• Power outage, an intentional or unintentional loss of electric power
• Blackout (broadcasting), a regulatory ban on the broadcasting of an event
• Blackout (fabric), a textile material that blocks light
• Blackout (wartime), the practice of minimizing outdoor lighting for protection from attack
• Communications blackout, a halt to communication abilities or utilization
• Media blackout, censorship of news related to a certain topic

• Blackout (drug-related amnesia)
• Blackout or lost time, a common symptom of dissociative amnesia and dissociative identity disorder
• Syncope (medicine), a loss of consciousness, also known as fainting

Novels

• Blackout (Buffy novel), a 2006 novel based on the TV series Buffy the Vampire Slayer
• Blackout (Connie Willis novel), first of a two-part series
• Blackout (Grant novel), third novel of a series by Mira Grant
• Blackout (Elsberg novel), a disaster thriller by Marc Elsberg
• Blackout (picture book), a 2011 children's novel by John Rocco
• Black Out (novel), a 2008 novel by Lisa Unger
• Blackout, a novel by Campbell Armstrong

Films

• Blackout, American title of Contraband, a British wartime spy film starring Conrad Veidt and Valerie Hobson
• Blackout (1942 film), a 1942 Bollywood film
• Blackout (1950 film), a British film
• Murder by Proxy, a 1954 film also known as Blackout
• Black Out (1970 film), a Swiss film
• Blackout (1985 film), an American television film starring Keith Carradine
• Blackout (1986 film), a Norwegian film directed by Erik Gustavson and starring Henrik Scheele
• Blackout (1988 film), an American thriller film starring Gail O'Grady
• The Blackout (1997 film), an American film directed by Abel Ferrara
• Black Out p.s. Red Out, a 1998 Greek film
• Blackout (2007 film), an American television film starring Jeffrey Wright and Zoe Saldana set during Northeast Blackout of 2003
• Blackout (2008 American film), a horror film starring Amber Tamblyn and Aidan Gillen
• Blackout (2008 Finnish film), a Finnish film
• The Blackout (2009 film), an American horror film
• Blackout (2010 film), a German TV action film
• Black Out (2012 film), a Dutch crime action comedy
• The Blackout (2013 film), an American comedy starring Michael Graziadei and Autumn Federici
• Blade Runner Black Out 2022 (2017 short film) film set in the Blade Runner universe

Television

• Blackout (game show), a 1988 game show
• "The Blackout", a 2000 episode of Black Books
• Blackout (TV series), a 2012 BBC One series
• Blackout, a 2015 episode of the American Experience series on PBS
• "Blackout" (M.A.S.K. episode), a 1985 episode of M.A.S.K.
• "Blackout!" (Ugly Betty), an episode of the American TV series Ugly Betty
• "Blackout" (Bugs), an episode of the BBC TV series Bugs
• "Blackout" (Lego Ninjago: Masters of Spinjitzu), an episode of Lego Ninjago: Masters of Spinjitzu

Music

Bands and record labels

• Blackout Records, a record label
• The Blackout (band), a Welsh alternative rock band
• The Blackouts, a Seattle post-punk band
• Blackout (musical group), a Rock Against Communism (RAC) band
• Blackout (musician), American record producer, engineer and composer

Albums

• Black Out (The Good Life album), 2002
• Blackout (Britney Spears album), 2007
• Blackout (Dominion album)
• Blackout (Dropkick Murphys album), 2003
• Blackout (Steffany Gretzinger album), 2018
• Blackout (Hed PE album)
• Blackout (Scorpions album), 1982
• Blackout (The Brilliant Green album), 2010
• Blackout (Affiance album)
• Blackout! (Method Man & Redman album)
• Blackouts (Ashra album), a 1978 album by Manuel Göttsching, originally released by the band Ashra
• The Blackout (album), an album by Derek Minor

Songs

• "Blackout" (David Bowie song), 1977
• "Blackout" (Breathe Carolina song), 2011
• "Blackout" (Linkin Park song), 2010
• "Blackout" (Wretch 32 song), 2013
• "Blackout", by Asian Kung-Fu Generation on the album Fanclub
• "Blackout", by British Sea Power on the album The Decline of British Sea Power
• "Blackout", by Lupe Fiasco on the album Lupe Fiasco's The Cool
• "Blackout", by Funkaors on the album The Greatest Hits
• "Blackout", by Hybrid on the album Morning Sci-Fi
• "Blackout", in the musical In the Heights
• "Blackout", by Lovedrug on the album Pretend You're Alive
• "Blackout", by Mashonda from her debut Japan only album January Joy
• "Blackout", by Heidi Montag on the album Superficial
• "Blackout", by Muse on the album Absolution
• "Blackout", by Parkway Drive on the album Killing with a Smile
• "Blackout", by Pepper on the album Pink Crustaceans and Good Vibrations
• "Blackout", by Scorpions on the album Blackout
• "Blackout", by Senses Fail on the album Life Is Not a Waiting Room
• "Blackout", by The Whip on the album X Marks Destination
• "Blackout", by Unsraw from the EP Calling
• "Blackout", by Australian pop singer Bonnie Anderson