Hammerstein is the name of an ancient German noble family originated from Burg Hammerstein in Rhineland-Palatinate. Members of the family held the title of Baron. Three lines of the family existed: Hammerstein-Equord, Hammerstein-Gesmold and Hammerstein-Loxten. Hammerstein is also a German surname.

Notable members Arthur Hammerstein (1872–1955), American opera producer Carl-Detlev Freiherr von Hammerstein (born 1938), German farmer and politician (CDU) David Hammerstein Mintz (born 1955), Spanish politician Dorothy Hammerstein (1899–1987), Australian-American interior designer and decorator Elaine Hammerstein (1897–1948), American actress Ernst von Hammerstein-Loxten (1827–1914), German lawyer and politician Hans von Hammerstein-Loxten (1843–1905), German civil servant and politician James Hammerstein (1931–1999), American theatre director and producer Jane-Howard Hammerstein (1934–2022), American screenwriter Marie Luise von Hammerstein (1908–1999), German lawyer Mike Hammerstein (born 1963), American football player Notker Hammerstein (1930–2024), German historian Oscar Hammerstein I (1847–1919), German-American theatre impresario Oscar Hammerstein II (1895–1960), American songwriter and musical director Oscar Hammerstein (lawyer) (born 1954), Dutch lawyer Reinhold Hammerstein (1915–2010), German musicologist Stella Hammerstein (1882–1975), American actress Wilhelm Joachim von Hammerstein (1838–1904), German politician Willie Hammerstein (1875–1914), American theatre manager

See also Kurt von Hammerstein-Equord (1878–1943), German general

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