Armand de Vignerot du Plessis (13 March 1696 – 8 August 1788) was a French soldier, diplomat and statesman. Joining the army, he participated in three major wars and eventually rose to the rank of Marshal of France. He was the son of Armand Jean de Vignerot du Plessis, Duke of Richelieu, who in turn was a great-nephew of the prominent French statesman, Cardinal de Richelieu who had dominated France in the early 17th century.