Breuillet (French: [bʁøjɛ] ⓘ) is a commune in the Essonne department in Île-de-France in northern France.

It is located between Arpajon and Dourdan.

Inhabitants of Breuillet are known as Breuilletois in French.

Breuillet has town twinning and cooperation agreement with:

This Essonne geographical article is a stub.