| Châteauneuf-d'Ille-et-Vilaine | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Châteauneuf-d'Ille-et-Vilaine (Ille-et-Vilaine).svg |
| Coordinates: | 48.5619°N -1.9286°W |
| Insee: | 35070 |
| Postal Code: | 35430 |
| Arrondissement: | Saint-Malo |
| Canton: | Dol-de-Bretagne |
| Mayor: | Joël Masseron[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Pays de Saint-Malo |
| Elevation Min M: | 2 |
| Elevation Max M: | 43 |
| Area Km2: | 1.38 |
Châteauneuf-d'Ille-et-Vilaine (pronounced as /fr/; br|Kastell-Noez) is a commune in the Ille-et-Vilaine department of Brittany in north-western France.
Inhabitants of Châteauneuf-d'Ille-et-Vilaine are called Castelnoviens in French.