Aunis is a
former province of
France. It extended to
Marais Poitevin in the north,
Basse Saintonge (and
Niortais) in the east, and
Rochefortais in the south. Aunis had an influence approximately 20-25 km into the
Isle of Ré (
l'île de Ré).
Today, it is a part of the Charente-Maritime département along with Saintonge.