The A83 autoroute is a motorway in France. It is in the departments of Pays-de-la-Loire and Poitou-Charentes operated by ASF. It connects Nantes to Niort via Fontenay-le-Comte. The motorway has a junction with the A10 at Niort which gives access to the north and to Bordeaux connection. The A83 forms part of the Autoroute des Estuaires. The total length is 152.5 km. It is also part of the European route E3.