Randall Garrett (December 16, 1927 - December 31, 1987) was an American science fiction and fantasy author. He was a prolific contributor to Astounding and other science fiction magazines of the 1950s and 1960s. He instructed Robert Silverberg in the techniques of selling large quantities of action-adventure science fiction, and collaborated with him on two novels about Earth bringing civilization to an alien planet.
Garrett is best known for the Lord Darcy books, the novel Too Many Magicians and two short story collections, set in an alternate world where a joint Anglo-French empire still led by a Plantagenet dynasty has survived into the twentieth century and where magic works and has been scientifically codified. The Darcy books are rich in jokes, puns, and references (particularly to works of detective and spy fiction: Lord Darcy is himself partially modelled on Sherlock Holmes), elements that often appear in the shorter works about the detective. Michael Kurland wrote two additional Lord Darcy novels.
Garrett wrote under a variety of pseudonyms including: David Gordon, John Gordon, Darrel T. Langart (an anagram of his name), Alexander Blade, Richard Greer, Ivar Jorgensen, Clyde Mitchell, Leonard G. Spencer, S. M. Tenneshaw, Gerald Vance. He was also a founding member of the Society for Creative Anachronism, as "Randall of Hightower" (a pun on "garret"). The short novel Brain Twister, written by Garrett in conjunction with author Laurence Janifer (using the joint pseudonym Mark Phillips) was nominated for the Hugo Award for Best Novel in 1960.
An inveterate punster (defining a pun as "the odor given off by a decaying mind"), he was a favorite guest at science fiction conventions and friend to many fans, especially in Southern California.
Garrett suffered an attack of encephalitis in the summer of 1979 and was not able to write after that; he spent the last years of his life in a coma.
In 1999, Randall Garrett won the Sidewise Award for Alternate History Special Achievement Award for the Lord Darcy series.
He was also ordained in the Old Catholic Church.
Glen Cook's private detective character Garrett P.I. is named in honor of Garrett.
Garrett's beard as depicted in a widely published photograph  closely resembles that of USSR scientist and developer of the first Soviet atomic program Igor Kurchatov. In Anything You Can Do (1962), the Nipe's ship crash-lands in Siberia, which also reminiscent of the Tunguska event. Thus in turn, an influence from the famous sci-fi Russian author Alexander Kazantsev might have been present in a young Garrett.
Murder and Magic (1979, collection of 1964—1973 stories)
Too Many Magicians (1966, magazine serialization 1966)
Lord Darcy Investigates (1981, collection of 1974—1979 stories)
Lord Darcy (1983) (this omnibus contains the contents of the three books above; 2002 edition adds 2 uncollected stories, with minor editing to remove repetitions of the backstory)
with Robert Silverberg, as Robert Randall
The Shrouded Planet (1957)
The Dawning Light (1959)
with Laurence M. Janifer, as Mark Phillips
Brain Twister (1962) 
The Impossibles (1963) 
Supermind (1963) 
The Gandalara Cycle with Vicki Ann Heydron
The Steel of Raithskar (1981)
The Glass of Dyskornis (1982)
The Bronze of Eddarta (1983)
The Well of Darkness (1983)
The Search for Ka (1984)
Return to Eddarta (1984)
The Gandalara Cycle I (omnibus; contains The Steel of Raithskar, The Glass of Dyskornis, The Bronze of Eddarta.) (1986)
The Gandalara Cycle II (omnibus; contains The Well of Darkness, The Search for Ka, Return to Eddarta.) (1986)
The River Wall (1986)
Pagan Passions (1959) (with Laurence Janifer as "Larry M. Harris")
Unwise Child (1962) 
Anything You Can Do (1963) (as Darrel T. Langart) 
Takeoff! (1980), composed of tongue-in-cheek imitations of a number of other authors and universes, such as E.E. "Doc" Smith's Lensman series and Reginald Bretnor's Ferdinand Feghoot (who is "Benedict Breadfruit" in Garrett's treatment).
The Best of Randall Garrett (1982) (edited by Robert Silverberg)
Takeoff Too! (1987)
A Little intelligence (2009; with Robert Silverberg, a collection of their early science-fctional mystery stories)
Notable short fiction
"Probability Zero" (1944) first published science fiction story.
"The Best Policy" (1957), in which a smart Earthling manages to convince a reconnaissance group of hostile aliens who abduct him that the earthlings are far more advanced and superior race, and instead of a hostile takeover, they send humble ambassadors. The catch is the aliens have a perfect truth detector and the hero has to phrase every line carefully so that while being literally honest he can pull off such a huge lie.
"Despoilers of the Golden Empire" (1958) , in which he spun a pulp yarn of space flight, swordplay, and derring-do, only to reveal it to be a deception, an account of the conquest of Peru by Francisco Pizarro with careful misdirection in the text.