Kastellia (Greek: Καστέλλια, before 1979: Καστέλλι - Kastelli[2]) is a village in the municipal unit of Gravia, Phocis, Greece.

It is situated at the western end of the wide Cephissus valley, at the foot of the mountains Giona and Oeta.

After the Trojan War the Dorians settled in the area of present Kastellia, and founded the cities Erineus, Boium, Cytinium and Pindus.

[3] In 1835, after the Greek War of Independence, Kastellia became a part of the municipality of Erineos, named after the ancient city.

Commercial facilities include supply yards of building materials and earthmoving machinery as well as a modern unit for processing timber.

A large number of Kastellians live in Athens, Piraeus, Lamia, Thessaloniki, Amfissa, and Larissa, as well as abroad (mainly in America and Australia).

The association publishes a newspaper The Kastelliotika Nea with news and events related to the town and those who have left.

In each of the last 15 years the association has organized a ceremony where the young people from Kastellia who succeed in the Pan-Hellenic Examinations receive a commemorative diploma and a monetary reward.