Green flow in the south of Paris

Châtillon (French pronunciation: ​[ʃɑ.ti.jɔ̃]) is a commune in the southwestern suburbs of Paris, France. It is located 7 km (4.3 mi) from the center of Paris.The town was formerly named Châtillon-sous-Bagneux, and a relic of this denomination remains in at least one road sign in Vanves (located at the junction Boulevard du Lycée and Avenue Charles de Gaulle, and written as Châtillon s/ B).

The Battle of Châtillon was the third sortie by French forces attempting to relieve the siege of Paris by the Prussian-led German armies. The French Army forced the Bavarians from the western outskirts of Paris but were later driven back in the face of Prussian artillery.

The canton of Bagneux is a French administrative division, located in the arrondissement of Antony, in the Hauts-de-Seine département (Île-de-France région). Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Bagneux.