| Riaillé | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Riaillé (Loire-Atlantique).svg |
| Arrondissement: | Châteaubriant-Ancenis |
| Canton: | Nort-sur-Erdre |
| Insee: | 44144 |
| Postal Code: | 44440 |
| Mayor: | André Raitière[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays d'Ancenis |
| Coordinates: | 47.5197°N -1.2942°W |
| Elevation Min M: | 17 |
| Elevation Max M: | 88 |
| Area Km2: | 50.02 |
Riaillé (in French pronounced as /ʁjaje/; Gallo: Riâlhë, Breton: Rialeg) is a commune in the Loire-Atlantique department in western France.