Robert Edward Vardeman (sometimes called Vardebob) (1947- ) is an American science fiction fan and writer. He got his start in writing by writing for science fiction fanzines, and was nominated for the 1972 Hugo Award for Best Fan Writer. Vardeman is one of the founders of Bubonicon, a science fiction convention in Albuquerque, New Mexico. He is the author of more than fifty fantasy and science fiction novels. He created the Cenotaph Road series of science fantasy novels; co-wrote the Swords of Raemllyn series (with George W. Proctor) and the The War of Powers series with Victor Milan; and wrote Ruins of Power, a Dark Age story. He wrote the original story novel Mutiny on the Enterprise focusing on Captain Kirk battling his own crew.
He wrote the Keys to Paradise fantasy series under the pseudonym "Daniel Moran," unaware of the existence of writer Daniel Keys Moran. He also wrote Gateway to Doom from Tom Swift III and The Microbots, part of the Tom Swift IV series of books; as well as writing numerous westerns under various pen names, including 'Karl Lassiter.
Vardeman is a longtime resident of Albuquerque, New Mexico. He graduated from the University of New Mexico with a B.S. in physics and a M.S. in materials engineering. He worked for Sandia National Laboratories in the Solid State Physics Research Department before becoming a full-time writer.