| Léognan | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Léognan (Gironde).svg |
| Arrondissement: | Bordeaux |
| Canton: | La Brède |
| Insee: | 33238 |
| Postal Code: | 33850 |
| Mayor: | Laurent Barban[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Montesquieu |
| Coordinates: | 44.7294°N -0.5997°W |
| Elevation M: | 50 |
| Elevation Min M: | 13 |
| Elevation Max M: | 62 |
| Area Km2: | 41.43 |
Léognan (in French pronounced as /leɔɲɑ̃/; Occitan (post 1500);: Leunhan) is a commune in the Gironde department, Nouvelle-Aquitaine, southwestern France.
Its inhabitants are called Léognanais.
It is located in the Graves area of the Bordeaux county, known for its red wine (Pessac-Léognan appellation):
The processing plant for Cacolac has been located here since 2000.