| Chaumes-en-Retz | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Nazaire |
| Canton: | Pornic and Machecoul-Saint-Même |
| Insee: | 44005 |
| Postal Code: | 44320, 44680 |
| Mayor: | Jacky Drouet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pornic Agglo Pays de Retz |
| Coordinates: | 47.116°N -1.942°W |
| Elevation Min M: | 1 |
| Elevation Max M: | 61 |
| Area Km2: | 76.55 |
Chaumes-en-Retz (in French pronounced as /ʃom ɑ̃ ʁɛ/, literally Chaumes in Retz; Breton: Kalaved-Raez) is a commune in the department of Loire-Atlantique in western France. The municipality was established on 1 January 2016 by merger of the former communes of Arthon-en-Retz and Chéméré.[2]