Gaucher V of Châtillon

Gaucher V de Châtillon
Blazon of Gaucher V de Châtillon Gules three pales vair a chief or.
Spouse(s)	Isabelle of Dreux Hélisende Vergy Isabelle of Rumigny
Issue Gaucher VI de Chatillon (1281–1325) Jean II de Chatillon (1283–1363) Joanna of Châtillon (c. 1285–1354) Hugues de Chatillon (1287–1336) Marie de Châtillon Isabelle de Châtillon
Noble family	House of Châtillon
Father	Gaucher de Chatillon IV (d. 1261), Lord of Chatillon
Mother	Isabelle of Villehardouin (d. 1329)
Born	c. 1249 Châtillon-sur-Marne
Died	1329

Gaucher V de Châtillon (born c. 1249 in Châtillon-sur-Marne, died in 1329), Lord of Châtillon, Count of Porcien, was constable of Champagne in 1284 and then Constable of France (1302–1329) during the reigns of five different kings. He was also tutor to the future Louis X of France and his primary minister.

Châtillon is a character in Les Rois maudits (The Accursed Kings), a series of French historical novels by Maurice Druon. He was played by Jean Chevrier in the 1972 French miniseries adaptation of the series, and by Wadeck Stanczak in the 2005 adaptation.