The Arnon (French pronunciation: [aʁnɔ̃]) is a 150.5 km (93.5 mi) long river in central France. It is a left tributary of the river Cher.[1] Its source is near the village of Préveranges, west of Montluçon. Its longest tributary is the Théols.[1] The Arnon flows generally north, through the following departments and towns:
The Arnon flows into the river Cher near Vierzon.