X-1

X-1 may refer to:

Arts, entertainment, and media

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

Transportation

Aircraft

Bell X-1, the first aircraft to exceed the speed of sound in controlled level flight

Automobiles

Lada X-1, a 1981 Soviet concept MPV
McLaren X-1, a 2012 British one-off sports car based on the 12C

Cycles

Sinclair X-1, an electrically assisted faired recumbent bicycle
Yamaha X-1, a commuter-style motorbike

Watercraft

X-1 Submarine, the United States Navy's only midget submarine

Technology

Xbox One, a video game console
a one-lane PCI Express slot

Astronomical X-ray sources

Aquila X-1
Circinus X-1
Cygnus X-1
Hercules X-1
IC 10 X-1
LMC X-1
M82 X-1, a candidate intermediate-mass black hole detected in January 2006
Monoceros X-1
NGC 300 X-1
SMC X-1
Scorpius X-1
Vela X-1

Other

x⁻¹, the multiplicative inverse of x (another way to denote 1⁄x, one divided by x)

See also

This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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