Greek mythology is rich with a pantheon of deities, each ruling over various aspects of the natural world, human life, and the cosmos. Here are some of the primary and well-known Greek deities: Olympian Gods and Goddesses Zeus: The king of the gods, god of the sky, lightning, and thunder. Hera: Queen of the gods, goddess of marriage, women, and childbirth. Poseidon: God of the sea, earthquakes, and horses. Demeter: Goddess of agriculture and fertility. Athena: Goddess of wisdom, war, and weaving