Saint-Méloir-des-Ondes
Saint-Méloir-des-Ondes 
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The town hall of Saint-Méloir-des-Ondes  | |
Location of Saint-Méloir-des-Ondes  | |
| Coordinates: 48°38′18″N 1°54′06″W / 48.6383°N 1.9017°W | |
| Country | France | 
| Region | Brittany | 
| Department | Ille-et-Vilaine | 
| Arrondissement | Saint-Malo | 
| Canton | Saint-Malo-1 | 
| Intercommunality | CA Pays de Saint-Malo | 
| Government | |
| • Mayor (2020–2026) | Dominique De La Portbarre | 
Area 1  | 29.49 km2 (11.39 sq mi) | 
| Population  (2022)  | 4,666 | 
| • Density | 160/km2 (410/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 35299 /35350  | 
| Elevation | 2–58 m (6.6–190.3 ft)  (avg. 51 m or 167 ft)  | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Saint-Méloir-des-Ondes (French pronunciation: [sɛ̃ melwaʁ de.z‿ɔ̃d]; Gallo: Saent-Mleï, Breton: Sant-Meleg) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. It is located near Saint-Malo.
The parish was named after St Melor a Breton and Cornish saint, by the monks of Mont Saint-Michel, who established a priory there in the early 11th century.