（*)Aga/qwn), an Athenian tragic poet, was born about B. C. 447, and sprung from a rich and respectable family.
He was consequently contemporary with Socrates and Alcibiades and the other distinguished characters of their age, with many of whom he was on terms of intimate acquaintance. Amongst these was his friend Euripides.
He was remarkable for the handsomeness of his person and his various accomplishments. (Plat. Protag p. 156b.)
He gained his first victory at the Lenacan festival in B. C. 416, when he was a little above thirty years of age : in honour of which Plato represents the Symposium, or banquet, to have been given, which he has made the occasion of his dialogue so called.
The scene is laid at Agathon's house, and amongst the interlocutors are, Apollodorus, Socrates, Aristophanes, Diotima, and Alcibiades. Plato was then fourteen years of age, and a spectator at the tragic contest, in which Agathon was victorious. (Athen. 5.217a.) When Agathon was about forty years of ag