Serramanna, Serra Manna (wide range) in sardinian language, is a comune (municipality) in the Province of Medio Campidano in the Italian region Sardinia, located about 30 kilometres (19 mi) northwest of Cagliari and about 15 kilometres (9 mi) south of Sanluri. As of 31 December 2004, it had a population of 9,443 and an area of 83.9 square kilometres (32.4 sq mi).