What if one dreams their Mother is a witch?

The most likely explanation would be that you are angry with your mother. By visualizing her as a stereotype of wickedness, the dream profides justification of your negative feelings toward her. But at the same time, on a deeper level, your mind is showing you a fantasy, much like a cartoon. Characters such as the Wicked Witch of the West or the witch in the gingerbread house are childhood imaginings. Perhaps the underlying message in the dream is that it is time to let go of childish attitudes and develop a more mature perspective.