Mikro Souli (Greek: Μικρό Σούλι) is a semi-mountainous village (altitude 300 m.) in Serres regional unit of Central Macedonia, Greece, located 60 km southeast of the city of Serres. Since the 2011 local government reform it is a part (municipal unit) of the municipality of Amphipolis. It has a population of 334 inhabitants (2021). Its former name was "Semalto" (probably from the Latin words "semi-" and "altus")
