Canton of Saint-Ouen-l'Aumône
# Canton of Saint-Ouen-l'Aumône

The canton of Saint-Ouen-l'Aumône is an administrative division of the Val-d'Oise department, Île-de-France region, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Saint-Ouen-l'Aumône.

It consists of the following communes:

* Auvers-sur-Oise
* Butry-sur-Oise
* Frépillon
* Frouville
* Hédouville
* Hérouville-en-Vexin
* Labbeville
* Mériel
* Méry-sur-Oise
* Nesles-la-Vallée
* Saint-Ouen-l'Aumône
* Valmondois
