Great Goddess is the concept of an almighty goddess or mother goddess, or a matriarchal religion. Apart from various specific figures called this from various cultures, the Great Goddess hypothesis, is a postulated fertility goddess supposed to have been worshipped in the Neolithic era across most of Eurasia at least. Scholarly belief in this hypothesis has reduced in recent decades,^[1] though theological belief in a Great Goddess is common in the Goddess movement.

Specific examples include:

• Great Goddess, referring to the Greek and Roman goddess Cybele; also associated with Rhea (mother of the gods) and Gaia (mother of the Titans)
• Great Goddess, anglicized form of the Roman Magna Dea
• Great Goddess, anglicized form of the Sanskrit Mahadevi, the Shakti sum of all goddesses
• Magu (deity), a deity in Chinese and Korean myth
• Great Goddess of Teotihuacan, an ancient Mesoamerican deity
• Great Goddess, also known as the Triple Goddess, an important feminine deity of the Neopagan religion of Wicca