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