| Plancher-Bas | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Plancher-Bas.svg |
| Coordinates: | 47.7219°N 6.7336°W |
| Insee: | 70413 |
| Postal Code: | 70290 |
| Arrondissement: | Lure |
| Canton: | Héricourt-1 |
| Mayor: | Luc Sengler[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 366 |
| Elevation Max M: | 850 |
| Area Km2: | 29.12 |
Plancher-Bas is a commune in the Haute-Saône department in the region of Bourgogne-Franche-Comté in eastern France.