Bruyères-le-Châtel is a town and a commune in the Essonne département, in the French region of Île-de-France.
A nunnery was founded at Bruyères-le-Châtel by a noblewoman named Clotilde
. The charter endowing the monastery is dated to 10 March 673
and is among the oldest original private charters which survive from Merovingian Francia
At the 1999 census
, the population was . The estimate for 2005 was .
Inhabitants of Bruyères-le-Châtel are known as Bruyérois.