Palmas Arborea () is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about northwest of Cagliari and about southeast of Oristano. As of 31 December 2004, it had a population of 1,366 and an area of .
Palmas Arborea borders the following municipalities: Ales, Oristano, Pau, Santa Giusta, Villa Verde, Villaurbana.