Eryximachus

thumb|150px|The figure (center) from Anselm Feuerbach's The Banquet (After Plato) interpreted as a depiction of Eryximachus.

Eryximachus, son of Acumenus (; Greek: Ἐρυξίμαχος Ἀκουμένου Eruxímachos Akouménou; c. 448 – late 5th century or early 4th century BCE) was an ancient Athenian physician who is best remembered for his prominent role in Plato's Symposium. It is likely that he was indicted in the mutilation of the herms, a domestic Athenian conflict during the Peloponnesian War.