Aunou-sur-Orne is a commune in the Orne department in northwestern France.
In 1811 Aunou-sur-Orne absorbed the neighbouring commune of Saint-Cenery-près-Séez (sometimes spelled Saint-Cénery-près-Sées or Saint-Céneri-près-Sées).
Nicolas-Jacques Conté (4 August 1755 – 6 December 1805) was a French painter, balloonist, army officer, and inventor of the modern pencil. He was born at Saint-Céneri-près-Sées.