Insomnia is a sleep disorder.

Insomnia may also refer to:

• Insomnia Coffee Company, a chain of coffee shops in the Republic of Ireland
• Insomnia Cookies, a chain of bakeries in the US
• Insomnia Publications, a defunct UK comic-book publisher

• Insomnia (1997 film), a Norwegian thriller directed by Erik Skjoldbjærg
• Insomnia (2002 film), an American remake of the Norwegian film, directed by Christopher Nolan
• Insomnia, a Brazilian television show hosted by Jackeline Petkovic

• Insomnia (novel), a 1994 novel by Stephen King
• Insomnia, a 2005 short-story collection by Jeremy Robinson
• Insomnia, a 2015 poetry collection by Linda Pastan
• Insomnia (comics), a fictional character from DC Comics

• Insomnia (band), a Bengali rock band
• Insomnia (composition), an orchestral piece by Esa-Pekka Salonen, 2002
• Insomnia Festival, an annual electronic music festival in Tromsø, Norway

• Insomnia (Chihiro Onitsuka album), 2001
• Insomnia (Erick Sermon album), 1996
• Insomnia (Hed PE album), 2007
• Insomnia (Miach album) or the title song, 2023
• Insomnia (Skepta, Chip and Young Adz album), 2020
• Insomnia (soundtrack), from the 1997 film, by Biosphere
• Insomnia: The Best of Faithless or the title song (see below), 2009
• Insomnia (The Hiatus EP) or the title song, 2009
• Insomnia (Washington EP) or the title song, 2011
• Insomnia, by Deinonychus, 2004
• Insomnia, a mixtape by The Alchemist, 2003

• "Insomnia" (Craig David song), 2008
• "Insomnia" (Daya song), 2019
• "Insomnia" (Faithless song), 1995
• "Insomnia" (Feeder song), 1999
• "Insomnia", by Ashley Tisdale from Symptoms, 2019
• "Insomnia", by Atreyu from The Beautiful Dark of Life, 2023
• "Insomnia", by Audien, 2015
• "Insomnia", by Caroline Polachek from Pang, 2019
• "Insomnia", by Coldrain from The Side Effects, 2019
• "Insomnia", by Cynthia Alexander from Insomnia & Other Lullabyes, 1996
• "Insomnia", by Ellen Benediktson during Melodifestivalen 2015
• "Insomnia", by Haken from Visions, 2011
• "Insomnia", by In Hearts Wake from In Hearts Wake, 2015
• "Insomnia", by Jelena Karleuša from Diva, 2012
• "Insomnia", by Kamelot from Haven, 2015
• "Insomnia", by Koop Arponen from New Town, 2009
• "Insomnia", by L2, 2012
• "Insomnia", by Megadeth from Risk, 1999
• "Insomnia", by Parannoul from After the Magic, 2023
• "Insomnia", by Periphery from Periphery, 2010
• "Insomnia", by Pete Philly and Perquisite from Mindstate, 2005
• "Insomnia", by The Records from Shades in Bed (also known as The Records), 1979
• "Insomnia", by Silverchair from Young Modern, 2007
• "Insomnia", by Stray Kids from I Am Who, 2018
• "Insomnia", by Takeoff from The Last Rocket, 2018
• "Insomnia", by the Veronicas, a B-side of the single "Hook Me Up", 2007
• "Insomnia", by Yellow Magic Orchestra from Solid State Survivor, 1979
• "Insomnia", by Zayn from Icarus Falls, 2018

• Insomnia Gaming Festival, a UK video-gaming event run by Multiplay Ltd.
• Insomnia, an open-source API design and testing platform owned by Kong Inc.

• Insomniac (disambiguation)
• Insomnio (disambiguation)
• "Insomya", a song by the Eraserheads from Circus