The Seven-headed serpent (Modern Greek: Το εφτακέφαλο φίδι) is a Greek fairy tale collected by linguist Bernhard Schmidt (de) in German as Die Siebenkopfige Schlange, in his work Griechische Märchen.
They eventually come to a garden with fountains of gold, silver, and pearls, with a large castle and lake nearby.
The Lake warned them that the seven-headed serpent-king of the island would soon wake and bathe in it; it would devour the men alive if they were found.
One day, an old woman from the Spinning Convent offered the queen an apple that would give her a child.
Greek folktale scholars Anna Angelopoulou and Aigle Brouskou, editors of the Greek Folktale Catalogue, classified Schmidt's tale as type ATU 300, "Ο Δρακοντοκτόνος ήρωας" ("The Dragonslaying Hero").