| Saint-Pierre-de-Semilly | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Lô |
| Canton: | Pont-Hébert |
| Insee: | 50538 |
| Postal Code: | 50810 |
| Mayor: | Jean-Claude Braud[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Saint-Lô Agglo |
| Coordinates: | 49.1208°N -1.0044°W |
| Elevation M: | 130 |
| Elevation Min M: | 78 |
| Elevation Max M: | 174 |
| Area Km2: | 4.59 |
Saint-Pierre-de-Semilly (in French pronounced as /sɛ̃ pjɛʁ də səmiji/) is a commune in the Manche department in Normandy in north-western France.[2]