| Saint-Martin-de-Sescas | |
| Commune Status: | Commune |
| Arrondissement: | Langon |
| Canton: | L'Entre-Deux-Mers |
| Insee: | 33444 |
| Postal Code: | 33490 |
| Mayor: | Matthias Robine[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.5758°N -0.1614°W |
| Elevation M: | 39 |
| Elevation Min M: | 5 |
| Elevation Max M: | 114 |
| Area Km2: | 8.19 |
Saint-Martin-de-Sescas (Gascon: Sent Martin de Sescàs) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.