| Casson | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Casson.svg |
| Arrondissement: | Châteaubriant-Ancenis |
| Canton: | Nort-sur-Erdre |
| Insee: | 44027 |
| Postal Code: | 44390 |
| Mayor: | Philippe Euzénat[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Erdre et Gesvres |
| Coordinates: | 47.3867°N -1.5583°W |
| Elevation Min M: | 3 |
| Elevation Max M: | 46 |
| Area Km2: | 16.15 |
Casson (in French pronounced as /kasɔ̃/; Gallo: Caczon, Breton: Kazon) is a commune in the Loire-Atlantique department in western France.