Nightfall or night fall may refer to:

Time of day Sunset or sundown, the daily disappearance of the Sun below the western half of the horizon Twilight, the period during which the Sun is at most 18° below the horizon and when the sky is illuminated by indirect sunlight scattered in the upper atmosphere Dusk, the last stage of twilight in the evening before night

Film Nightfall (1956 film), an American film noir by Jacques Tourneur Nightfall (1988 film), a film starring David Birney Nightfall (1999 film), a film starring Jeff Rector Nightfall (1999 German film), a film by Fred Kelemen Nightfall (2000 film), a film starring Ashish Vidyarthi Nightfall (2012 film), a Hong Kong crime thriller by Chow Hin-yeung

Gaming Nightfall (video game), the first real-time 3D adventure game, released in 1998 Nightfall Games, a UK role-playing game publishing company Guild Wars Nightfall, a 2006 computer game in the Guild Wars series Nightfall, a deck-building card game by Alderac Entertainment Group Nightfall: Escape, a first-person survival horror game by Zeenoh, released in 2016 Nightfall, a cancelled video game by Maxis South

Literature Stories and novels "Nightfall" (Asimov novelette and novel), a 1941 science fiction story by Isaac Asimov, and a 1990 adapted novel by Asimov and Robert Silverberg Nightfall and Other Stories, a 1969 collection of short stories by Asimov Night Fall (novel), a 2004 novel by Nelson DeMille Nightfall, a novel by Will Elliott Nightfall, a 1947 novel by David Goodis Nightfall, a 2017 fantasy book in the Keeper of the Lost Cities series by Shannon Messenger Nightfall, a two-novel fantasy series by Mickey Zucker Reichert The Return: Nightfall, a 2009 novel by L. J. Smith "Nightfall" (Clarke story), or "The Curse", a 1947 short story by Arthur C. Clarke "Nightfall", a 2003 short story incorporated into the 2005 Manfred Macx novel Accelerando by Charles Stross

Comics Nightfall (comics), a DC Comics supervillain Nightfall, a graphic novel by Scott O. Brown

Music Nightfall (band), a Greek heavy metal band Nightfall (Candlemass album), 1987 Nightfall (Louis Hayes album), 1991 Nightfall (Charlie Haden album), 2004 Nightfall (Little Big Town album), 2020 "Nightfall", a song by Amorphis from Tuonela "Nightfall", a song by Blind Guardian from Nightfall in Middle-Earth "Nightfall", a song by Circle of Dust from Circle of Dust "Nightfall", a song by The Devil Wears Prada from ZII "Nightfall", a song by the Incredible String Band from The Hangman's Beautiful Daughter "Nightfall", a song by Norther from Death Unlimited "Nightfall", a song by Stratovarius from Fourth Dimension "Nightfall", a song by Warkings from Armageddon "Nightfall", a song by Xandria from Sacrificium "Nightfall" (Interlude), a song by Tinashe from Aquarius "Nightfalls", a song by Keith Urban

Radio and television Nightfall (radio series), a 1980–1983 Canadian supernatural/horror series "Night Fall" (Yin-Yang-Yo!), an episode of the TV series Yin-Yang-Yo! "Nightfall", an episode of the radio program Dimension X, based on the Isaac Asimov story (see above) Operation Nightfall, a fictional operation in the first season of the TV series 24 Halo: Nightfall, a 2014 series set in the Halo universe

Other Nightfall meteorite, the colloquial name for the El Ali meteorite Nocturnal emission, a spontaneous orgasm during sleep that includes ejaculation for a male, or vaginal wetness or an orgasm (or both) for a female. Nightfall (missile), a British short-range ballistic missile

See also The Fall of Night (TV episode) 1995 episode of Babylon 5 Against the Fall of Night (novel) 1948 novel by Arthur C. Clarke The City and the Stars (novel) 1956 novel by Arthur C. Clarke, sometimes referred to as some variation of "fall of night" Beyond the Fall of Night (novel) 1990 novel by Gregory Benford, based on the work of Arthur C. Clakre Knightfall (disambiguation)