Grassano is a town and comune in the province of Matera, in the southern Italian region of Basilicata. It is located between the Bradano and Basento rivers at an elevation ranging from about 150 to 576 metres (492 to 1,890 ft) above sea level. The town proper is 43 kilometres (27 mi) from Matera and 59 kilometres (37 mi) from the regional capital, Potenza.