Elliniko (Greek: Ελληνικό, meaning 'Hellenic' or 'Greek') is a coastal municipality in the Attica region and a southern suburban town in the Athens agglomeration, Greece.

Elliniko is the site of a major development project for coastal Athens beginning in 2020 and due for completion in 2026 - the Hellenikon Metropolitan Park consisting of luxury homes, hotels, a casino, a marina, shops, offices and Greece's tallest buildings such as the Riviera Tower[3] and Hard Rock Hotel & Casino.

[4] In 1922 after the Greco-Turkish War, many refuges, especially from the Sürmene town of Pontus, settled in the northernmost area of Elliniko, which was subsequently named Sourmena (Σούρμενα).

According to the data provided by the Hellenic National Meteorological Service, Elliniko, like much of the southern suburbs of Athens, has an average annual temperature of 18.6 °C (65.5 °F) and receives 366.5 mm (14.43 in) of precipitation per year thus it marginally falls into the BSh hot semi-arid climate category with strong Mediterranean influences (Csa) according to the Köppen climate classification.

Snowfall is not very common, though it occurs almost every year, but it rarely causes severe disruption to daily life.