Alpha (disambiguation)

Alpha may refer to:

The Greek letter alpha

Alpha (letter), a letter in the Greek alphabet. α may be used as the symbol for:

Angle of attack in aerodynamics
Common-base current gain of a transistor in electronics
In physics:
- Fine-structure constant, a fundamental physical constant
- Alpha particle, form of particle radiation
- H-alpha, or H-α, an emission line created by hydrogen atoms
The alpha carbon in organic chemistry
In Bayer designation, the typically brightest star in a constellation
The significance level in statistical hypothesis testing
Alpha channel, describing transparency and opacity in computer graphics
The alpha coefficient in evaluating financial returns
Thermal diffusivity

Alpha (band), a British electronic music group.
Alpha (Sevendust Album), an album by the band Sevendust.
Alpha (album), an album by the band Asia
Alpha Magazine, Australian men's sport magazine
Alpha (computer), a fictional computer in Mike Walker's radio play Alpha
Alpha (Magic: The Gathering), the first Magic: The Gathering cards set
Alpha 5/Alpha 6/Alpha 7, nicknames of the characters in the Power Rangers television programs
Alpha 60, a sentient computer in the film Alphaville
Alpha TV, a Greek terrestrial channel
ARC Trooper A-17, nicknamed "Alpha", a character from various Star Wars comics
The highest social class in Aldous Huxley's novel Brave New World
Moonbase Alpha, the primary setting for the television series Space: 1999
Alpha the Ultimate Mutant, a character featured in Marvel Comics
Alpha (planet) in Isaac Asimov's novel Foundation and Earth
Alpha (known as Proto in Japan) is the glitched prototype of the Internet and final boss of the video game MegaMan Battle Network 3

Alpha Centauri, the brightest star system in the southern constellation of Centaurus
Alpha (biology), "alpha male" and "alpha female", the highest ranking individuals in a community of social animals
Alpha (investment), a measurement of risk-adjusted performance
Alpha (machine learning), the degree to which a learning agent takes into account new information
Alpha waves, recorded by electroencephalography
Cronbach's alpha, a statistical measure of reliability
ALPHA refers to the set of ASCII characters A-Z and a-z, as defined in RFC 4234
The ALPHA programming language
Alpha, a development stage of software

Space Station Alpha, the original name and unofficial call sign for the International Space Station
The first letter in the NATO phonetic alphabet
Service "A", one of the uniforms of the United States Marine Corps
Alpha (radio navigation), a Russian radio navigation system similar to the former Omega Navigation System
DEC Alpha, a microprocessor/central processing unit (CPU)
Alpha 2000, a light aircraft built in New Zealand
Alpha Group, a dedicated counter-terrorism unit that belonged to OSNAZ
Alpha class submarine, a Russian fast attack nuclear submarine
Alpha course, an introductory course in Christianity
Sony α or Sony Alpha, a digital SLR series by Sony
- Minolta α or Minolta Alpha, the Japanese name for a series of SLR cameras known as Maxxum or Dynax elsewhere, and predecessor to Sony's brand of the same name
Tropical Storm Alpha (2005)
Alpha Industries, clothing company
Alpha Mukama, Tanzanian Nutritionist, programme Coordinator,SPW Mbeya.
Alpha, a milestone in software development.