Milis, Miris or Milis in Sardinian language, is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about northwest of Cagliari and about north of Oristano. As of 31 December 2004, it had a population of 1,704 and an area of .
Milis borders the following municipalities: Narbolia, Bauladu, Bonarcado, San Vero Milis, Seneghe, Tramatza.