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Maniac (from Greek μανιακός, maniakos) is a pejorative for an individual who experiences the mood known as mania. In common usage, it is also an insult for someone involved in reckless behavior.

Maniac may also refer to:

Film

• Maniac (1934 film), an exploitation film directed by Dwain Esper
• Maniac (1963 film), directed by Michael Carreras
• The Ransom (aka Maniac!), 1977 film with Oliver Reed
• Maniac (1980 film), directed by William Lustig
• Maniac (2011 film), directed by Shia LaBeouf
• Maniac (2012 film), a remake of the 1980 film

Literature

• Maniac, a 1995 novel by John Peel
• The MANIAC, 2023 novel by Benjamin Labatut

Television

• Maniac (Norwegian TV series), a Norwegian television series
• Maniac (miniseries), an American TV series based on the Norwegian series

Medicine

• Melanocytic nevus with intraepidermal ascent of cells

Games

• Ideal Maniac, a handheld electronic LED game created by the Ideal Toy Company

Music

• Maniac (producer), grime producer from London
• Stage name of Norwegian musician Sven Erik Kristiansen
• Maniac (band), a band from Los Angeles, California, US

Sports

• Maryland Maniacs, a United States indoor football team
• "Maniac" Mike Davis (1956–2001), American professional wrestler
• "Maniac" Jimmy Deo, a professional wrestler; one half of the tag-team Assault and Battery
• The Maniacs, Ultras group of FK Željezničar Sarajevo
• Shaquille Leonard (born 1995), American football player

Other

• MANIAC I, an early computer

See also

• Mania (disambiguation)
• Maniacal (disambiguation)
• Manniac, a 2005 film directed by Ingo Trendelbernd
• All pages with titles beginning with Maniac
• All pages with titles containing Maniac