Villanova del Sillaro is a comune (municipality) in the Province of Lodi in the Italian region Lombardy, located about 35 km southeast of Milan and about 9 km south of Lodi. As of 31 December 2004, it had a population of 1,541 and an area of 13.8 km². Villanova del Sillaro borders the following municipalities: Pieve Fissiraga, Massalengo, Sant'Angelo Lodigiano, Ossago Lodigiano, Borghetto Lodigiano, Graffignana.