Carl-Detlev Freiherr von Hammerstein (born 26 January 1938 in Bockel) is a German politician and farmer.
He was member of an old Hammerstein family, that, prior to 1919, belonged to German nobility.
He has been a member of the Christian Democratic Union of Germany (CDU) in Rotenburg, Germany since 1975, and a member of the German federal parliament representing the CDU from 1983 to 1987.
He was married to Lily Gräfin von der Schulenburg (1937–2015), and has three children.
This biography article about a member of the Christian Democratic Union of Germany (CDU) is a stub.