Hippothoon was an Athenian tragic poet active in the 5th century BCE. The Suda, a 10th-century Byzantine encyclopedia, identifies him as a tragic poet and records the dubious claim that he was a son of the tragedian Sophocles. No other biographical details are extant.

Only one title is associated with him: Antenoridae, as listed in the Suda. The play is lost, and no fragments survive.

Hippothoon is an obscure figure. His minimal significance derives solely from the late, questionable assertion of his familial link to Sophocles. He is absent from canonical lists of successful tragedians and had no discernible influence on the literary tradition.