Arbus is a comune (municipality) in the Province of Medio Campidano in the Italian region Sardinia. At an area of 267 km², it is the second largest municipality in Sardinia.
Located about 60 km northwest of Cagliari and about 25 km west of Sanluri on the Sardinian southwest coast. Arbus in 31 December 2004, had a population of 6,895 and has been inhabited by man since the ancient Neolithic. It includes a mountain district which separates Medio Campidano from the sea.
The geology of Arbus is known as batolite ercinico Arburese. There are numerous Tombe dei Giganti (Giant graves) in the district of Capo Pecora, and in other areas of territory.
For both 2002 and 2003, the wide Arbus coasts were awarded "5 sails" by the Legambiente and Touring Club for its outstanding natural beauty, history and culture of is territory. This prize was received only by ten municipalities all over Italy.