Erich Johann Albert Raeder was a German admiral who played a major role in the naval history of World War II, and was convicted of war crimes after the war. Raeder attained the highest possible naval rank, that of grand admiral, in 1939, becoming the first person to hold that rank since Henning von Holtzendorff in 1918. Raeder led the Kriegsmarine for the first half of the war; he resigned in January 1943 and was replaced by Karl Dönitz. At the Nuremberg trials he was sentenced to life imprisonment but was released early owing to failing health in 1955.

Grand admiral is a historic naval rank, the highest rank in the several European navies that used it. It is best known for its use in Germany as Großadmiral. A comparable rank in modern navies is that of admiral of the fleet.