Karlonisi (Greek: Καρλονήσι) is an island of the Echinades (Drakoneres subgroup), among the Ionian Islands group of Greece.

It has an average elevation of 61 metres (200 ft).

[1] It is administered by the municipality of Ithaca and is situated 30 km (19 mi) east of the island.

As of 2011[update], it had no resident population.

This Ionian Islands location article is a stub.