The Province of Asti is a province in the Piedmont region of northern Italy. Its capital is the city of Asti. To the northwest it borders on the province of Turin; to the southwest it borders on the province of Cuneo. To the east it borders on the province of Alessandria, while in the south it shares a very short border with the Ligurian province of Savona. It has an area of , and a total population of 222,336 (2012).