Alt

Alt or ALT may refer to:

• Alt account, an alternative online identity also known as a sock puppet account
• Alternate character, in online gaming
• Alternate route, type of highway designation
• Alternating group, mathematical group of even permutations
• Alternative lifestyle
• Alternative rock
• Alternator
• Alternative subculture or youth subculture, particularly with regard to fashion or aesthetics ("alt fashion," "alt aesthetics")
• Altimeter
• Altitude

• Aboriginal Land Trust, a type of organisation in Australia
• Alanine transaminase, a liver enzyme of the transaminase family
• Altona railway station, Melbourne
• Alternative lengthening of telomeres, in cellular biology
• Approach and Landing Tests, in space transportation
• Argon laser trabeculoplasty, a type of glaucoma surgery
• Assistant Language Teacher, in Japan
• Association for Learning Technology, in Oxford, England
• Association for Linguistic Typology
• Accelerated life testing, testing a product in excess of its normal service parameters
• International Conference on Algorithmic Learning Theory, a conference in theoretical computer science

• Alt, Greater Manchester, formerly a constituent parish of Limehurst Rural District, near Oldham, England
• River Alt, in Merseyside, England
• Olt (river) (), river in Romania
• Altoona Transportation Center, Pennsylvania, U.S. (Amtrak code ALT)
• Altrincham station, in Altrincham, England (National Rail station code ALT)

• Alt (surname)
• A.L.T. (born 1970), Mexican-American rapper
• André Leon Talley, fashion magazine editor

• ALT (band), Andy White, Liam Ó Maonlaí, Tim Finn
• ALT (album), a 2012 music album by Van der Graaf Generator
• ALT (EP), a 2015 EP by Vanna
• Alt-J, band
• 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

• Southern Altai language (ISO-639-3 code "alt")
• Alt attribute, in HTML computer language
• Alt key, on a computer keyboard
• ALT Linux, computer software
• alt.* hierarchy, in USENET newsgroups

• Altbier, German beer
• Alt (film), a 2013 Venezuelan short film
• Alt-right, an abbreviation of alternative right, a loosely connected far-right, white nationalist movement based largely in the United States