John Doe was an American television series that aired on The Fox Network during the 2002–2003 TV season. It currently airs sporadically in the U.S. on SCI FI.

John Doe (born John Nommensen Duchac on February 25, 1954 in Decatur, Illinois) is the founder of the seminal L.A. punk band X/, and trying to sing like Jim Morisson. His musical compositions and performances are varied, including country and folk music. Doe also performs with the country-folk-punk band The Knitters.

John Doe (2002-2003) is a television program formerly aired by Fox. It featured the exploits of John Doe, played by Dominic Purcell, an amnesiac with beyond encyclopedic knowledge of anything factual in the universe.

Jonathan Doe is a fictional serial killer from the movie Se7en. He is portrayed by Kevin Spacey.

"John Doe" is the thirty-sixth episode of the American television series Prison Break and is the fourteenth episode of its second season. The episode was aired on January 22, 2007 after a seven-week break. It was written by Matt Olmstead and Nick Santora, and directed by Kevin Hooks.