Fleury-Mérogis (French pronunciation: [flœʁi meʁɔʒis] ⓘ) is a commune in the Essonne department in northern France, in the southern suburbs of Paris.

The commune has the Fleury-Mérogis Prison, France's and Europe's largest prison.

Inhabitants of Fleury-Mérogis are known as Floriacumois.

The commune has three groups of preschools (écoles maternelles) and elementary schools: Robert-Desnos, Paul-Langevin, and Joliot-Curie.

This Essonne geographical article is a stub.