| Saint-Martin-de-Laye | |
| Commune Status: | Commune |
| Arrondissement: | Libourne |
| Canton: | Le Nord-Libournais |
| Insee: | 33442 |
| Postal Code: | 33910 |
| Mayor: | Christophe Galan[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Libournais |
| Coordinates: | 45.0361°N -0.2267°W |
| Elevation M: | 17 |
| Elevation Min M: | 4 |
| Elevation Max M: | 81 |
| Area Km2: | 9.56 |
Saint-Martin-de-Laye is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France. Saint-Martin-de-Laye is also the birthplace of Élie, duc Decazes.