Assiros (Greek: Άσσηρος, before 1926: Γιουβέσνα - Giouvesna,[2] Macedonian: Гвоздово, romanized: Gvozdovo) is a village and a former municipality in the Thessaloniki regional unit, Greece.

Excavation between 1975 and 1989 at this site has made a major contribution to understanding the nature of settlement, society, economy and material culture in prehistoric Macedonia.

[5] A combination of radiocarbon and dendrochronological research on building timbers and radiocarbon dates for animal bones recovered from the site has provided one of the few accurate dates for the transition from Bronze to Iron Age in the Aegean area c.1070 BC.

[6] According to the statistics of Vasil Kanchov ("Macedonia, Ethnography and Statistics"), 500 Greek Christians and 360 Turks lived in the village in 1900.

This Central Macedonia location article is a stub.