Baratili San Pietro (Sardinian: Boàtiri) is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 100km northwest of Cagliari and about 11km north of Oristano. As of 31 December 2004, it had a population of 1,278 and an area of 6.0km². Baratili San Pietro borders the following municipalities: Nurachi, Oristano, Riola Sardo, San Vero Milis, Zeddiani.
