| Mareuil-sur-Ourcq | |
| Commune Status: | Commune |
| Arrondissement: | Senlis |
| Canton: | Nanteuil-le-Haudouin |
| Insee: | 60380 |
| Postal Code: | 60890 |
| Mayor: | Benoît Proffit[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Valois |
| Coordinates: | 49.1372°N 3.0778°W |
| Elevation M: | 70 |
| Elevation Min M: | 56 |
| Elevation Max M: | 138 |
| Area Km2: | 10.14 |
Mareuil-sur-Ourcq (pronounced as /fr/, literally Mareuil on Ourcq) is a commune in the Oise department in northern France.