Sancey-le-Long (French pronunciation: [sɑ̃sɛ lə lɔ̃]) is a former commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.

On 1 January 2016, it was merged into the new commune Sancey.

[2] The commune lies 51 km (32 mi) east of Besançon near the Swiss border.

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