Pelion or Pelium (Modern Greek: Πήλιο, Pílio; Ancient Greek/Katharevousa: Πήλιον, Pēlion) is a mountain at the southeastern part of Thessaly in northern Greece, forming a hook-like peninsula between the Pagasetic Gulf and the Aegean Sea.

Pelion is considered one of the most beautiful mountains in Greece and is a popular tourist attraction throughout the year: hiking trails and stone paths give access to springs, coves and numerous beaches, sandy or pebbly, set among lusciously green slopes.

Herman Melville uses its mythological images in Book XXV of Pierre: or, The Ambiguities: "You saw Enceladus the Titan, the most potent of all the giants, writhing from out the imprisoning earth;—turbaned with upborn moss he writhed; still, though armless, resisting with his whole striving trunk, the Pelion and the Ossa hurled back at him;—turbaned with upborn moss he writhed; still turning his unconquerable front toward that majestic mount eternally in vain assailed by him, and which, when it had stormed him off, had heaved his undoffable incubus upon him, and deridingly left him there to bay out his ineffectual howl."

As of late August, however, a natural rebirth of the forest was already being noticed, with several trees gradually turning green again, as well as bushes appearing on the ground.

Modern Pelion's twenty-four villages retain traditional Pelian architecture and construction, with stone buildings made out of expertly carved local grey, blue, or green slate and red clay.

Houses are usually multi-storied and feature the characteristic Pelian oriel construction, with tall windows and abundant painted ornamentation.

Pelion is part of the Magnesia regional unit (capital city: Volos) and embraces twenty-six villages including: Most significant: Others: