Xo or XO may refer to:

Arts and entertainment

  • XO (group), British girl group
  • XO (record label), founded by the Weeknd
  • XO (Elliott Smith album), 1998
  • XO (Leathermouth album), 2009
  • X-O Manowar, a Valiant Comics superhero
  • Super Robot Wars XO, a 2006 tactical role-playing video game
  • Xiomara "Xo" Villanueva, a character on Jane the Virgin, an American satirical telenovela

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Songs

  • "XO" (song), 2013, by Beyoncé from her self-titled studio album
  • "XO", 2005, by Fall Out Boy from the album From Under the Cork Tree
  • "XO", 2010, by Mike Posner from the album 31 Minutes to Takeoff
  • "XO", 2015, by The Eden Project
  • "XO", 2022, by girl group Citizen Queen
  • "Xo", 2022, by Stand Atlantic from the album F.E.A.R.
  • "XO (Only If You Say Yes)", by K-pop boy group Enhypen
  • "X.O.", 1996, by Luniz from the film soundtrack Original Gangstas
  • "XO / The Host", 2011, by the Weeknd from his third mixtape Echoes of Silence

Businesses

  • XO Communications, a telecom company
  • XO Group, a media company

Food and drink

  • XO sauce, a spicy seafood-based dressing sauce
  • XO (extra old), a grade of cognac liquor

Science and technology

  • XO Telescope or its exo-planet survey
  • OLPC XO, a laptop produced by the One Laptop per Child association
  • XO sex determination system, a chromosomal system used to designate sex of some species of insects, arachnids, and mammals
  • XO, heterogametic male designation under this system
  • Turner syndrome, a genetic condition in which one of the sex chromosomes is absent
  • Xanthine oxidase, an enzyme that catalyzes the oxidation of hypoxanthine to xanthine
  • Xylenol orange, a chemical indicator for metal ions, used in titrations
  • Crystal oscillator (deprecated abbreviation: XO), an electronic circuit

Other uses

  • Executive officer or XO, as in a military or police force
  • Hugs and kisses or XO
  • LTE International Airways's IATA airline code
  • Miami XO, American rapper

See also

  • Chi Omega ("ΧΩ"), a National Panhellenic Conference women's fraternity
  • Executive order (disambiguation), an edict by a member of the executive branch of a government
  • Exo (disambiguation), multiple terms
  • OX (disambiguation)
  • Tic-tac-toe, a game using X's and O's
  • X's and O's (disambiguation)
  • Xbox One (XBO), a video game console by Microsoft<!--(fails WP:DABACRO)-->
  • XOXO (disambiguation)