Lady of Avalon is a 1997 historical fantasy novel by American writers Marion Zimmer Bradley and Diana L. Paxson. It is the sequel to The Forest House and the prequel to The Mists of Avalon.

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.