1848–1849: Friedrich Ludwig von Rönne (October 1848 - December 1849; (January 26 - December 21, 1849) simultaneously "Envoy Extraordinary and Minister Plenipotentiary for the Central Government of Germany" i.e., the Frankfurt Parliament)
1937–1938: Hans-Heinrich Dieckhoff, recalled November 18, 1938 in response to worsening relations with the U.S. due to Kristallnacht (November 9), and the U.S. recall of its Ambassador (November 15).
Diplomatic relations broken off due to World War II (December 11, 1941 – September 22, 1949)
Ambassadors of the Federal Republic of Germany to the U.S.
1951–1958: Heinrich Krekeler (20 July 1906 – 5 August 2003), (June 1950 – June 1951: Consul General, June 1951 – May 1955: Chargé d'Affaires, May 1955 – January 1958: Ambassador)
1958–1962: Wilhelm Grewe (16 October 1911 – 11 January 2000) (February 1958 – May 1962)