The Grand Cross of the Iron Cross (German: Großkreuz des Eisernen Kreuzes) was a decoration intended for victorious generals of the Prussian Army and its allies. It was the second highest class of the Iron Cross, following the Star of the Grand Cross of the Iron Cross, which was awarded only twice. Along with the Iron Cross 1st and 2nd Class, the Grand Cross was founded on 10 March 1813, during the Napoleonic Wars. It was renewed in 1870 for the Franco-Prussian War and again in 1914 for World War I. In 1939, when Adolf Hitler renewed the Iron Cross as a German (rather than strictly Prussian) decoration, he also renewed the Grand Cross.
The Grand Cross of the Iron Cross was twice the size of the Iron Cross and was worn from a ribbon around the neck. The later Knight's Cross of the Iron Cross, instituted in 1939, was also worn from the neck; it was smaller than the Grand Cross but larger than the Iron Cross.