Nughedu Santa Vittoria (in Sardinian just Nughedu) is a comune (municipality) in the Province of Oristano in the Italian region of Sardinia, located about 100 km north of Cagliari and about 40 km northeast of Oristano. Nughedu Santa Vittoria borders the municipalities of Ardauli, Austis, Bidonì, Neoneli, Olzai and Sorradile. It is home to a number of prehistoric structures, including several domus de janas and a proto-nuraghe.