| La Serre | |
| Commune Status: | Commune |
| Arrondissement: | Millau |
| Canton: | Causses-Rougiers |
| Insee: | 12269 |
| Postal Code: | 12380 |
| Mayor: | Franck Couderc[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.8858°N 2.6825°W |
| Elevation M: | 650 |
| Elevation Min M: | 398 |
| Elevation Max M: | 668 |
| Area Km2: | 18.52 |
La Serre (in French pronounced as /la sɛʁ/; Occitan (post 1500);: La Sèrra) is a commune in the Aveyron department in southern France.
The GSSP Golden Spike for the Tournaisian is in La Serre, with the first appearance of the conodont Siphonodella sulcata. In 2006 it was discovered that this GSSP has biostratigraphic problems.