Psycho may refer to:

• Psychopath
• Sociopath
• Someone with a personality disorder
• Someone with a psychological disorder
  • Someone with psychosis

• Karl Amoussou or Psycho, mixed martial artist
• Peter Ebdon or Psycho, English snooker player
• Steve Lyons (baseball) or Psycho, utility baseball player
• Jacob Noe or The Psycho, mixed martial artist
• Stuart Pearce or Psycho, English football player and manager
• Bull Pain or Psycho, American professional wrestler
• Psycho (wrestler), Japanese professional wrestler

• Krieg the Psycho, video game character in Borderlands 2
• Sgt. Michael "Psycho" Sykes, video game character in Crysis
• The Psycho, video game character in Until Dawn
• Psycho Weasel, film character in Who Framed Roger Rabbit

• Psycho (franchise), an American horror thriller film franchise based on the Bloch novel
  • Psycho (1960 film), a film by Alfred Hitchcock
  • Psycho (1998 film), a remake of the original film by Gus Van Sant starring Vince Vaughn
• Psycho (2008 film)
• Psycho (2013 film)
• Psycho (2020 film)

• Psycho (novel), a 1959 book by Robert Bloch
• Psycho (brand), a Japanese visual novel studio
• PsychoPublishing, an imprint of the German group VDM Publishing

• Psycho Records a late 1970s UK record label
• The Psychos, a New York hardcore band
• Psycho (soundtrack), the soundtrack album to the 1998 remake of Psycho
• Psycho (album), an album by That's Outrageous!

• "Psycho" (Anne-Marie and Aitch song)
• "Psycho" (Dixie D'Amelio song)
• "Psycho" (Lords of the Underground song)
• "Psycho" (Imelda May song)
• "Psycho" (Muse song)
• "Psycho" (Maisie Peters song)
• "Psycho" (Post Malone song)
• "Psycho" (Puddle of Mudd song)
• "Psycho" (Red Velvet song)
• "Psycho" (Hardy song)
• "Psycho", by Breaking Benjamin from Ember
• "Psycho", by Dave from Psychodrama
• "Psycho", by 50 Cent from Before I Self Destruct
• "Psycho", by iamnot from Whoami
• "Psycho", by Lower Class Brats
• "Psycho", by Leon Payne
• "Psycho", by Mia Rodriguez
• "Psycho", by Rebound!
• "Psycho", by Scooter from Back to the Heavyweight Jam
• "Psycho", by Soyeon, 2021
• "Psycho", by the Sonics
• "Psycho", by System of a Down from Toxicity
• "Psycho", by 12 Stones from Beneath the Scars

• Psychos (TV series), a British television drama broadcast in 1999
• Psycho Donuts, a donut store in Canada and Northern America
• Psychiatrist (game) or Psycho, a party game
• Psycho, a type of drug in the Fallout series of video games

• Syco, British entertainment company
• Psyco, a just-in-time compiler for the Python programming language
• Psy (disambiguation)
• Psych (disambiguation)
• Psyche (disambiguation)
• Psychic (disambiguation)
• Psychedelic (disambiguation)
• All pages with titles beginning with Psycho
• All pages with titles containing Psycho