Feraklos Castle (Greek: Kάστρο Φεράκλου), also Feraklou (Φερακλού) and Faraklenon Castle (Φαρακλενόν Kάστρο),[1] is a ruined medieval fortress, located on an 85 m-high hill overlooking the village of Charaki on the east coast of the island of Rhodes, Greece.

By 1408 it was in ruins, and was repaired under the Grand Masters Giovanni Battista Orsini (1467–76) and Pierre d'Aubusson (1476–1503) as a stronghold to protect the area, and particularly watch over the anchorages at the Charaki and Agia Agathi beaches nearby.

[1] After 1470, the Hospitallers abandoned all other fortifications on the island except for Feraklos, nearby Lindos, and the city of Rhodes, which in turn were further strengthened.

A decree of 1474 prescribed that the Feraklos Castle was the place of refuge by the inhabitants of the villages of Malona, Salia, Katagros, Zinodotou, and Kaminari when there was danger.

The northern and western portions date to Byzantine times, but the rest are additions or modifications by the Hospitallers.