| Montmartin | |
| Commune Status: | Commune |
| Arrondissement: | Compiègne |
| Canton: | Estrées-Saint-Denis |
| Insee: | 60424 |
| Postal Code: | 60190 |
| Mayor: | Patrick Grévin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Plaine d'Estrées |
| Coordinates: | 49.4644°N 2.6944°W |
| Elevation M: | 80 |
| Elevation Min M: | 47 |
| Elevation Max M: | 97 |
| Area Km2: | 3.33 |
Montmartin (in French pronounced as /mɔ̃maʁtɛ̃/) is a commune in the Oise department in northern France.