Montviron

{{Infobox French commune

|name = Montviron

|image = Montviron Mairie.jpg

|caption = Town hall

|arrondissement = Avranches

|canton = Avranches

|INSEE = 50355

|postal code = 50530

|commune = Sartilly-Baie-Bocage

|coordinates = {{coord|48.7383|-1.4192|format=dms|display=inline,title}}

|elevation m = 91

|elevation min m = 27

|elevation max m = 121

|area km2 = 5.91

|population = 344

|population date = 2022

|population footnotes = {{cite web|url=https://www.insee.fr/fr/statistiques/fichier/8290591/ensemble.pdf|title=Populations de référence 2022|language=fr|trans-title=Reference populations 2022|publisher=INSEE|date=December 2024}}

}}

Montviron ({{IPA|fr|mɔ̃viʁɔ̃}}) is a former commune in the Manche department in Normandy in north-western France. On 1 January 2016, it was merged into the new commune of Sartilly-Baie-Bocage.[https://www.legifrance.gouv.fr/eli/arrete/2015/12/14/INTB1532161A/jo/texte Arrêté préfectoral] 14 December 2015 {{in lang|fr}}