Flicker may refer to:

• Flickers, woodpeckers of the subgenus Colaptes
  • Examples include: Andean flicker, Bermuda flicker (extinct), campo flicker, Chilean flicker, Fernandina's flicker, gilded flicker, and northern flicker

• Flicker (light), a perceptible change in brightness of a light source
• Flicker (screen), a darkness artifact that occurs on a video display not present in source material
• Flicker noise, electrical noise with a 1/f spectrum
• Flickering, possible behavior of a complex dynamical system as it approaches a critical transition
• Power-line flicker, a fluctuation in the voltage of AC power lines, whose compliance is regulated by IEC61000-3-3

• Flicker (surname), includes a list of notable people with the surname
• Flicker, the original bass guitarist for the band Manic Street Preachers

• Flicker (novel), by Theodore Roszak

• Flicker, a character in the cartoon and video game Blazing Dragons
• Flicker, a character in The Ice King of Oz and subsequent books by Eric Shanower

• Flicker (film) (stylized as FLicKeR), a 2008 Canadian film
• The Flicker, an experimental film created in 1965 by Tony Conrad

• Flicker, the sophomore album by Ayria
• Flicker (album), the debut studio album by Niall Horan; also the name of the title track
• "Flicker" (song), a song by Porter Robinson from the album Worlds
• "Flicker", a song by Audio Adrenaline from the album Some Kind of Zombie
• "Flicker", a song by Poppy from the album Zig
• Flicker Records, a record label belonging to Sony

• "Flicker" (American Horror Story), seventh episode of the fifth season of the anthology television series American Horror Story

• A remote control device (especially for televisions)
• A flyswatter

• Flicker, a 1973 pinball table made by Bally
• Flicker, a guitar tremolo made by ESP Guitars in the late 1970s and early 1980s
• USS Flicker, several ships of the United States Navy

• All pages with titles containing Flicker
• All pages with titles beginning with Flicker
• Flecker, a surname
• Flick (disambiguation)
• Flicka, a 2006 film based on the book My Friend Flicka
• Flickr, a digital photo sharing website and service