Treviglio is a town and comune in the province of Bergamo, in Lombardy, Northern Italy. It lies 20 kilometres south of the province capital, in the lower territory called Bassa Bergamasca.

The province of Bergamo is a province in the Lombardy region of Italy. Its capital is the city of Bergamo. The province has a population of 1,103,768 (2023), an area of 2,754.91 square kilometers (1,063.68 sq mi), and contains 242 comuni.