Panyassis of Halicarnassus, sometimes known as Panyasis (Ancient Greek Πανυάσις), was a 5th-century BC Greek epic poet, famous for the Heracleia and the Ionica. It is believed that he also wrote other works which have since been lost. He was critically unappreciated during his lifetime, but was posthumously recognised as one of the greatest poets of archaic Greece. He was either Herodotus' uncle or cousin.