Wilhelm, Count of Schaumburg-Lippe-Bückeburg (January 9, 1724 – September 10, 1777), born Friedrich Wilhelm Ernst Graf zu Schaumburg-Lippe-Bückeburg, is a German ruler of the County of Schaumburg-Lippe-Bückeburg, an important military commander in the Seven Years' War, Generalfeldzeugmeister of the Electorate of Brunswick-Lüneburg, and British field marshal (Generalfeldmarschall).