X1, X-1 or X-one may refer to:

Transportation

Aircraft

Bell X-1 The Bell X-1 (Bell Model 44) is a rocket engine–powered aircraft, designated originally as the XS-1, and was a joint National Advisory Committee for Aeronautics– U.S. Army Air Forces–U.S. Air Force supersonic research project built by Be ...

, the first aircraft to exceed the speed of sound in controlled level flight

Automobiles

* BMW X1, a 2009–present German subcompact luxury SUV * Geely Yuanjing X1, a 2017–2021 Chinese mini crossover * Lada X-1, a 1981 Soviet concept MPV *

McLaren X-1 The McLaren MP4-12C, later known simply as the McLaren 12C, is a sports car that was designed and manufactured by McLaren Automotive. It was the first ever production car wholly designed and built by McLaren, and their first production roa ...

, a 2012 British one-off sports car based on the 12C *

Red Bull X1 The Red Bull X2010, originally named Red Bull X1, is a fictional prototype vehicle featured in the PlayStation 3 video games ''Gran Turismo 5'' and ''Gran Turismo 6''. A full-size, non-functioning model appeared at the Goodwood Festival of Speed ...

, the former name of the Red Bull X2010, a fictional car created for the game ''Gran Turismo 5'' *

Wrightspeed X1 The Wrightspeed X1 is a one-off Ariel Atom heavily modified to use an all-electric powertrain. The Atom was chosen for its light weight and efficient design. The electric motor and inverter are sourced from AC Propulsion, makers of the AC Propul ...

, a 2008 electric sports car prototype based on the Ariel Atom

Bus routes

* X1 (Metrobus), a bus route in Washington, District of Columbia, United States *

X1 (New York City bus) The Metropolitan Transportation Authority (MTA) operates 80 express bus routes in New York City, United States. Generally, express routes operated by MTA Bus Company are assigned multi-borough (BM, BxM, QM, SIM) prefixes. Exceptions to this rule ...

, a bus route in New York City, New York, United States * X1 Steel Link, a bus rapid transit service between Sheffield, Rotherham, and Maltby in England, United Kingdom * Excel X1, a bus route from Lowestoft to Peterborough in England, United Kingdom *

X1 Glasgow–Hamilton X1 was a bus route between Hamilton and Glasgow. It was operated by First Glasgow. History In September 2019, First announced plans to withdraw the route on 27 October. The company claimed passenger numbers had been falling for several years a ...

, a former bus route in Scotland

Cycles

Sinclair X-1 The Sinclair X-1 was a two-wheel electric vehicle invented in Britain by Sir Clive Sinclair. The X-1 was announced in November 2010 and was expected to be available from July 2011 at the price of £595. However, it failed to reach the market. Ref ...

, an electrically assisted faired recumbent bicycle *

Yamaha X-1 The Yamaha X-1 is a commuter-style motorbike that is manufactured in Thailand. The motorbike is designed to compete with the 110 cc Honda Wave and the Suzuki Smash, a city commuter-style motorbike. Motor The Yamaha X-1 is powered by a 2- ...

, a commuter-style motorbike

Rail transport

SL X1 X1 was a series of two-car electric multiple units (twin units) operated by Greater Stockholm Transport (SL) on the Stockholm commuter rail. The X1 was operated in sets of up to five units, making ten-car trains, each unit consisting of one m ...

, a former Swedish commuter train built by ASEA *

LNER Class X1 X1, X-1 or X-one may refer to: Transportation Aircraft * Bell X-1, the first aircraft to exceed the speed of sound in controlled level flight Automobiles * BMW X1, a 2009–present German subcompact luxury SUV * Geely Yuanjing X1, a 2017–2021 ...

, a single locomotive rebuilt several times in it’s history

Watercraft

X1 (dinghy) The X1 is a fast, light-weight sailing dinghy designed for sailing on rivers, estuaries and inland waters by Phil Morrison (yachts), Phil Morrison. The dinghy is sailed by 2 or 3 people and has a mainsail, main, a jib and a Spinnaker#Symmetric, ...

, a fast, light-weight sailing dinghy designed for inland racing * X-1 Submarine, the United States Navy's only midget submarine *

HM Submarine X1 HM Submarine ''X1'' was a British submarine of the interwar period. Conceived and designed as a submersible commerce raider for the Royal Navy; at the time of her launching she was the largest submarine in the world. For Britain, the idea of ...

, a Royal Navy submarine

Technology

* Sharp X1, a Japanese home computer manufactured by the Sharp Corporation * Xbox One, a video game console * a one-lane

PCI Express PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe or PCI-e, is a high-speed serial computer expansion bus standard, designed to replace the older PCI, PCI-X and AGP bus standards. It is the common ...

slot * Cray X1, a supercomputer sold since 2003 * Electrologica X1, an early Dutch computer * Sony Ericsson XPERIA X1, a mobile phone * ThinkPad X1 Carbon, a high-end notebook computer released by Lenovo in 2012 * X1 (software company) formerly known as X1 Technologies, Inc. * Tegra X1, a system on a chip released by Nvidia in 2015 * X1, an IPTV-based cable television hardware platform developed by

Comcast Comcast Corporation (formerly known as American Cable Systems and Comcast Holdings),Before the AT&T merger in 2001, the parent company was Comcast Holdings Corporation. Comcast Holdings Corporation now refers to a subsidiary of Comcast Corpora ...

Arts, entertainment, and media

* X1 (band), a South Korean boy band formed through '' Produce X 101'' *

X1 (rapper) Bruce David Sandlin (March 6, 1979 – July 4, 2007), better known by his stage name X1, was an American rapper best known in the 90s as a member of the Gang Green and affiliated with Onyx. X1 was found dead in his home in Las Vegas on July 4, ...

(1979–2007), American rapper * X Minus One, a 1950s American radio show * ''X-Men'' (film), the first film in the ''X-Men'' franchise * X-One, monthly magazine produced by Imagine Publishing

Other

* ''x''⁻¹, the multiplicative inverse of ''x'' (another way to denote ''1⁄x'', one divided by ''x'') * Cygnus X-1 and Scorpius X-1, two astronomical x-ray sources *

M82 X-1 M82 X-1 is an ultra-luminous X-ray source located in the galaxy M82. It is a candidate intermediate-mass black hole, with the exact mass estimate varying from around 100 to 1000. One of the most luminous ULXs ever known, its luminosity exceeds th ...

, a candidate intermediate-mass black hole detected in January 2006 * United States patent X1, by Samuel Hopkins (inventor) * X1 (Egyptian hieroglyph t), an extremely common alphabetic letter in the Ancient Egyptian alphabet