| Saint-Ouen-des-Alleux | |
| Commune Status: | Commune |
| Coordinates: | 48.3292°N -1.4244°W |
| Insee: | 35304 |
| Postal Code: | 35140 |
| Arrondissement: | Fougères-Vitré |
| Canton: | Fougères-1 |
| Mayor: | Pierre Thomas[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Fougères Agglomération |
| Elevation Min M: | 32 |
| Elevation Max M: | 106 |
| Area Km2: | 15.20 |
Saint-Ouen-des-Alleux (in French pronounced as /sɛ̃.t‿wɛ̃ de.z‿alø/; Breton: Sant-Owen-an-Alloz) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Saint-Ouen-des-Alleux is located 34km (21miles) northeast of Rennes and 38km (24miles) south of Mont Saint-Michel.
The adjacent communes are Saint-Christophe-de-Valains, Le Tiercent, Saint-Hilaire-des-Landes, Saint-Marc-sur-Couesnon, Mézières-sur-Couesnon, and Vieux-Vy-sur-Couesnon.
Inhabitants of Saint-Ouen-des-Alleux are called audonniens in French.
Saint-Ouen-des-Alleux is twinned with: