Vlachata (Greek: Βλαχάτα, also Βλαχάτα Εικοσιμίας) is a village and a community in the eastern part of the municipal unit of Leivatho near the south coast of the island of Kefalonia, Greece.

Vlachata is situated on a mountain slope above the Ionian Sea coast, at about 200 m elevation.

Mount Ainos, the highest point of Cephalonia, is 4 km to the northeast.

The road from Argostoli to Poros runs through Vlachata.

Vlachata suffered great damage from the 1953 Ionian earthquake.