Typhon (; Ancient Greek: Τυφῶν, romanized: Typhôn, [tyːpʰɔ̂ːn]), also Typhoeus (; Τυφωεύς, Typhōeús), Typhaon (Τυφάων, Typháōn) or Typhos (Τυφώς, Typhṓs), was a monstrous serpentine giant and one of the deadliest creatures in Greek mythology. According to Hesiod, Typhon was the son of Gaia and Tartarus. However, one source has Typhon as the son of Hera alone, while another makes Typhon the offspring of Cronus. Typhon and his mate Echidna were the progenitors of many famous monsters.

Typhon attempted to overthrow Zeus for the supremacy of the cosmos. The two fought a cataclysmic battle, which Zeus finally won with the aid of his thunderbolts. Defeated, Typhon was cast into Tartarus, or buried underneath Mount Etna, or in later accounts, the island of Ischia.

Typhon mythology is part of the Greek succession myth, which explained how Zeus came to rule the gods. Typhon's story is also connected with that of Python (the serpent killed by Apollo), and both stories probably derived from several Near Eastern antecedents. Typhon was (from c. 500 BC) also identified with the Egyptian god of destruction Set. In later accounts, Typhon was often confused with the Giants.