Milies is a village and a former municipality in Magnesia, Thessaly, Greece. Since the 2011 local government reform it is part of the municipality South Pelion, of which it is a municipal unit. The municipal unit has an area of 63.754 km2. It is a traditional Greek mountain village, at a height of 400 m on Mount Pelion. It is 28 km from Volos, the capital city of Magnesia. Milies is connected with the GR-34A It has traditional stone houses, cobbled roads, good restaurants and accommodation in abundance. Milies is also notable for being the terminus of the narrow gauge (60 cm) Pelion Railway, built between 1895 and 1903 by the Italian engineer, Evaristo de Chirico, father of the famous artist Giorgio de Chirico. This proved to be of considerable economic advantage to the region. The recently railway runs between Ano Lechonia and Milies twice a week at the weekend. The village commands striking views across the Pagasetic Gulf and benefits from the many streams and water sources for which Mt. Pelion is renowned. These result in rich vegetation and cool, forested mountain slopes.

Magnesia is one of the regional units of Greece. It is part of the region of Thessaly. Its capital is the city of Volos. About 70% of the population of Magnesia live in the Greater Volos area, which is the second-largest city in Thessaly and the third busiest commercial port in Greece.