Saint-Michel-sur-Orge (French pronunciation: [sɛ̃ miʃɛl syʁ ɔʁʒ] ⓘ, literally Saint-Michel on Orge) is a commune in the Essonne département of France.

Inhabitants of Saint-Michel-sur-Orge are known as Saint-Michellois.

Saint-Michel-sur-Orge is served by Saint-Michel-sur-Orge station on Paris RER line C. The 401 bus line connects Saint-Michel-sur-Orge to Évry, the capital of the department.

There are eight primary schools in the commune.

This Essonne geographical article is a stub.