| La Barre-de-Semilly | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Lô |
| Canton: | Saint-Lô-2 |
| Insee: | 50032 |
| Postal Code: | 50810 |
| Mayor: | Loïc Renimel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Saint-Lô Agglo |
| Coordinates: | 49.1119°N -1.0331°W |
| Elevation M: | 155 |
| Elevation Min M: | 48 |
| Elevation Max M: | 166 |
| Area Km2: | 7.74 |
La Barre-de-Semilly (in French pronounced as /la baʁ də səmiji/) is a commune in the Manche department in the Normandy region in northwestern France.