Frederick IV of Liegnitz

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Frederick IV
Duke of Legnica
Frederick IV, Duke of Legnica, engraving by Bartholomäus Strachowsky, 1733
Born	20 April 1552
Died	27 March 1596
Noble family	Silesian Piasts
Spouse(s)	Maria Sidonia of Cieszyn Dorothea of Schleswig-Holstein-Sonderburg Anna of Württemberg
Father	Frederick III of Legnica
Mother	Katharina of Mecklenburg

Frederick IV, Duke of Legnica (20 April 1552 – 27 March 1596) was Duke of Legnica from 1571 until his death (as a co-ruler of his elder brother during 1571–1576 and 1580–1581).

He was the third but second surviving son of Frederick III, Duke of Liegnitz, by his wife Katharina, daughter of Henry V, Duke of Mecklenburg. He was named after his brother Frederick, who died in 1551, one year before his birth.