Light Fantastic is the title of a television documentary series that explores the phenomenon of light and aired in December 2004 on BBC Four. The series comprised four programmes respectively titled: "Let There Be Light"; "The Light of Reason"; "The Stuff of Light"; and "Light, the Universe and Everything." The material was presented by Cambridge academic Simon Schaffer.

Simon J. Schaffer is a historian of science, previously a professor of the history and philosophy of science at the Department of History and Philosophy of Science at the University of Cambridge and was editor of The British Journal for the History of Science from 2004 to 2009.