Nea Chalkidona (Greek: Νέα Χαλκηδόνα, meaning New Chalcedon) is a town and a suburb in the Athens agglomeration, Greece.

[2] Nea Chalkidona is an inner suburb of Athens, located 5 km north of the city centre.

Its built-up area is continuous with that of municipalities of Athens and the surrounding suburbs Agioi Anargyroi and Nea Filadelfeia.

At 0.80 km2[3] it is the smallest municipal unit in the Athens metropolitan area.

The A1 motorway (Athens–Thessaloniki–Evzonoi) and Greek National Road 1 pass through Nea Chalkidona.