Judy Zebra Knight, born Judith Darlene Hampton (born March 16, 1946), usually known as JZ Knight, is an American mystic teacher and author, and is known for claiming to be channel of a spiritual entity named Ramtha.

Knight has appeared on US TV shows, such as Larry King, MSNBC and The Merv Griffin Show, as well as in media such as Psychology Today. Her teachings have attracted figures from the entertainment and political world such as Linda Evans, Shirley MacLaine,.