X is the 24th letter of the English alphabet.

X may also refer to:

<!--Organized per WP:LONGDAB-->

Art, entertainment, and media

Fictional entities

  • X (Dark Horse Comics), a character and its namesake series
  • X (Mega Man), protagonist of the Mega Man X video game series
  • X (The X-Files), a television series character
  • Radio X, the fictional radio station broadcasting the Grand Theft Auto: San Andreas soundtrack
  • X, a symbol used on treasure maps in fiction to show the location of the hidden treasure
  • X Marks the Spot (disambiguation)
  • X, a character from the fourth season of Battle for Dream Island, an animated web series
  • X Parasite, an element of the 2002 game Metroid Fusion

Film

  • X (1963 film), subtitled The Man with the X-Ray Eyes, an American science fiction film
  • X (1986 film), a Norwegian drama directed by Oddvar Einarson
  • X (1996 film), an anime film directed by Rintaro, based on the X manga by CLAMP
  • X (2022 film), an American horror film directed by Ti West
  • X the Unknown, a 1956 British science fiction horror film
  • X, alternate title for Malcolm X (1992 film), by Spike Lee
  • X: Night of Vengeance, a 2011 thriller by Australian director Jon Hewitt
  • X: Past Is Present, a 2015 Indian anthology film
  • X rating, a designation for adult-only films

Television

  • Kamen Rider X, a Japanese series in the Kamen Rider franchise
  • Ultraman X, a 2015 Japanese tokusatsu series
  • X (TV series), a Japanese anime series based on the X manga by CLAMP
  • X, the production code for the 1966 Doctor Who serial The Ark

Video games

  • X (1992 video game) a 3D game for the Nintendo Game Boy console
  • X (video game series), a science fiction space simulator series by Egosoft
  • X (Xbox show), an annual trade show hosted by Microsoft

Literature

  • X (Cage book), by avant garde composer John Cage
  • X (magazine), a quarterly review of literature and the arts
  • X (manga), a 1992 Japanese manga by CLAMP
  • X (Grafton novel), 2015, by Sue Grafton
  • X (young adult novel), 2015, by Ilyasah Shabazz and Kekla Magoon
  • X: A Fabulous Child's Story, a 1972 short story and 1978 picture book by Lois Gould
  • X: Or, Betty Shabazz v. The Nation, a 2017 play by Marcus Gardley
  • The 'X' Documents, a 1974 collection of British reports on German opposition to Hitler based on meetings with Carl Friedrich Goerdeler
  • X' Stands for Unknown, a 1984 collection of science essays by Isaac Asimov

Music

Bands

  • X (American band), a punk band
  • X (Australian band), a punk band
  • X Japan, Japanese metal band, originally named X from 1982–1992
  • X:IN, multinational girl group based in South Korea

Albums

  • X (Klaus Schulze album), 1978
  • X (Gnags album), 1983
  • X (INXS album), 1990
  • X (K-Ci & JoJo album), 2000
  • X (Def Leppard album), 2002
  • X (Anna Vissi album), 2002
  • X (Kristeen Young album), 2004
  • X the album, a Christian compilation album series starting in 2004
  • X (Liberty X album), 2005
  • X (Intocable album), 2005
  • X (Fourplay album), 2006
  • X (Kylie Minogue album), 2007
  • X (Trace Adkins album), 2008
  • X (Spock's Beard album), 2010
  • X (Royal Hunt album), 2010
  • X (Roll Deep album), 2012
  • X (The 69 Eyes album), 2012
  • X (Chris Brown album), 2014
  • x (Ed Sheeran album) (read as "Multiply"), 2014
  • X (Agnez Mo album), 2017
  • X (The Driver Era album), 2019
  • X (Ken Carson album), 2022
  • X (Stam1na album), 2023
  • X (Lucki mixtape), 2015
  • X (mixtape), by pH-1, 2020
  • X, a Philippine hip-hop album by Ex Battalion
  • X (Nonpoint album), 2018
  • X: The Godless Void and Other Stories, 2020, by ...And You Will Know Us by the Trail of Dead
  • Ten (Sault album), (also styled X) 2022
  • X, a 2025 studio album by Maya Berović
  • X, a 2024 extended play by Maya Berović

Operas

  • X, The Life and Times of Malcolm X, 1986

Songs

  • "X", a song by Miss Li
  • "X" (21 Savage and Metro Boomin song)
  • "X" (Chris Brown song)
  • "X" (Jonas Brothers and Karol G song)
  • "X" (Liberty X song)
  • "X" (Nicky Jam and J Balvin song)
  • "X" (Poppy song)
  • "X" (Xzibit song)
  • "X" (Arca song)
  • "X", a song from the album The Circle by B'z
  • "X", a song from the album Neysluvara by Hatari
  • "X", a song from the album Undeniable by Hellyeah
  • "X", a song from the album Pain Is Love by Ja Rule featuring Missy Elliott and Tweet
  • "X", a song from the album Future History by Jason Derulo
  • "X", a song from the album Luv Is Rage 2 by Lil Uzi Vert
  • "X", a song from the extended play The Code by Monsta X
  • "X", a song from the album The Magic Position by Patrick Wolf
  • "X", a song from the album Angels & Demons by Peter Andre
  • "X", a song from the album Black Panther by ScHoolboy Q, 2 Chainz, Saudi, and Kendrick Lamar
  • "X", a song from the album X by Stam1na
  • "X", a song from the album Toxicity by System of a Down
  • "X", a song from the album Blue Blood by X Japan
  • "X", a song from the album In the Court of the Dragon by Trivium
  • "X", a song from the album X by Ken Carson

Stations

  • WXNY-FM, known as "La X 96.3", a Spanish radio station in New York City
  • XETRA-FM/91.1 MHz, licensed to Tijuana, using the moniker "91X".
  • Radio X, a British radio station which grew out of the former XFM

Roller coasters

  • X2 (roller coaster), at Six Flags Magic Mountain, formerly known as X
  • The Walking Dead: The Ride in Thorpe Park, England, formerly known as X

Companies

  • X Development, Google's in-house incubator established in 2010
  • X Corp., the parent company of the social network X
  • X.com (bank), the predecessor to PayPal
  • X.Org Foundation, a non-profit corporation responsible for developing the X Window System
  • X, the stock symbol for United States Steel Corporation

Other organizations

  • X (demo party), a Dutch demoscene party which started in 1995
  • Organization X, a resistance organization active during the Axis occupation of Greece and the Greek Civil War
  • X University, informal interim name of Toronto Metropolitan University, formerly Ryerson University
  • x:talk, London-based cooperative network project to support migrant sex workers

Language script and phonetic

  • X, a typographical approximation the Greek letter chi (Χ)
  • Kha (Cyrillic), a letter of the Cyrillic script
  • x, used in the International Phonetic Alphabet for the voiceless velar fricative
  • , used in the International Phonetic Alphabet for the voiceless uvular fricative

People

In arts and entertainment

  • Director X (born 1975), Canadian music video director, also known as X and Little X
  • Márcia X (1959–2005), Brazilian performer and visual artist
  • Princess X (musician), former stage name of musician Liza Fox (active since 2010)
  • DMX (rapper) (1970–2021), American rapper commonly referred to as "X"
  • Shaun Ryder (born 1962), English musician also known as X
  • Terminator X (born 1966), stage name for American DJ Norman Roberts, who worked with Public Enemy
  • XXXTentacion (1998–2018), American rapper commonly referred to as "X"
  • X, ring name of wrestler Carl Ouellet (born 1967)

Other people

  • X González (born 1999), American gun control activist
  • Clyde X (1931–2009), Nation of Islam official
  • Khoisan X (1955–2010), political activist
  • Laura X (born 1940), feminist historian
  • Malcolm X (1925–1965), civil rights activist
  • Michael X (1933–1975), activist and criminal
  • Xiuhtezcatl Martinez (born 2000), climate activist, often known as "X"
  • X, the girl in the X Case, a landmark court case about abortion in Ireland
  • X, pseudonymous author of the 1947 Foreign Affairs "X Article", formally titled "The Sources of Soviet Conduct"
  • X, surname often assumed by members of the Nation of Islam

Science, technology, and mathematics

Astronomy

  • X, signifying a comet of unknown orbit
  • Galaxy X (galaxy), a postulated dark galaxy
  • Planet X, a hypothesised planet in the outer solar system

Computing

  • OS X (pronounced 'OS ten'), former name of the Apple macOS operating system
  • X Window System, referred to as X or X11, a client-server display protocol often used in UNIX environments
  • X file format, used by DirectX
  • X, the mnemonic for the execute instruction on the TI-990 and the TMS9900
  • X#, a High-level assembler for the x86 processor architecture as part of the Cosmos operating system

Mathematics

  • X, Roman numeral for 10, a number
  • x, an axis in the Cartesian coordinate system
  • x, a variable for unknown or changing concepts in mathematics
  • A typographical approximation for:
  • Cross product (×)
  • Multiplication sign (× or ✕)

Physics

  • X (charge), a conserved quantum number in particle physics
  • X band, part of the microwave band of the electromagnetic spectrum
  • X unit, unit of length in physics

Other uses in science, technology, and mathematics

  • × (or x), used in some types of hybrid names in botany
  • X chromosome, a sex determinant in many animal species, including mammals
  • X, the pseudoelement symbol for a halogen or halide in organic chemistry

Automobiles

  • Tesla Model X, an electric crossover by Tesla
  • HiPhi X, an electric crossover automobile produced from 2020
  • Zeekr X, a battery electric compact crossover SUV
  • BMW X models, a series of SUV models

Other uses

  • Generation X, the Western sociological generation born after Boomers or Jonesers and before Millennials
  • iPhone X, a smartphone by Apple Inc.
  • X (fragrance), a fragrance set by Irish pop vocal band Westlife
  • X (gender identity), used on passports and identification documents to denote intersex or indeterminate gender
  • XVideos, an Internet pornography video sharing and viewing website
  • X (social network), formerly "Twitter", known as X since 2023, an American social networking service
  • Twitter under Elon Musk
  • X mark, a common written symbol of negation or affirmation
  • X, the symbol for a strike in bowling
  • X, a handwritten symbol for a kiss
  • X, a street name for the drug MDMA
  • X, often used by straight edgers to show their commitment to their lifestyle
  • ╳, a box-drawing character
  • Ⓧ, a Japanese typographic symbol used in resale price maintenance
  • X, the legal signature of an illiterate person
  • Nilgiri Mountain Railway X class
  • Fujica X-mount, a bayonet lens mount used on manual-focus Fujica 35mm film SLR cameras in the 1970s and 1980s
  • Fujifilm X-mount, a fully electronic bayonet lens mount used on Fujifilm mirrorless APS-C digital cameras and XF lenses since 2012

<!--Organized per WP:LONGDAB-->

See also

  • The X (disambiguation)
  • TEN (disambiguation)
  • 10 (disambiguation)
  • Xs (disambiguation)
  • X's (disambiguation)
  • X force (disambiguation)
  • X.com (disambiguation)
  • XX (disambiguation)
  • XXX (disambiguation)
  • XXXX (disambiguation)