Quincy-sous-Sénart (French pronunciation: [kɛ̃si su senaʁ] , literally Quincy under Sénart) is a commune in the Essonne department in Île-de-France in northern France. The palaeographer and archivist Robert Marichal (1904–1999) died in Quincy-sous-Sénart.
Inhabitants of Quincy-sous-Sénart are known as Quincéens in French.
Quincy-sous-Sénart is twinned with:
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