Villebon-sur-Yvette (French pronunciation: [vilbɔ̃ syʁ ivɛt] ⓘ, literally Villebon on Yvette) is a commune in the Essonne department in Île-de-France in northern France, about 20 kilometres (12 mi) south of Paris.

Villebon-sur-Yvette is located in the Hurepoix area on the river Yvette, in the valley of the same name (also called Vallée de Chevreuse) on ground that is composed of milled stone, sand and clay.

In 1512, Augustin of Thou had built in place of the existing residence a small Renaissance-style castle, today known as Henri IV House.

The introduction of a rail-link to Paris at the beginning of the 20th century allowed Villebon, like its neighbors, to develop its industry and reputation as a tourist destination for Parisians.

On 23 June 1920, the real estate company the School of Île-de-France, represented by Mr. Hawkins, a former pupil of the University of Cambridge acquired the castle, its dependences and the surrounding 100 hectares of forest and meadows for one million francs.