Kálamos (Greek: Κάλαμος, known in antiquity as Καρνος - Karnos), is a mountainous island and a former community in the Ionian Islands, Greece. Since the 2011 local government reform it is part of the municipality Lefkada, of which it is a municipal unit. It lies east of Lefkada, near the Greek mainland. It has an overwintering population of around 500 people, which is swelled substantially in the summer by tourists. The name Kalamos means reed in Greek. Its population was 496 at the 2011 census. The land area is , and its highest point is  above sea level.