Gustav Adolf Steengracht von Moyland (15 November 1902 – 7 July 1969) was a German diplomat and politician of Dutch descent, who served as Nazi Germany's Secretary of State at the Foreign Office from 1943 to 1945.
He was born near Kleve, the son of Nicolaas Adriaan Steengracht van Moyland, a Dutch nobleman who received the title of Baron in 1888. Shortly after his birth, Moyland was made a naturalized citizen of Prussia and the German Empire in 1902.
He studied to become a lawyer. In 1935 Moyland became an assistant to Joachim von Ribbentrop, Nazi Germany's foreign minister.
After the war he was arrested as a war criminal. In 1949 he was tried by the Americans at Nuremberg. However, in January 1950 he was given amnesty and was freed from Landsberg Prison.
He spent the remainder of his life at his family castle, Schloss Moyland.