| Lamarque | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lamarque (Gironde).svg |
| Arrondissement: | Lesparre-Médoc |
| Canton: | Le Sud-Médoc |
| Insee: | 33220 |
| Postal Code: | 33460 |
| Mayor: | Dominique Saint-Martin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Médoc Estuaire |
| Coordinates: | 45.0969°N -0.7167°W |
| Elevation M: | 6 |
| Elevation Min M: | 0 |
| Elevation Max M: | 19 |
| Area Km2: | 8.91 |
Lamarque (in French pronounced as /lamaʁk/; Gascon: La Marca) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France. It lies in the Médoc, on the left bank of the Gironde estuary. A small car ferry crosses the estuary to Blaye.