Demetrius of Amphipolis (Greek: Δημήτριος ὁ Ἀμφιπολίτης; fl. 4th century BC) was one of Plato's students. He is perhaps identical with the person mentioned in Plato's Testament as one of the executors of his last will.

• Diogenes Laërtius, Life of Plato. Translated by C.D. Yonge.