Red light
Red light or redlight may refer to:

Science and technology
Red, any of a number of similar colors evoked by light in the wavelength range of 630–740 nm
Red light, a traffic light color signifying stop
Red light, a color of safelight used in photographic darkrooms
Red light therapy

Arts and entertainment
Red Lights (novel) (Feux Rouges), a 1953 book by Georges Simenon

Film
Red Lights (1923 film), a 1923 American silent film
Red Light (film), a 1949 crime film starring George Raft
Red Lights (2004 film) (Feux rouges), a French thriller directed by Cédric Kahn
Red Lights (2012 film), a thriller by Rodrigo Cortés
Redlight (film), a 2009 documentary film

Music
Red Light, a sublabel of Tunnel Records
Redlight (musician) (born 1980), British electronic musician

Albums
Red Light (Bladee album), 2018
Red Light (f(x) album), 2014
Redlight (Grails album), 2004
Redlight (The Slackers album), 1997

Songs
"Red Light" (Linda Clifford song)
"Red Light" (David Nail song)
"Red Light" (Siouxsie and the Banshees song)
"Red Light" (U2 song)
"Red Light", by Fastball from Keep Your Wig On
"Red Light", by Jonny Lang from Long Time Coming
"Red Light", by Eddie Murphy, featuring Snoop Dogg
"Red Light", by The Strokes from First Impressions of Earth
"Red Light", by Wall of Voodoo from Dark Continent
"Redlight" (song), by Ian Carey
"Redlight", by Kelly Osbourne from Sleeping in the Nothing
"Red Lights" (song), by Tiësto
"Red Lights" (Stray Kids song)
"Red Lights", by Chloe x Halle from Sugar Symphony

Other uses
Redlight Children Campaign, an American non-profit organization
Common synonym for goals in ice hockey, derived from the red lamp behind the net activated to confirm a goal
André Racicot (born 1969), nicknamed "Red Light", retired ice hockey goalie
Operation Red Light II, a 2006 coalition military operation of the Iraq War

See also
Red-light district, a part of an urban area where there is a concentration of prostitution and sex-oriented businesses
Red Light Lizzie (fl. 1860–1875), a 19th-century madam and underworld figure in New York City
Red light/Green light, a traditional children's game
Red Lantern (disambiguation)
Green light (disambiguation)