Siamaggiore

Siamaggiore (Siamaiore or Siamajori ) is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 90 km northwest of Cagliari and about 7 km northeast of Oristano.

Siamaggiore borders the following municipalities: Oristano, Solarussa, Tramatza, Zeddiani.