Kallithea (Greek: Καλλιθέα), is a village and a community in the municipal unit of Alykes in the island of Zakynthos, Greece. In 2001 Kallithea's population was 216 people. It is situated at the eastern foot of the Vrachionas mountains, at about 60 m elevation. It is 3 km southeast of Katastari, 3 km southwest of Ano Gerakari, 3 km northwest of Agios Dimitrios and 12 km northwest of Zakynthos city. The farm of the Science Park Zakynthos, a Norwegian-Greek institute that focuses on sustainable water use, is situated in Kallithea.