Look up XO or xo in Wiktionary, the free dictionary.

Xo or XO may refer to:

• 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

• "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

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

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

• 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

• 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

• 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
• XOXO (disambiguation)

This disambiguation page lists articles associated with the title XO.
If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.