Karl Friedrich
Karl Friedrich may refer to:
Karl Friedrich, Grand Duke of Baden (1728–1811)
Karl Friedrich, Duke of Holstein-Gottorp (1700–1739)
Karl Friedrich, Duke of Saxe-Meiningen (1712–1743)
Karl Friedrich, Prince of Hohenzollern (born 1952)
Karl Friedrich (tenor) (1905–1981)
Karl Friedrich, Prince of Hohenzollern-Sigmaringen (1724–1785)
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