San Rocco al Porto (Lodigiano, Piacentino: ) is a comune (municipality) in the Province of Lodi in the Italian region Lombardy, located about southeast of Milan and about southeast of Lodi. As of 31 December 2020, it had a population of 5,983 and an area of .
San Rocco al Porto borders the following municipalities: Fombio, Santo Stefano Lodigiano, Calendasco, Guardamiglio, Piacenza.