Châtillon-sur-Seine (French pronunciation: [ʃɑtijɔ̃ syʁ sɛn]) is a commune of the Côte-d'Or department, eastern France.

[3] The Musée du Pays Châtillonnais is housed in old abbey of Notre-Dame de Châtillon, within the town, known for its collection of pre-Roman and Roman relics (especially the famous Vix Grave).

In a fine park stands a modern château built by Marshal Marmont, duke of Ragusa, born at Châtillon in 1774.

[3] Châtillon anciently consisted of two parts, Chaumont, belonging to the duchy of Burgundy, and Bourg, ruled by the bishop of Langres; it did not coalesce into one town until the end of the 16th century.

Châtillon was one of the first cities to adhere to the League, but suffered severely from the oppression of its garrisons and governors, and in 1595 made voluntary submission to Henry IV.