Kalfas (Greek: Κάλφας) is a village and a community in the municipal unit of Tritaia, southern Achaea, Greece.

The community consists of the villages Kalfas and Masouraiika.

It is surrounded by mountains and hills full of pine trees and is located on the border between Achaea and Elis, about 45 km southwest of Patras.

The inhabitants are mostly engaged in livestock husbandry and to a lesser extent in agriculture.

A particular sight is the Chapel of the Prophet Elijah especially, especially during the feast of the Holy Spirit.