Serge Monast (1945 – 5 or 6 December 1996) was a conspiracy theorist. He is mostly known for his promotion of the Project Blue Beam conspiracy theory, which posits a plot to facilitate a totalitarian world government by destroying Abrahamic religions and replacing them with a New Age belief system using futuristic NASA technology and involving a faked alien invasion or fake extraterrestrial encounter meant to deceive nations into uniting under a world government.