| Châtelier | |
| Commune Status: | Commune |
| Arrondissement: | Châlons-en-Champagne |
| Canton: | Argonne Suippe et Vesle |
| Insee: | 51133 |
| Postal Code: | 51330 |
| Mayor: | Gilles Marcel François[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Argonne Champenoise |
| Coordinates: | 48.9383°N 4.9039°W |
| Elevation M: | 176 |
| Area Km2: | 10.7 |
Le Châtelier (in French pronounced as /lə ʃatlje/) is a commune in the Marne department in north-eastern France.