Ussana is a comune in the Province of South Sardinia in the Italian region Sardinia, located about 20 kilometres north of Cagliari. As of 31 December 2004, it had a population of 3,870 and an area of 32.8 square kilometres. Ussana borders the following municipalities: Donorì, Monastir, Nuraminis, Samatzai, Serdiana.