| Chaudefonds-sur-Layon | |
| Commune Status: | Commune |
| Arrondissement: | Angers |
| Canton: | Chalonnes-sur-Loire |
| Insee: | 49082 |
| Postal Code: | 49290 |
| Mayor: | Yves Berland[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Loire Layon Aubance |
| Coordinates: | 47.3269°N -0.7047°W |
| Elevation M: | 29 |
| Elevation Min M: | 12 |
| Elevation Max M: | 95 |
| Area Km2: | 14.77 |
| Demonym: | Califontain, Califontaine |
Chaudefonds-sur-Layon (in French pronounced as /ʃodfɔ̃ syʁ lɛjɔ̃/, literally Chaudefonds on Layon) is a commune in the Maine-et-Loire department of western France.
The commune is traversed by the river Layon.