| Châteaubourg | |
| Commune Status: | Commune |
| Arrondissement: | Tournon-sur-Rhône |
| Canton: | Guilherand-Granges |
| Insee: | 07059 |
| Postal Code: | 07130 |
| Mayor: | Bertille Allemand[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Rhône Crussol |
| Coordinates: | 44.9978°N 4.8442°W |
| Elevation M: | 128 |
| Elevation Min M: | 106 |
| Elevation Max M: | 444 |
| Area Km2: | 4.27 |
Châteaubourg (in French pronounced as /ʃatobuʁ/; Occitan (post 1500);: Chastelboc) is a commune in the Ardèche department in the Auvergne-Rhône-Alpes region in southern France.