Kato Souli is a town in Marathonas Municipality, in the regional unit of East Attica, in the region of Attica, Greece. Kato Souli lies at 20 m above sea level, 12.5 km from the Parnitha mountains. It has 1,753 inhabitants (2021). The nearest city is Melissia, 18.7 km to the southwest. Beaches nearby: Schinia (3.1 km), Marathona (4.9 km), Theretro Axiomatikon Naftikou (6 km). Among the landmarks around are Parthenon (32 km), Rhamnous (6.8 km) and Platonic Academy (32 km). Among the natural features are Mount Lycabettus (30 km) and Davelis Cave (15.0 km).
Also written Κάτω Σούλι.
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