| Bligny-le-Sec | |
| Commune Status: | Commune |
| Arrondissement: | Dijon |
| Canton: | Fontaine-lès-Dijon |
| Insee: | 21085 |
| Postal Code: | 21440 |
| Mayor: | Jean-Charles Baudion[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 47.4447°N 4.7425°W |
| Elevation M: | 550 |
| Elevation Min M: | 458 |
| Elevation Max M: | 579 |
| Area Km2: | 16.61 |
Bligny-le-Sec (pronounced as /fr/) is a commune in the Côte-d'Or department in eastern France.