Sauzon (French pronunciation: [sozɔ̃]; Breton: Saozon) is a commune on the island of Belle Île in the Morbihan department of the region of Brittany in north-western France. Inhabitants of Sauzon are called Sauzonnais.

Sauzon is one of the four communes of Belle-île en Mer. The town occupies the northwestern part of the island. The village center is located at the mouth of the Sauzon river, 5.8 km (3.6 mi) northwest of Le Palais.