| Colmier-le-Bas | |
| Commune Status: | Commune |
| Arrondissement: | Langres |
| Canton: | Villegusien-le-Lac |
| Insee: | 52137 |
| Postal Code: | 52160 |
| Mayor: | Michel Renard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Auberive Vingeanne et Montsaugeonnais |
| Coordinates: | 47.7725°N 4.9531°W |
| Elevation M: | 402 |
| Elevation Min M: | 308 |
| Elevation Max M: | 446 |
| Area Km2: | 5.95 |
Colmier-le-Bas (pronounced as /fr/) is a commune in the Haute-Marne department in north-eastern France.