In Greek and Roman mythology, Iapyx (from Greek Ἰάπυξ, gen.: Ἰάπυγος), Iapux or Iapis was a favourite of Apollo. The god wanted to confer upon him the gift of prophecy, the lyre, etc.; but Iapyx, wishing to prolong the life of his father, preferred the more tranquil art of healing to all the others.
Virgil's Aeneid (XII: 391-402) relates that Iapyx was Aeneas's healer during the Trojan War and then escaped to Italy after the war, founding Apulia.
His descent is unclear. He was either:
Iapyx is also the name of a minor Greek wind god, the north-west or west-north-west wind.