François Joseph Lefebvre, Duke of Danzig, was a French military commander of the French Revolutionary Wars and the Napoleonic Wars, and one of the original eighteen Marshals of the Empire created by Napoleon.

Marshal of the Empire was a civil dignity during the First French Empire. It was created by Sénatus-consulte on 18 May 1804 and to a large extent reinstated the formerly abolished title of Marshal of France. According to the Sénatus-consulte, a Marshal was a grand officer of the Empire, entitled to a high-standing position at the court and to the presidency of an electoral college.