| Saint-Martin-du-Bec | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Martin-du-bec.svg |
| Arrondissement: | Le Havre |
| Canton: | Octeville-sur-Mer |
| Insee: | 76615 |
| Postal Code: | 76133 |
| Mayor: | Nicolas Simon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Le Havre Seine Métropole |
| Coordinates: | 49.6031°N 0.2108°W |
| Elevation M: | 80 |
| Elevation Min M: | 44 |
| Elevation Max M: | 106 |
| Area Km2: | 4.12 |
Saint-Martin-du-Bec (in French pronounced as /sɛ̃ maʁtɛ̃ dy bɛk/) is a commune in the Seine-Maritime department in the Normandy region in northern France.
A farming village in the Pays de Caux, situated some 9miles northeast of Le Havre, at the junction of the D32 and D79 roads, by the banks of the river Lézarde.