Prince Frederick, Frederik or Friedrich may refer to:
People
Friedrich Ludwig, Hereditary Prince of Württemberg (1698–1731), son of Duke Eberhard Ludwig of Württemberg
Frédéric Prinz von Anhalt (born 1943), German-American socialite
Frederick III of Denmark (1609–1670), son of Christian IV of Denmark and Anne Catherine of Brandenburg
Frederick VIII of Denmark (1843–1912), son of Christian IX of Denmark
Frederik IX of Denmark (1899–1972), son of Christian X and father of Margaret II of Denmark
Frederik X of Denmark (born 1968), son of Queen Margrethe II and her husband, Prince Consort Henrik
Frederick Henry, Prince of Orange (1584–1647), Stadtholder of Holland
Frederick, Hereditary Prince of Anhalt-Dessau (1769–1814), son of Leopold III, Duke of Anhalt-Dessau
Frederick, Prince of Anhalt-Harzgerode (1613–1670)
Frederick, Hereditary Prince of Denmark (1753–1805), son of Frederick V of Denmark
Frederick, Prince of Wales (1707–1751), son of George II, later Prince of Wales
Prince Frederick, Duke of York and Albany (1763–1827), son of George III, later Duke of York
Prince Frederick of Great Britain (1750–1765), son of Frederick, Prince of Wales
Prince Friedrich of Hesse and by Rhine (1870–1873), son of Grand Duke Louis IV
Prince Frederik of Hesse (1771–1845), Governor-general of Norway.
Prince Frederick of Hesse-Kassel (1747–1837), youngest son of Prince Frederick (1720–1785)
Frederick, Prince of Hohenzollern (1891–1965), son of Prince William
Prince Frederick of Hohenzollern-Sigmaringen (1843–1904), son of Prince Charles Anthony of Hohenzollern
Prince Frederik of Nassau (2002–2025), son of Prince Robert of Luxembourg
Prince Frederick of Orange-Nassau (1774–1799), son of Prince William V
Prince Frederick of Prussia (1794–1863), son of Prince Louis Charles of Prussia
Prince Frederick of Prussia (1911–1966), son of Crown Prince Wilhelm of Germany
Prince Friedrich of Saxe-Meiningen (1861–1914), son of Duke Georg II
Prince Frederick of Schaumburg-Lippe (1868–1945), son of Prince William
Prince Frederick of Schleswig-Holstein-Sonderburg-Augustenburg (1800–1865), son of Duke Frederick Christian II
Prince Frederik of the Netherlands (1797–1881), second son of King William I of the Netherlands
Prince Frederick of Württemberg (1808–1870), son of Prince Paul
Prince Frederick Adolf, Duke of Östergötland (1750–1803), son of King Adolf Frederick
Prince Frederick Augustus of Anhalt-Dessau (1799–1864), son of Frederick, Hereditary Prince of Anhalt-Dessau
Frederick Augustus, Prince of Anhalt-Zerbst (1734–1793)
Prince Frederick Charles of Hesse (1868–1940), son of Prince Frederick William of Hesse-Kassel and briefly King of Finland
Prince Frederick Charles of Prussia (1801–1883), son of King Frederick William III
Prince Friedrich Christian of Schaumburg-Lippe (1906–1983), son of Prince Georg
Prince Frederick Ferdinand Constantin of Saxe-Weimar-Eisenach (1758–1793), son of Duke Ernest Augustus II
Prince Friedrich Franz Xaver of Hohenzollern-Hechingen (1757–1844), an Austrian general
Prince Friedrich Heinrich Albrecht of Prussia, (1874–1940), son of Prince Albert (1837–1906)
Prince Frederick Henry Eugen of Anhalt-Dessau (1707–1781), son of Prince Leopold I
Prince Friedrich Karl of Prussia (1828–1885), son of Prince Charles
Prince Friedrich Karl of Prussia (1893–1917), son of Prince Friedrich Leopold
Prince Friedrich Leopold of Prussia (1865–1931), son of Prince Friedrich Karl (1828–1885)
Prince Friedrich Leopold of Prussia (1895–1959), son of Prince Friedrich Leopold (1865–1931)
Frederick Louis, Prince of Hohenlohe-Ingelfingen (1746–1818)
Prince Friedrich Sigismund of Prussia (1891–1927), son of Prince Friedrich Leopold
Friedrich Wilhelm (1924–2010), son of Prince Frederick
Prince Friedrich Wilhelm of Lippe (born 1947), son of Prince Ernst August
Prince Friedrich Wilhelm of Prussia (1880–1925), son of Prince Albert (1837–1906)
Prince Frederick William of Hesse-Kassel (1820–1884), son of Prince Frederick (1747–1837)
Prince Frederick William of Schleswig-Holstein-Sonderburg-Augustenburg (1668–1714), son of Duke Ernest Günther
Prince Frederick William of Solms-Braunfels (1770–1814), son of Prince Ferdinand
Other uses
Prince Frederick Harbour, in York Sound, Western Australia
Prince Frederick, Maryland, a town in the United States
Prince Frederick Sound in southern Alaska
HMS Prince Frederick, several ships of the Royal Navy