Jasper Maskelyne was a British stage magician in the 1930s and 1940s. He was one of an established family of stage magicians, the son of Nevil Maskelyne and a grandson of John Nevil Maskelyne. He is most remembered for his accounts of his work for the British military during the Second World War, in which he claimed to have created large-scale ruses, deception, and camouflage in an effort to defeat the Nazis.

John Nevil Maskelyne was an English stage magician and inventor of the pay toilet, along with other Victorian-era devices. He worked with magicians George Alfred Cooke and David Devant, and many of his illusions are still performed today. His book Sharps and Flats: A Complete Revelation of the Secrets of Cheating at Games of Chance and Skill is considered a classic overview of card sharp practices. In 1914 he founded the Occult Committee, a group to "investigate claims to supernatural power and to expose fraud".