Stupinigi, with some 200 inhabitants, is today a hamlet of the comune of Nichelino, in the Metropolitan City of Turin (Piedmont, north-west Italy)
It borders with the comuni (municipalities) of Candiolo and Orbassano on the southwestern outskirts of Turin, about 10 km from the centre of the city. Before 1869, it formed part of the comune of Vinovo.
Stupinigi is known for the eighteenth-century Palazzina di Stupinigi, one of the historical Residences of the Royal House of Savoy, for the medieval Castelvecchio di Stupinigi, and for the associated park and nature reserve, the Parco Naturale di Stupinigi.