Chronos, also spelled Khronos or Chronus, is a personification of time in pre-Socratic philosophy and later literature.

In Ancient Greek religion and mythology, Cronus, Cronos, or Kronos was the leader and youngest of the first generation of Titans, the divine descendants of the primordial Gaia and Uranus. He overthrew his father and ruled during the mythological Golden Age, until he was overthrown by his own son Zeus and imprisoned in Tartarus. According to Plato, however, the deities Phorcys, Cronus, and Rhea were the eldest children of Oceanus and Tethys.