A nightmare is a frightening dream.

Look up nightmare in Wiktionary, the free dictionary.

Nightmare(s) or The Nightmare may also refer to:

• Mare (folklore) or nightmare, a demon of Germanic folklore
• Night Mare, a 1983 novel by Piers Anthony
• The Nightmare, a painting by Henry Fuseli
• Nightmare (Marvel Comics), a fictional supernatural being
• Nightmare (Topčić novel), a 1997 Bosnian novel by Zlatko Topčić
• Nightmare (Brock novel), a 1932 novel by Lynn Brock
• Nightmare, a painting by Nicolai Abildgaard
• Nightmare, a horror comic from Skywald Publications
• Nightmare, a 1970 novel by Russell H. Greenan
• Nightmares!, a young adult book series co-authored by Jason Segel and Kirsten Miller
• Nightmare, a horror fiction magazine edited by John Joseph Adams
• The Nightmare, a 1954 collection of short stories by C. S. Forester about World War II

• Nightmare (Atmosfear series), a board game
• Nightmare (Devil May Cry), a demon in the video game series Devil May Cry
• Nightmare (Dungeons & Dragons), a creature in the role-playing game Dungeons & Dragons
• Nightmare (Kirby), a villain in the video game Kirby's Adventure
  • Parallel Nightmare, an alternate version of Nightmare who is the primary antagonist of Super Kirby Clash
• NightMare (scareware), an early scareware program
• Nightmare (Soulcalibur), a villain in the fighting game series Soulcalibur
• Nightmare, a boss in the video game The Legend of Zelda: Link's Awakening
• Nightmare, a boss in the video games Metroid Fusion and Metroid: Other M
• Nightmare, one of the antagonists of the survival horror game Five Nights at Freddy's 4
• Knight Mare, the name of a Dark-element Skylander from Skylanders: Trap Team

• A Nightmare, an 1896 French short silent film directed by Georges Méliès
• Nightmare (1942 film), mystery starring Diana Barrymore
• Nightmare (1956 film), psychological thriller starring Edward G. Robinson
• Nightmare (1964 film), suspense film from Hammer Films
• Nightmare (1965 film), a Swedish thriller film directed by Arne Mattsson
• Nightmares (1979 film), Polish film directed by Wojciech Marczewski
• Nightmares (1980 film), Australian horror film directed by John D. Lamond
• Nightmare (1981 film), "video nasty" slasher film
• Nightmares (1983 film), horror film starring Emilio Estevez
• Nightmare (2000 film) (Gawi), South Korean horror film
• Nightmare (2005 film), film produced by Morgan Pehme
• Nightmare (2011 film), Chinese horror film
• Nightmare (2012 film), Finnish horror thriller film
• The Nightmare (2015 American film), documentary by Rodney Ascher
• The Nightmare (2015 German film), drama film directed by Achim Bornhak

• Nightmare (French band), a power metal band
• Nightmare (Japanese band), a visual kei rock band
• Nghtmre (born 1990), American DJ and trap producer
• Nightmare Records, an American label founded by Lance King

• "Nightmares" (Buffy the Vampire Slayer), an episode of Buffy the Vampire Slayer
• "The Nightmare" (Dynasty), an episode of Dynasty
• "Nightmare" (1963 The Outer Limits), an episode of the original The Outer Limits series
• "Nightmare" (1998 The Outer Limits), an episode of the revived The Outer Limits series
• "Nightmare" (Supernatural), an episode of the television series Supernatural
• "Nightmare", an episode of The Avengers
• "Nightmare", an episode of Land of the Giants
• Nightmare, a fictional monster in the Brazilian telenovela Caminhos do Coração
• Nightmare, a robot that competed in the series BattleBots
• "Nightmares", an episode of the television series, Off the Air
• "Nightmares", an episode of the television series MacGyver

• Vanes Martirosyan (born 1986), Armenian-born American boxer
• Diego Sanchez (born 1981), American mixed martial artist
• Nghtmre or Tyler Marenyi (born 1990), an American DJ and electronic dance music producer
• KSI (born 1993), a British YouTuber, boxer, and musician

• Knightmare (disambiguation)
• Night terror, a sleep disorder
• Nightmare disorder, a sleep disorder
• Nightmare flip, a skateboarding trick
• All pages with titles beginning with Nightmare

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