Blackout

Loss of light, power, or communications

• Power outage, a large-scale disruption in electric power supply
• Rolling blackout, an intentionally-engineered power outage caused by insufficient resources to meet electricity demands
• Blackout (wartime), a deliberate reduction in lighting to protect a place from enemy attack
• Communications blackout, a military tactic of avoiding use of radio communication
• Internet blackout
• Blackout (broadcasting), a regulatory ban on the broadcasting of an event
• The simultaneous turning off of all stage lighting

Loss of consciousness or memory or vision

• Fainting
• G-LOC G force induced Loss of Consciousness
• Shallow water blackout
• Deep water blackout
• Blackout (alcohol-related amnesia)

In music

• Bands and record labels
• Black-Out, a Hungarian rock band
• The Blackout (band), a Welsh band
• Blackout Records, a record label
• Albums
• Blackout (Britney Spears album), 2007 album by Britney Spears
• Blackout (Scorpions album), album by Scorpions
• Blackout (Dropkick Murphys album), album by Dropkick Murphys
• Blackout (Dominion album), an album by Dominion
• Blackout!, an album by Redman and Method Man
• Black Out, an album by The Good Life
• Blackout (Hed PE album), an album by Hed PE
• Blaque Out, an album by Blaque
• Songs
• "Blackout" (David Bowie song), a song by David Bowie from Heroes
• "Blackout", a song by Muse from Absolution
• "Blackout", a song by Hybrid from Morning Sci-Fi
• "Blackout", a song by British Sea Power from The Decline of British Sea Power
• "Blackout", a song by Asian Kung-Fu Generation from Fanclub (album)
• "Blackout", a song by Scorpions from the album of the same name released in 1982.
• "Blackout", a song by Lupe Fiasco from the album Lupe Fiasco's The Cool.

In television and film

• Blackout (entertainer), the stage name of Michael Biggins
• Blackout (game show), an American game show
• The Blackout, an independent wrestling stable
• Blackout (comics), one of two Marvel characters
• Blackout (Transformers), a character in the Transformers universes
• Blackout (Eddy Matalon), the 1978 film, directed and written by Eddy Matalon
• Black Out (midnight heat), a 1996 film, also known as "A. K. A." and "Midnight Heat"
• The Blackout (film), a drama film (1997) directed by Abel Ferrara
• Blackout (film), the 2008 film
• Blackout gag, a comedy technique used predominantly in animated cartoons

In books and plays

• Blackout (Buffy novel), a Buffy the Vampire Slayer novel about the character Nikki Wood
• Blackout (play), a play by Michael Walker
• Blackout (novel), the 1996 novel by Campbell Armstrong

In cards and games

• Blackout or Oh Hell, a trick-taking card game
• Black Out game or Fainting game
• Blackout Rugby, a browser based rugby union management game
• Black out, a priest talent in the popular video game World of Warcraft.