Monte San Martino is a comune, or municipality, located in the Province of Macerata within the Marche region of Italy. It is situated approximately 70 kilometres (43 mi) south of Ancona and about 30 kilometres (19 mi) south of Macerata.
The village has a population of 808 people. It serves as a small rural community within the Marche region, characterized by its location in the central Italian landscape.