Of the characters in Greek mythology called Phaethon (; , Phaéthon, ), the best known was the son of the Oceanid Clymene and the solar deity Apollo or Helios. Alternative, less common genealogies make him a son of Clymenus by Merope, of Helios and Rhode (thus a full brother of the Heliadae) or of Helios and Prote.

Phaeton, Phaëton, Phaethon, or Phaëthon may refer to:

Several figures with astral associations:

• Phaethon, son of Helios
• Phaethon (son of Eos), guardian of the temples of Aphrodite
• Phaethon, personification of the planet now known as Jupiter
• Phaethon, one of the horses of Eos
• Phaethon, a lost play by Euripides