| Châtelneuf | |
| Commune Status: | Commune |
| Arrondissement: | Montbrison |
| Canton: | Boën-sur-Lignon |
| Insee: | 42054 |
| Postal Code: | 42940 |
| Mayor: | Marc Pelardy[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Loire Forez |
| Coordinates: | 45.6386°N 3.9839°W |
| Elevation M: | 830 |
| Elevation Min M: | 498 |
| Elevation Max M: | 1110 |
| Area Km2: | 8.48 |
Châtelneuf (in French pronounced as /ʃatɛlnœf/) is a commune in the Loire department in central France.