| Roz-Landrieux | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Coordinates: | 48.5439°N -1.8147°W |
| Insee: | 35246 |
| Postal Code: | 35120 |
| Arrondissement: | Saint-Malo |
| Canton: | Dol-de-Bretagne |
| Mayor: | François Mainsard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Dol et Baie du Mont Saint-Michel |
| Elevation Min M: | 0 |
| Elevation Max M: | 50 |
| Area Km2: | 18.10 |
Roz-Landrieux (Gallo: Roz-Landrioec,) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Inhabitants of Roz-Landrieux are called Rozéens in French.