sonderburg-Glücksburg upon his childless brother Karl's death on 14 October 1878.