Chasnans (French pronunciation: [ʃanɑ̃]) is a former commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.

On 1 January 2016, Athose, Chasnans, Hautepierre-le-Châtelet, Nods, Rantechaux and Vanclans merged becoming one commune called Les Premiers-Sapins.

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