Carl Sargent (born December 11, 1952, in Caerleon, Monmouthshire) is a British author of several role-playing game-based products and novels. Most of his role-playing works were published between 1987 and 1996. He has authored many products for both the Dungeons & Dragons (particularly for the World of Greyhawk campaign setting), "Warhammer Fantasy Roleplay" and Shadowrun role-playing games. He also authored various Fighting Fantasy gamebooks and novels, some under the pseudonym Keith Martin. Sargent's departure from the gaming industry in the late 90s has been the subject of much speculation and curiosity among fans.
Sargent is also noted for holding a PhD in psychology (or experimental parapsychology), which he earned in 1979. He is known to have performed numerous ganzfeld experiments at the University of Cambridge. His published works in this field include Explaining the Unexplained: Mysteries of the Paranormal, co-authored with Hans Eysenck.