> Ferdinand Waldo Demara Jr. (1921[1] – June 7, 1982) was an American impostor.

> Demara's impersonations included a naval surgeon, a civil engineer, a sheriff's deputy, an assistant prison warden, a doctor of applied psychology, a hospital orderly, a lawyer, a child-care expert, a Benedictine monk, a Trappist monk, an editor, a cancer researcher, and a teacher. One teaching job led to six months in prison.

> He described his own motivation as "Rascality, pure rascality".