| Preignac | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Preignac (Gironde).svg |
| Arrondissement: | Langon |
| Canton: | Les Landes des Graves |
| Insee: | 33337 |
| Postal Code: | 33210 |
| Mayor: | Thomas Filliatre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Convergence Garonne |
| Coordinates: | 44.5858°N -0.2942°W |
| Elevation M: | 15 |
| Elevation Min M: | 2 |
| Elevation Max M: | 59 |
| Area Km2: | 13.26 |
Preignac (pronounced as /fr/) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.
Preignac is located in the Sauternes wine appellation of Bordeaux. Preignac station has rail connections to Langon and Bordeaux.