| Montjoie-le-Château | |
| Commune Status: | Commune |
| Coordinates: | 47.3506°N 6.9025°W |
| Insee: | 25402 |
| Postal Code: | 25190 |
| Arrondissement: | Montbéliard |
| Canton: | Maîche |
| Mayor: | Claude Martelet[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 395 |
| Elevation Max M: | 773 |
| Area Km2: | 5.39 |
Montjoie-le-Château (in French pronounced as /mɔ̃ʒwa l(ə) ʃɑto/; German previously: Frohberg) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.