| Moulin-Neuf | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Moulin-Neuf (Ariège).svg |
| Arrondissement: | Pamiers |
| Canton: | Mirepoix |
| Insee: | 09213 |
| Postal Code: | 09500 |
| Mayor: | Céline Baquer[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Mirepoix |
| Coordinates: | 43.075°N 1.9453°W |
| Elevation M: | 326 |
| Elevation Min M: | 307 |
| Elevation Max M: | 480 |
| Area Km2: | 2.62 |
Moulin-Neuf (in French pronounced as /mulɛ̃ nœf/; Occitan (post 1500);: Molin Nòu) is a commune in the Ariège department in southwestern France.