ALS, or amyotrophic lateral sclerosis, is a rare neurodegenerative disease.

ALS, als, Als, or ALs may also refer to:

Places Als (island), Denmark

Aviation Airman Leadership School, a U.S. Air Force program ALS – Aircraft Leasing Services, a Kenyan airline Approach lighting system, an airport runway lighting system San Luis Valley Regional Airport (IATA code: ALS)

Medicine Advanced life support, a level of medical training Anterolateral system, a part of the nervous system Antibodies from lymphocyte secretions, an immunological assay Angular leaf spot, a bacterial plant disease

Science and technology Acetolactate synthase, an enzyme Advanced Light Source, a synchrotron radiation facility ALSN, or automatic train signalling (автоматична локомотивна сигналізація), a train protection system Alternate line service, a mobile phone feature Aluminized steel, as used in engineering drawings Ammonium lauryl sulfate, a household chemical Antilag system, a system used on turbocharged engines Audio Lossless Coding, an audio codec Advanced low-power Schottky, a type of transistor–transistor logic Photodetector, ambient light sensor Alternating least squares, a matrix factorization method

Organizations Als, a nickname used for the Montreal Alouettes of the Canadian Football League ALS Association, an American nonprofit organization American Littoral Society, an American environmental organization Antar Lintas Sumatera, an Indonesian intercity bus company Arrowhead Library System (Wisconsin), American public libraries Australian Linguistic Society, an Australian academic association Associated London Scripts, a comedy-writers collective founded by Spike Milligan

Other uses ALS Gold Medal, a literary prize awarded by the Association for the Study of Australian Literature A. Lange & Söhne, a German luxury watch brand Alternative Learning System (Philippines), a modular non-formal education program Associate of the Linnean Society of London, a learned society for the study and dissemination of taxonomy and natural history "Auld Lang Syne", a traditional Scottish folk song Autographed Letter Signed, a term used in autograph colleting Singapore Area Licensing Scheme, a road pricing scheme in Singapore Tosk Albanian language (ISO 639-3 code: als)

See also