;The Greek letter alpha:
;Place names:
;Media and literature:
- Alpha (band) , a British electronic music group.
- Alpha (computer) , a fictional computer in Mike Walker's radio play ''Alpha''
- , the first Magic: The Gathering cards set
- Alpha 5 / Alpha 6 / Alpha 7 , nicknames of the characters in the ''Power Rangers'' television programs
- Alpha TV , a Greek terrestrial channel
- ARC Trooper A-17 , nicknamed "Alpha", a character from the ''Star Wars'' films
- The highest Social Class in Aldous Huxley's novel '' Brave New World ''.
- The primary setting for the fictional television series ''''
- The Robot on the Original Mighty Morphin Power Rangers
;Science and mathematics:
- Alpha (biology) , "alpha male" and "alpha female", the highest ranking individuals in a community of social animals
- Alpha (Investment) , a measuring of risk-adjusted performance
- Alpha (Machine Learning) , the degree to which a learning agent takes into account new information
- Alpha (Radio Navigation) , a Russian radio navigation system, siniliar to the former Omega Navigation System
- Alpha Channel , a transparency information layer to supplement the three RGB color layers to make the RGBA color space.
- Alpha Waves , recorded by electroencephalography
- Cronbach's Alpha , a statistical measure of reliability.
- DEC Alpha , a microprocessor from Digital Equipment Corporation.
- A possible name for the International Space Station .
- An early Development Stage in software engineering (e.g. an Alpha version)
;Other:
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