Athenion was an Athenian comic poet active during the period of Middle Comedy in the 4th and 3rd centuries BCE. According to the 10th-century Byzantine encyclopedia known as the Suda, he was the son of the comic poet Aristomenes and wrote four comedies.

Only fragments of his work survive, preserved primarily by later authors such as Athenaeus in his Deipnosophistae. The Suda records four plays, including the titled comedies Samothracians and The Thessalian. The extant fragments frequently concern themes of food and dining.

As a poet of Middle Comedy, Athenion represents the transitional phase between the political satire of Old Comedy and the social focus of New Comedy. His fragmentary remains offer a glimpse into the broader, mostly lost, landscape of Athenian comic theater beyond major figures like Aristophanes or Menander.