Madytos () is a former municipality in the Thessaloniki regional unit, Greece. Since the 2011 local government reform it is part of the municipality Volvi, of which it is a municipal unit. Its population was 2,045 in 2021. The municipal unit has an area of 89.909 km<sup>2</sup>. The seat of the municipality was in Nea Madytos. The town takes its name from the ancient Greek city of Madytus at the shore of Hellespont.
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