| Saint-Arnoult | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Arnoult 76.svg |
| Arrondissement: | Rouen |
| Canton: | Port-Jérôme-sur-Seine |
| Insee: | 76557 |
| Postal Code: | 76490 |
| Mayor: | Patrice Colombel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Caux Seine Agglo |
| Coordinates: | 49.5297°N 0.6686°W |
| Elevation M: | 130 |
| Elevation Min M: | 9 |
| Elevation Max M: | 146 |
| Area Km2: | 13.86 |
Saint-Arnoult (in French pronounced as /sɛ̃.t‿aʁnu/) is a commune in the Seine-Maritime department in the Normandy region in northern France.
A farming village situated by the banks of the Seine, some 23miles northwest of Rouen at the junction of the D982, D440 and the D281 roads.