Montanaso Lombardo is a comune, or municipality, situated in the Province of Lodi within the Lombardy region of northern Italy. It is located approximately 45 kilometres southeast of Milan and about 2 kilometres northeast of the city of Lodi.
The town serves as a local administrative division characterized by its proximity to major regional centers. Its geographic position places it in the heart of the Lombardy territory, situated near key transportation routes connecting the province to larger urban hubs.