Le Mesnil-Saint-Denis (French pronunciation: [lə menil sɛ̃ dəni] ⓘ) is a commune in the Yvelines department in the Île-de-France region in north-central France.

The commune has two public preschools, Maternelle de Champmesnil and Maternelle du Bois du Fay,[5] as well as two public elementary schools, Élémentaire de Champmesnil and Élémentaire du Bois du Fay.

[6] It also hosts two junior high schools, the public Collège Philippe de Champaigne and the private Collège privé Saint Thérèse.

[7] Collège Philippe de Champaigne also serves residents of La Verrière.

This Yvelines geographical article is a stub.