Nea Smyrni or Nea Smirni (Greek: Νέα Σμύρνη, New Smyrna) is a suburb south of Athens, Greece. Nea Smyrni is located about 5 km SW of downtown Athens, about 5 km SW of Kifissias Avenue, W of Vouliagmenis Avenue, about 6 km E of Piraeus, and NE of Poseidonos Avenue.
The area was once partly made up of farmlands, with woods dominating the landscape, and its mixed farming included pastures, vegetables, and groves ; forests lay to the east. In 1922, a number of refugees principally from Smyrna, (today's İzmir), arrived and settled in the southwestern part of Athens, which became Nea Smyrni. Many of its inhabitants, including the soccer team of Panionios, moved here from Smyrna, transforming the plain into an urban area.
The district is mainly made up of residential areas with a few business areas particularly on Syngrou Avenue. Its two main streets have been linked since 1995 with interchanges and the roads connecting with Hymittos Street and Syngrou Avenue to the north. The Athens Industrial Area lies to the north.
Nea Smyrni has schools, lyceums, gymnasia, banks, post offices and squares (plateies).

Sites of Interest
It was one of the few cities located close to Athens that saw its population continue to grow. It is also the fourth-most densely populated municipality in Greece (following Neapoli, Kallithea, and Ampelopikoi).