| Montancy | |
| Commune Status: | Commune |
| Coordinates: | 47.3472°N 7.0478°W |
| Insee: | 25386 |
| Postal Code: | 25190 |
| Arrondissement: | Montbéliard |
| Canton: | Maîche |
| Mayor: | Nicolas Jubin[1] |
| Term: | 2023 - 2026 |
| Elevation Min M: | 410 |
| Elevation Max M: | 920 |
| Area Km2: | 8.86 |
Montancy (pronounced as /fr/; unofficial also Montancy-Brémoncourt) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.
The commune lies 23km (14miles) east of Saint-Hippolyte at the east end of the department near the Swiss border. The village of Brémoncourt lies in the valley of the Doubs at 430 m, and Montancy on the plateau at 900 m.