Ancient Greek religion

Ancient Greek religion
Family	Ancient / Mediterranean
Origin region	Greek-speaking world of the Aegean and Mediterranean
Founding period	Bronze Age roots; classical prominence from the 1st millennium BCE
Estimated adherents	Historical tradition; revived or reconstructed by some modern Hellenic polytheists.

Ancient Greek religion is ancient Greek religion was a polytheistic religious system centered on gods, heroes, sacrifice, festivals, oracles, temples, and civic ritual.

Overview

Ancient Greek religion was practiced across city-states and colonies with local variation. It honored Olympian gods, chthonic deities, heroes, ancestors, and divine powers associated with nature, politics, craft, war, love, wisdom, and the household. Ritual practice was often more central than fixed doctrine.

Key beliefs

A pantheon including Zeus, Hera, Athena, Apollo, Artemis, Demeter, Poseidon, Aphrodite, Ares, Hermes, Hephaestus, Hestia, and Dionysus
Reciprocity between humans and gods through offerings and vows
Hero cults and ancestral memory
Fate, divine favor, pollution, purification, and justice
Myths as sacred stories rather than a single fixed creed

Practices

Animal and food sacrifice
Libations and prayers
Public festivals, games, and dramatic performances
Oracular consultation, especially at Delphi and Dodona
Household worship of Hestia, ancestors, and protective powers

Places of worship

Temple
Altar
Sanctuary
Household hearth
Hero shrine

Sacred texts

Homeric epics
Hesiod's Theogony and Works and Days
Homeric Hymns
Orphic and mystery texts in some traditions

Holidays and observances

Panathenaia
Dionysia
Eleusinian Mysteries
Olympic Games as sacred festival
Thesmophoria

Branches and related traditions

Hellenism - Modern reconstructionist or revivalist forms of Greek polytheism.
Orphism - Ancient mystery and poetic traditions associated with Orpheus.
Eleusinian Mysteries - Initiatory cult centered on Demeter and Persephone.