Georg Johannes Rickhey (25 August 1898 in Hildesheim - 1966) was a German engineer and the general director of Mittelwerk GmbH in Dora-Mittelbau.
Rickhey, a doctor of engineering, joined the Nazi Party in October 1931 as member number 664,050. During the Second World War he held a number of positions with the Reichsministerium für Bewaffnung und Munition (Reich Ministry for Armament and Munitions) before becoming manager of Demag, a tank production company, in 1942. He became head of Mittelwerk GmbH in Dora-Mittelbau from April 1944, overseeing production of the V-1 flying bomb and V-2 rocket. His work on these weapons saw him awarded the War Merit Cross along with Walter Dornberger and Wernher von Braun.
Arrested in 1945, he was taken by the U.S. Army to live at Wright-Patterson Air Force Base, Ohio where he worked under the terms of Operation Paperclip. He was subsequently indicted as part of the Dachau Trials of 1947 under accusations that he had worked closely with the SS and Gestapo and witnessed executions. A lack of evidence however saw Rickhey acquitted. He subsequently returned to his work in the United States.