| Saint-Denis-de-Mailloc | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Denis-de-Mailloc.svg |
| Arrondissement: | Lisieux |
| Canton: | Livarot-Pays-d'Auge |
| Insee: | 14571 |
| Postal Code: | 14100 |
| Mayor: | Philippe Ratel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Lisieux Normandie |
| Coordinates: | 49.0931°N 0.3133°W |
| Elevation M: | 168 |
| Elevation Min M: | 64 |
| Elevation Max M: | 174 |
| Area Km2: | 4.25 |
Saint-Denis-de-Mailloc (in French pronounced as /sɛ̃ dəni də majo/) is a commune in the Calvados department, region of Normandy, northwestern France.