Bailly-Romainvilliers (French: [baji ʁɔmɛ̃vilje] ⓘ) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.

The inhabitants of the town of Bailly-Romainvilliers are called Romainvillersois, Romainvillersoises in French.

The shopping precinct is home to a bakery, parking facilities and a Carrefour Market supermarket.

The community has three primary schools, Alizés, Coloriades, and Girandoles;[5] as well as one junior high school, Collège Les Blés d'Or.

[6] Lycée Émilie du Châtelet, the area senior high school/sixth-form college, is in nearby Serris.