Doctor X
# Doctor X

Doctor X may refer to:

* Doctor X (film), a 1932 Technicolor film starring Lee Tracy, Fay Wray and Lionel Atwill
* Alan E. Nourse, who used "Doctor X" as the pseudonym of his 1965 journal Intern
* Doctor X (wrestler), ring name of Mexican professional wrestler Clemente Valencia
* "Doctor X", a ring name of professional wrestler Dick Beyer
* "Doctor X", a ring name of professional wrestler Tom Prichard
* Dr. X (Action Man), the arch-enemy of the 1993–2006 Action Man revival toy line
* Dr. X, a pseudonym for Doctor Mario Jascalevich, 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
* Doctor-X (TV series), a Japanese medical drama
* Ted Mosby, How I Met Your Mother character whose aliases include Doctor X
