| Coublanc | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Coublanc.svg |
| Arrondissement: | Langres |
| Canton: | Villegusien-le-Lac |
| Insee: | 52145 |
| Postal Code: | 52500 |
| Mayor: | Jérôme Clootens[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 47.6925°N 5.4603°W |
| Elevation M: | 323 |
| Area Km2: | 19.19 |
Coublanc (in French pronounced as /kublɑ̃/) is a commune in the Haute-Marne department in north-eastern France.