X3 may refer to:

Arts, entertainment, and media

Films

* '' X-Men: The Last Stand'', also known as ''X3'' and ''X-Men 3'', the third film in the comic book film series * '' XXX: Return of Xander Cage'', a 2017 American film directed by D. J. Caruso

Literature and publications

* ''X3'', a collection of three science fiction novellas by

Gary A. Braunbeck Gary A. Braunbeck (born July 1, 1960) is an American science fiction, fantasy, mystery and horror author. Biography Braunbeck was born in Newark, Ohio (the city that serves as the model for the fictitious Cedar Hill in many of his stories). He ...

Music

* X3 (group), a short-lived Australian girl group, circa 2000 * ''X3'' (album), a 2004 solo album by Japanese pop singer Aya Matsuura

Video games

* '' X-Men: The Official Game'', a 2006 videogame prequel to ''X-Men: The Last Stand'' * '' X³: Reunion'', a space simulation computer game ** '' X³: Terran Conflict'', a sequel to ''X³: Reunion'' *** '' X³: Albion Prelude'', an addon to ''X³: Terran Conflict'' * '' Dance Dance Revolution X3'', a 2011 music video game by Konami * ''

Mega Man X3 ''Mega Man X3'' (stylized as ''MEGA MAN X³''), known as in Japan, is a 1995 action game, action-platformer, platform game released by Capcom for the Super Nintendo Entertainment System (SNES). The game was originally released in Japan on Decem ...

'', a 1995 platforming game in Capcom's ''Mega Man X'' series

Electronics

Instruments

* Korg X3, a synthesizer

Phones

* Kyocera X3, an

Android One Android One was a family of third-party Android smartphones promoted by Google. In comparison to many third-party Android devices, which ship with a manufacturer's customized user interface and bundled apps, these devices run near-stock ver ...

smartphone by Kyocera * Mobile phone models by Nokia **

Nokia X3-00 Nokia X3-00 (also known as ''Nokia X3''), is a multimedia-oriented mobile phone produced by Nokia. It comes with stereo-wide speakers, built-in FM radio with RDS, a standard 3.5 mm audio jack, media player and 3.2 megapixel camera. The pho ...

or Nokia X3 **

Nokia X3 Touch and Type The Nokia X3 Touch and Type also known as Nokia X3-02 is a mobile phone handset produced by Nokia. This is the first mobile handset released by Nokia that possesses a touchscreen in a "candybar" phone form factor. It is also the first touchscreen ...

or Nokia X3-02

Sensors

Foveon X3 sensor The Foveon X3 sensor is a digital camera image sensor designed by Foveon, Inc., (now part of Sigma Corporation) and manufactured by Dongbu Electronics. It uses an array of photosites that consist of three vertically stacked photodiodes. Each ...

, a layered image sensor design

Mathematics, science, and technology

Astronomy

Cygnus X-3 Cygnus X-3 is a high-mass X-ray binary ( HMXB), one of the stronger binary X-ray sources in the sky. It is often considered to be a microquasar, and it is believed to be a compact object in a binary system which is pulling in a stre ...

, a binary x-ray source in the sky

Computer science

* X3, one former name of a subcommittee of ANSI, now

International Committee for Information Technology Standards The InterNational Committee for Information Technology Standards (INCITS), (pronounced "insights"), is an ANSI-accredited standards development organization composed of Information technology developers. It was formerly known as the X3 and NCIT ...

(INCITS) * X3 (code) aka Excess-3, a binary code also termed Stibitz code * XKO X3, an ERP software

Mathematics

* X³, the mathematical

cubic function In mathematics, a cubic function is a function of the form f(x)=ax^3+bx^2+cx+d, that is, a polynomial function of degree three. In many texts, the ''coefficients'' , , , and are supposed to be real numbers, and the function is considered as ...

Transportation

Aircraft

Douglas X-3 Stiletto The Douglas X-3 Stiletto is a 1950s United States experimental jet aircraft with a slender fuselage and a long tapered nose, manufactured by the Douglas Aircraft Company. Its primary mission was to investigate the design features of an aircraft ...

, an experimental jet aircraft *

Eurocopter X3 Airbus Helicopters SAS (formerly Eurocopter S.A., trading as Eurocopter Group) is the helicopter manufacturing division of Airbus. It is the largest in the industry in terms of revenues and turbine helicopter deliveries, holding 48% of the wor ...

, an experimental compound helicopter

Automobiles

Beijing X3 The Beijing X3 or previously the Senova X35 is a subcompact crossover positioned above the smaller Senova X25 Subcompact crossover produced by BAIC Motor under the Senova sub-brand and later the Beijing sub-brand. First generation (2016-2018) ...

, a Chinese subcompact crossover SUV *

BMW X3 The BMW X3 is an SUV manufactured by BMW since 2003, based on the BMW 3 Series platform. BMW markets the car as a ''Sports Activity Vehicle'', the company's proprietary descriptor for its X-line luxury vehicles. The first-generation X3 was des ...

, a German compact SUV *

Cowin X3 The Cowin X3 is a compact CUV produced by the Chinese manufacturer Cowin Auto (subsidiary of Chery) since 2016. Overview The vehicle debuted as the Cowin i-CX concept at the Chengdu Auto Show in August 2014. The production car was unveiled a ...

, a Chinese compact SUV *

Geely Vision X3 The Geely Yuanjing X3 is a subcompact CUV produced by Chinese manufacturer Geely Auto. An electric variant featuring a special color and trim redesign was rebadged as the Geometry EX3 or Kungfu Cow under the Geometry brand from 2021. Overview ...

, a Chinese subcompact crossover * Jingyi X3, a Chinese subcompact crossover

Bus routes

X3 (New York City bus) The Metropolitan Transportation Authority (MTA) operates 80 express bus routes in New York City, United States. Express routes operated by MTA Bus Company are assigned multi-borough (BM, BxM, QM) prefixes. MTA New York City Bus operates seven ...

* X3, a Metrobus route in Washington, D.C. U.S.

IATA codes

TUI fly Deutschland TUI fly Deutschland (legally TUIfly GmbH), formerly ''TUIfly'', is a German leisure airline owned by the travel and tourism company TUI Group. It is headquartered at Hannover Airport with bases at several other German airports. TUI fly Deutschla ...

(IATA airline designator X3 since 2007) *

Hapag-Lloyd Express Hapag-Lloyd Express GmbH (previously also marketed as ''HLX.com'') was a Low-cost carrier, no-frills, high-frequency, express airline based in Langenhagen, Germany. It operated services within Germany and to destinations in Europe. On 15 January ...

(IATA airline designator X3, 2002-2007)

Motorcycles

Ilmor X3 The X3 ''(stylized as the X3)'' is an 800 cc V4 race bike built by Ilmor Engineering to compete in the 2007 MotoGP series. The X3 is the brainchild of Ilmor co-founder Mario Illien and former grand prix rider Eskil Suter Eskil Suter (bor ...

(also termed the X³), a MotoGP race motorbike

Spacecraft

* X-3, the Prospero (satellite) launched by the UK in 1971

Trains

* X3 (train), a Swedish train built by

Alstom Alstom SA () is a French multinational rolling stock manufacturer which operates worldwide in rail transport markets. It is active in the fields of passenger transportation, signaling, and locomotives, producing high-speed, suburban, regional ...

Watercraft

* HMS ''X3'', an

X-class submarine The X class was a World War II midget submarine class built for the Royal Navy during 1943–44. It was substantially larger than the original Chariot manned torpedo. Known individually as X-Craft, the vessels were designed to be towed to the ...

of the Royal Navy