Chézy may refer to:
People Antoine de Chézy (1718–1798), French hydraulic engineer Antoine-Léonard de Chézy (1773–1832), French orientalist Helmina von Chézy (1783–1856), German journalist, poet and playwright
Communes in France Chézy, Allier, in the Allier department Chézy-en-Orxois, in the Aisne department Chézy-sur-Marne, in the Aisne department
Other Chézy formula, for river flows