Argalasti is a village and former municipality located in Magnesia, Thessaly, Greece. It currently serves as the seat and a municipal unit of the municipality South Pelion, which covers an area of 74.820 km2. The settlement is situated on a fertile plateau approximately 40 km southeast of Volos.
The village functions as a significant commercial and tourism center for the region, characterized by a rich cultural tradition. It serves as a common stopping point for travelers traveling toward the Aegean Sea or the beaches of the Pagasetic Gulf. Notable local architecture includes the church tower of Sts. Apostles, which dates back to the beginning of the 20th century.