Nichelino is a comune (municipality) in the Province of Turin in the Italian region Piedmont, located about 8 km southwest of Turin. As of 31 December 2004, it had a population of 48,297 and an area of 20.6 km². Nichelino borders the following municipalities: Turin, Orbassano, Beinasco, Moncalieri, Candiolo, and Vinovo. The frazione of Stupinigi houses the famous Palazzina di Stupinigi, part of the UNESCO list of World Heritage Sites.