X1

X1 or X-1 may refer to:

Vehicles

• Bell X-1, the first aircraft to exceed the speed of sound in controlled level flight
• BMW X1, a BMW Compact Sports Activity Vehicle
• HM Submarine X1, a Royal Navy submarine
• Lada X-1, a concept car created by AvtoVAZ
• McLaren X-1, a 2012 bespoke supercar created for an anonymous client and based on the McLaren MP4-12C
• Red Bull X1, the former name of the Red Bull X2010, a fictional car created for the game Gran Turismo 5
• SL X1, a former Swedish commuter train
• Sinclair X-1, an electrically assisted faired recumbent bicycle
• Wrightspeed X1, an electric sports car based on the Ariel Atom chassis
• X-1 Submarine, the United States Navy's only midget submarine
• X1 (dinghy), a fast, light-weight sailing dinghy designed for inland racing
• XS-1 (spacecraft), a space plane in development
• Yamaha X-1 and X-1R, related Yamaha underbone motorcycles

Computing

• X1 (computer), a Japanese home computer manufactured by the Sharp Corporation
• Xbox One, a video game console
• a one-lane PCI Express slot
• Cray X1, a supercomputer sold since 2003
• Electrologica X1, an early Dutch computer
• 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

Entertainment

• X1 (band), a South Korean boy band formed through Produce X 101
• X Minus One, a 1950s American radio show
• X-Men (film), the first film in the X-Men franchise
• X1 (rapper) (1979 - 2007), American rapper

Other

• X1 (New York City bus)
• X1, a Metrobus route
• 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, a candidate intermediate-mass black hole detected in January 2006
• Sony Ericsson XPERIA X1, a mobile phone
• Excel X1, a bus route from Lowestoft to Peterborough in Eastern England
• X1 Steel Link, a bus rapid transit service between Sheffield, Rotherham and Maltby in northern England
• United States patent X1, by Samuel Hopkins (inventor)
• X1 (Egyptian hieroglyph t), an extremely common alphabetic letter in the Ancient Egyptian alphabet

See also

• 1X (disambiguation)