The Mists of Avalon is a 1983 historical fantasy novel by American writer Marion Zimmer Bradley, in which the author relates the Arthurian legends from the perspective of the female characters. The book follows the trajectory of Morgaine, a priestess fighting to save her Celtic religion in a country where Christianity threatens to destroy the pagan way of life. The epic is focused on the lives of Morgaine, Gwenhwyfar (Guinevere), Viviane, Morgause, Igraine and other women of the Arthurian legend.

Marion Eleanor Zimmer Bradley was an American author of fantasy, historical fantasy, science fiction, and science fantasy novels, and is best known for the Arthurian fiction novel The Mists of Avalon and the Darkover series. Noted for the feminist perspective in her writing, her reputation has been posthumously marred by her daughter Moira Greyland's accusations of child sexual abuse, and for allegedly assisting her second husband, convicted child abuser Walter Breen, in sexually abusing multiple unrelated children.