Metalliko (Greek: Μεταλλικό, meaning 'mineral', before 1926: Γιάννες - Giannes;[2] Macedonian Slavic: Јанес, Janes; Bulgarian: Янешево, Yaneshevo) is a settlement in the city of Kilkis, in northern Greece, located 6 km northwest of downtown Kilkis.

The village is named after a nearby spring of mineral water.

Metalliko is 19 km south of Doirani, which is a border crossing into North Macedonia.

Metalliko has a train station on the line from Thessaloniki to Serres and Alexandroupoli.

In ancient times (12th century BC), Phrygians founded the town Vragylos in the place where Metalliko now lies.