Grouchy (or de Grouchy) is a French surname.
Jean de Grouchy (1354 - 1435), knight at the time of the Hundred Years' War,
Johannes de Grocheio (Johannes de Grocheio) (c. 1255 - c. 1320), a French musical theorist,
Sophie de Condorcet (Sophie de Condorcet) (1764 - 1822), French writer and wife of Nicolas de Condorcet,
Emmanuel de Grouchy (1768-1847), soldier and Marshal of France