Prince Georg Friedrich of Waldeck was a German and Dutch Field Marshal and, for the last three years of his life, Grand Master of the Order of Saint John.

The Bailiwick of Brandenburg of the Chivalric Order of Saint John of the Hospital at Jerusalem, commonly known as the Order of Saint John or the Johanniter Order, is the German Protestant branch of the Knights Hospitaller, the oldest surviving chivalric order, which generally is considered to have been founded at Jerusalem in 1099.