Xo or XO may refer to:

Arts and Entertainment

XO (record label) XO (also known as XO Records) is a Canadian record label founded by singer the Weeknd, his managers Wassim Slaiby and Amir "Cash" Esmailian, and his creative director La Mar Taylor. Slaiby also is the CEO. As of 2012, it operates as a subsidi ...

, founded by the Weeknd * ''XO'' (Elliott Smith album), 1998 * ''XO'' (Leathermouth album), 2009 *

X-O Manowar X-O Manowar (Aric of Dacia) is a fictional superhero co-created by writers Jim Shooter and Steve Englehart, and artists Bob Layton and Barry Windsor-Smith. The eponymous comic book series published by Valiant Comics has sold more than 8 million c ...

, a Valiant Comics superhero * '' Super Robot Wars XO'', a 2006 tactical role-playing video game * Xiomara "Xo" Villanueva, a character on ''

Jane the Virgin ''Jane the Virgin'' is an American romantic comedy-drama and satirical telenovela developed by Jennie Snyder Urman. The series premiered October 13, 2014, on The CW and concluded on July 31, 2019. It is a loose adaptation of the Venezuelan te ...

'', an American satirical telenovela

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 ''From Under the Cork Tree'' is the second studio album by the American Rock music, rock band Fall Out Boy, released on May 3, 2005, by Island Records as the band's major label debut. The music was composed by lead vocalist and rhythm guitarist P ...

'' * "XO", 2010, by Mike Posner from the album ''

31 Minutes to Takeoff ''31 Minutes to Takeoff'' is the debut studio album by American singer Mike Posner. It was released on 10 August 2010, by J Records. The album includes the singles " Cooler Than Me", " Please Don't Go" and " Bow Chicka Wow Wow". Background Posn ...

'' * "XO", 2015, by The Eden Project * "XO", 2022, by girl group

Citizen Queen Citizen Queen is an American girl group formed in 2018 under the auspices of RCA Records, with mentorship from Pentatonix member Scott Hoying. Originally a five-member group, Citizen Queen consists of vocalists Kaedi Dalley, Cora Isabel, and N ...

* "XO (Only If You Say Yes)", by K-pop boy group

Enhypen Enhypen (; ; stylized in all caps) is a South Korean boy band formed by Belift Lab. Formerly a joint venture between CJ ENM and Hybe Corporation, the group was formed through the 2020 survival competition show '' I-Land''. The group consists ...

* "X.O.", 1996, by Luniz from the film soundtrack ''

Original Gangstas ''Original Gangstas'' is a 1996 action-gangster film filmed and set in urban Gary, Indiana starring Blaxploitation film stars such as Fred Williamson, Pam Grier, Jim Brown, Richard Roundtree, and Ron O'Neal. It is the final film directed by Lar ...

'' * "XO / The Host", 2011, by the Weeknd from his third mixtape ''

Echoes of Silence ''Echoes of Silence'' is the third mixtape by the Canadian singer-songwriter the Weeknd, released on December 21, 2011, by XO. Like his debut mixtape '' House of Balloons'' and his second mixtape ''Thursday'', the Weeknd collaborated with musi ...

Businesses

XO Communications XO Communications, LLC, previously Nextlink Communications, Concentric Network Corporation and Allegiance Telecom, Inc., was an American telecommunications Telecommunication, often used in its plural form or abbreviated as telecom, is the ...

, a telecom company *

XO Group The Knot Worldwide, formerly XO Group, The Knot Inc, and WeddingWire, Inc, is a global technology company that provides content, tools, products and services for couples who are planning weddings, organizing a celebration, and navigating pregnanc ...

, a media company

Food and drink

XO sauce XO sauce is a spicy seafood sauce from Hong Kong with an umami flavour. It is commonly used in southern Chinese regions such as Guangdong. History Developed in the 1980s in Hong Kong for Cantonese cuisine, XO sauce is made of roughly chopped d ...

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

Science and technology

XO Telescope The XO Project is an international team of amateur and professional astronomers tasked with identifying extrasolar planets. They are led by Peter R. McCullough of the Space Telescope Science Institute. It is primarily funded by NASA's Origins Pro ...

or its exo-planet survey *

OLPC XO The OLPC XO (formerly known as $100 Laptop, Children's Machine, 2B1) is a low cost laptop computer intended to be distributed to children in developing countries around the world, to provide them with Access to Knowledge movement, access to know ...

, 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 Turner syndrome (TS), commonly known as 45,X, or 45,X0,Also written as 45,XO. is a chromosomal disorder in which cells of females have only one X chromosome instead of two, or are partially missing an X chromosome (sex chromosome monosomy) lea ...

, a genetic condition in which one of the sex chromosomes is absent *

Xanthine oxidase Xanthine oxidase (XO or XAO) is a form of xanthine oxidoreductase, a type of enzyme that generates reactive oxygen species. These enzymes catalyze the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to ...

, an enzyme that catalyzes the oxidation of hypoxanthine to xanthine *

Xylenol orange Xylenol orange is an organic reagent In chemistry, a reagent ( ) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs. The terms ''reactant'' and ''reagent'' are often used int ...

, a chemical indicator for metal ions, used in titrations *

Crystal oscillator A crystal oscillator is an electronic oscillator Electrical circuit, circuit that uses a piezoelectricity, piezoelectric crystal as a frequency selective surface, frequency-selective element. The oscillator frequency is often used to keep trac ...

(deprecated abbreviation: XO), an electronic circuit

Other uses

Executive officer An executive officer is a person who is principally responsible for leading all or part of an organization, although the exact nature of the role varies depending on the organization. In many militaries and police forces, an executive officer ...

or XO, as in a military or police force * Hugs and kisses or XO *

LTE International Airways Lte International Airways S.A. (Lte Volar Airlines) was a Spanish charter airline based in Palma de Mallorca, Spain. It operated passenger charter services throughout Europe. Its main base was Son Sant Joan Airport, Palma de Mallorca with hubs a ...