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Megala Kalyvia (Greek: Μεγάλα Καλύβια) is a village and a former municipality in the Trikala regional unit, Thessaly, Greece. Since the 2011 local government reform it is part of the municipality Trikala, of which it is a municipal unit. The municipal unit has an area of 45.333 km. Population 2,345 (2021).