Konsmo is a village in Lyngdal municipality in Agder county, Norway.

The village is located south of the lake Ytre Øydnavatnet along the Audna river in the Audnedalen valley.

The small village of Helle is located just 1 kilometre (0.62 mi) north of Konsmo.

The municipality (originally the parish) is named after the old Konsmo farm (Old Norse: Konungsmór), since the first church was built there.

The name is a corruption of Kongsmoen which means King's moor.