Agios Dimitrios is a village in Visaltia Municipality, in the regional unit of Serres, in the region of Central Macedonia, Greece. Agios Dimitrios lies 4.1 km from the Kerdylio mountains. It has 212 inhabitants (2021). The nearest city is Serres, 26 km to the northwest. Beaches nearby: Kyani Akti (15 km). Among the landmarks around are Amphipolis (13.7 km), Eion (16.5 km) and Saint John the Baptist Monastery, Serres (29 km).

Also written Άγιος Δημήτριος.