Exoudun is a commune in the Deux-Sèvres department in the Nouvelle-Aquitaine region in western France.

According to Albert Dauzat and Charles Rostaing, the name is derived from the Gallic uxelo, high, and dunum, fortress.

[4] Human occupation, which seems ancient, dates back to prehistoric times, during the Neolithic, when the first neolithic men who practiced agriculture arrived, as highlighted by the presence in the commune itself, of the village's Dolmen; presenting a covering table and two orthostats at his side, his condition is considered ruined.

During Antiquity, in Exoudun, as its toponymy attests, the presence of the Celtic Gauls, probably the Pictons, as well as a fortified enclosure of good height are proven.

During the Middle Ages, Lordship of Exoudun was held in succession by several noble families, including the Lusignans.