Doctor X may refer to: * ''Doctor X'' (film), a 1932 Technicolor film starring Lee Tracy, Fay Wray and Lionel Atwill *

Alan E. Nourse Alan Edward Nourse (August 11, 1928 – July 19, 1992) was an American science fiction writer and physician. He wrote both juvenile and adult science fiction, as well as nonfiction works about medicine and science. His SF works sometimes focused ...

, who used "Doctor X" as the pseudonym of his 1965 journal ''Intern'' *

Doctor X (wrestler) Clemente Marcelino Valencia Nájera (17 July 1968 – 11 October 2011) was a Mexican '' luchador enmascarado'', or masked professional wrestler, better known by the ring name Doctor X, under which he worked for the Mexican professional wrestling ...

, ring name of Mexican professional wrestler Clemente Valencia * "Doctor X", a ring name of professional wrestler

Dick Beyer Richard John Beyer (July 11, 1930 – March 7, 2019) was an American professional wrestler who is best known by his ring names, The Destroyer and Doctor X. Among other places, he worked extensively in Japan and in 2017 he was awarded one of th ...

* "Doctor X", a ring name of professional wrestler

Tom Prichard Thomas Prichard (born August 18, 1959) is a retired American professional wrestler and author. He is the older brother of Bruce Prichard. Professional wrestling career Early career (1979–1986) Tom Prichard began his career in Los Angeles ...

Dr. X (Action Man) The following article is a list of characters who have appeared in various media across the Action Man franchise, including the original Palitoy toyline, the subsequent Hasbro toy line, the Panini Comics series, various video games, and the two ...

, the arch-enemy of the 1993–2006 Action Man revival toy line * Dr. X, a pseudonym for Doctor

Mario Jascalevich The "Dr. X" killings were a series of suspicious deaths by curare poisoning, in 1966 at a Bergen County, New Jersey hospital. A newspaper investigation during the mid-1960s led to the indictment of an Argentina-born physician, Mario Enrique Jascalev ...

, accused of several patient murders * Dr. X, the primary antagonist of the Queensryche albums '' Operation: Mindcrime'' and '' Operation: Mindcrime 2'' * Dr. X, a mysterious illicit nanotechnology specialist from Neal Stephenson's novel ''

The Diamond Age ''The Diamond Age: Or, A Young Lady's Illustrated Primer'' is a science fiction novel by American writer Neal Stephenson. It is to some extent a Bildungsroman or coming-of-age story, focused on a young girl named Nell, set in a future world in ...

'' * ''Doctor-X'' (TV series), a Japanese medical drama *

Ted Mosby Theodore Evelyn Mosby is a fictional character and the protagonist in the American sitcom ''How I Met Your Mother'', portrayed by Josh Radnor. He serves as the show's narrator from the future, voiced by Bob Saget, as he tells his children the " ...

, ''How I Met Your Mother'' character whose aliases include Doctor X

See also