Kallithea (), is a village and a community in the municipal unit of Alykes in the island of Zakynthos, Greece. In 2011 Kallithea's population was 238 people. It is situated at the eastern foot of the Vrachionas mountains, at about elevation. It is southeast of Katastari, southwest of Ano Gerakari, northwest of Agios Dimitrios and 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. The village suffered great damage from the 1953 Ionian earthquake.