Hieros gamos, hieros (ἱερός) meaning "holy" or "sacred" and gamos (γάμος) meaning "marriage," or Hierogamy, is a sacred marriage that plays out between gods, especially when enacted in a symbolic ritual where human participants represent the deities.

A ritual is a sequence of activities involving gestures, words, actions, or revered objects. Rituals may be prescribed by the traditions of a community, including a religious community. Rituals are characterized, but not defined, by formalism, traditionalism, invariance, rule-governance, sacral symbolism, and performance.