Nightfall or night fall may refer to:
Sunset or sundown, the daily disappearance of the Sun below the western half of the horizon
Twilight, a time of day when the Sun is just below the horizon and the Earth is illuminated indirectly by sunlight scattering in the upper atmosphere
Dusk, the darkest stage of twilight in the evening
Nightfall (1957 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 (2000 film), a film starring Ashish Vidyarthi
Nightfall (2012 film), a Hong Kong crime thriller by Chow Hin-yeung
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
Stories and novels
Nightfall (Asimov short story and novel), a 1941 science fiction short story by Isaac Asimov, and later adaptations:
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 two-novel fantasy series by Mickey Zucker Reichert
The Return: Nightfall, a 2009 novel by L. J. Smith
"Nightfall", a 1947 short story by Arthur C. Clarke included in The Collected Stories of Arthur C. Clarke (2001)
"Nightfall", a 2003 short story incorporated into the 2005 Manfred Macx novel Accelerando by Charles Stross
Nightfall (comics), a DC Comics supervillain
Nightfall: The Black Chronicles, a 1999–2000 comic book mini-series published by Wildstorm/Homage Comics
Nightfall, a graphic novel by Scott O. Brown
Nightfall (band), a Greek heavy metal band
Nightfall (album), a 1987 album by Candlemass
Nightfall (Louis Hayes album), 1991
"Nightfall", a song by Amorphis from Tuonela
"Nightfall", a song by Blind Guardian from Nightfall in Middle-Earth
"Nightfall", a song by Stratovarius from Fourth Dimension
"Nightfall" (Interlude), a 7-second musical interlude by Tinashe from her album Aquarius
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
