| Saint-Augustin | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Saint-Augustin (Seine-et-Marne).svg |
| Coordinates: | 48.7853°N 3.0308°W |
| Insee: | 77400 |
| Postal Code: | 77515 |
| Arrondissement: | Meaux |
| Canton: | Coulommiers |
| Mayor: | Sébastien Houdayer[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Coulommiers Pays de Brie |
| Elevation Min M: | 69 |
| Elevation Max M: | 152 |
| Area Km2: | 10.37 |
Saint-Augustin (in French pronounced as /sɛ̃.t‿oɡystɛ̃/) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
The river Aubetin flows northward through the commune.
Inhabitants of Saint-Augustin are called Saint-Augustinois.