| Gathemo | |
| Commune Status: | Commune |
| Arrondissement: | Avranches |
| Canton: | Le Mortainais |
| Insee: | 50195 |
| Postal Code: | 50150 |
| Mayor: | Christelle Errard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Mont-Saint-Michel-Normandie |
| Coordinates: | 48.7661°N -0.9747°W |
| Elevation Min M: | 230 |
| Elevation Max M: | 367 |
| Area Km2: | 10.41 |
Gathemo (in French pronounced as /ɡatmo/) is a commune in the Manche department in north-western France.