Saint-Ouën-des-Vallons (French pronunciation: [sɛ̃.t‿wɛ̃ de valɔ̃]) is a former commune in the Mayenne department in north-western France.

[2] From 1 January 2019 the commune was unified with Montsûrs-Saint-Céneré, Deux-Évailles and Montourtier, and the new municipality took the name of Montsûrs.

[3]

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