Alt

Alt or ALT may refer to:

Culture and sociology

• Alt account, an alternative online identity; when used deceptively, it is known as a sock puppet account
• Alternate character, in role-playing games
• Alternative lifestyle, behavior outside the cultural norm
• Alternative or youth subculture, including "alt fashion" and "alt aesthetics"
• alt.* hierarchy, the main set of USENET newsgroups that were not distributed by default
• Alt-right, an abbreviation of alternative right, a loosely connected far-right, white nationalist movement based largely in the United States

Arts and media

• André Leon Talley (1948–2022), fashion journalist, stylist, and creative director
• Alt (film), a 2013 Venezuelan 6-minute science-fiction movie

Music

• Alternative rock, a music genre
• A.L.T. (born 1970), American Chicano rapper
• ALT (band) (c. 1995), consisting of Andy White, Liam Ó Maonlaí, and Tim Finn
• ALT (album), 2012, by Van der Graaf Generator
• ALT (EP), 2015, by Vanna
• Alt-J (formed 2007), English indie rock band
• Alt, alt dom, or altered dominant — see Glossary of music terminology § A
• In alt, singing in the octave above the treble staff (G₅ to F₆)
• ALT, a robotic singer with songs in the Bemani game series including Pop'n Music, Reflec Beat and Jubeat — see Dance Dance Revolution X3 vs. 2ndMix and Music of Dance Dance Revolution (2013–present)

Linguistics and education

• Southern Altai language (ISO-639-3 code "alt")
• Association for Linguistic Typology (founded 1995), a professional society for linguists
• Assistant Language Teacher, a job role in Japan
• Association for Learning Technology (founded 1993), a United Kingdom professional body and learned society

Medicine

• Alanine aminotransferase, a enzyme of the transaminase family, primarily found in the liver
• Alternative Lengthening of Telomeres, a mechanism in cellular biology
• Argon laser trabeculoplasty, a type of glaucoma surgery

Places and transportation

• Alt, Greater Manchester, formerly a civil parish of Limehurst Rural District, between Oldham and Ashton-under-Lyne, in Greater Manchester, England
• River Alt, in Merseyside, England
• Olt (river) (German: Alt), a river in Romania
• Altoona Transportation Center, Pennsylvania, U.S. (Amtrak code ALT)
• Altrincham station, in Greater Manchester, England (National Rail station code ALT)
• Altona railway station, in Melbourne, Victoria, Australia
• Altitude, vertical distance from a reference point
• Alternate route, a type of highway designation
• Approach and Landing Tests of the prototype Space Shuttle Enterprise in 1977
• Altimeter, short for altitude meter

Engineering, technology, and mathematics

• Accelerated life testing, subjecting a product to extreme conditions to evaluate its weaknesses
• Alternator, a device that converts mechanical energy into alternating current
• Alt key, a modifier button on a computer keyboard
• ALT Linux, a set of Russian computer operating systems
• Alt attribute, the HTML feature for specifying alternative text in a webpage
• International Conference on Algorithmic Learning Theory, a theoretical computer science meeting
• Alternating group, a mathematical object related to even permutations

Other uses

• Alt (surname)
• Aboriginal Land Trust, a type of organisation in Australia
• Altbier, a German style of beer