Chaffois () is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.
It is located about west of Pontarlier and about west of the border with Switzerland.
This village in the Haut-Doubs region is located at an altitude of approximately 850 meters, about seven kilometers west of the town of Pontarlier.
The neighboring towns are Bannans, Chapelle-d'Huin, Granges-Narboz, Houtaud, Sainte-Colombe, and Val-d'Usiers.