Theagenes (Greek: Θεαγένης, floruit 470s–480s) was an Athenian politician.
A native of Athens, Theagenes belonged to a wealthy and aristocratic family that claimed descent from Miltiades and Plato.
He had a wife, Asclepideneia, who was the great-granddaughter of the Neoplatonic philosopher Plutarch of Athens.
[4] After Proclus' death however, Theagenes came into conflict with the school's headmasters, as he used its patronage to increase his own prestige.
[5] A panegyric dedicated to Theagenes, probably written by Pamprepius, exists.