Ossago Lodigiano (Lodigiano: ) is a comune (municipality) in the Province of Lodi in the Italian region Lombardy, located about southeast of Milan and about southeast of Lodi.
Ossago Lodigiano borders the following municipalities: Cavenago d'Adda, San Martino in Strada, Massalengo, Mairago, Villanova del Sillaro, Brembio, Borghetto Lodigiano.