LS

LS may refer to:

Businesses

 * LS Group, a Korean company
 * Jet2.com (IATA code: LS), a British airline

Latin

 * Lewis and Short (abbr. "L&S"), authors of the 1879 work A Latin Dictionary
 * Lectori Salutem (L.S.), Latin for 'Greetings Reader' and used as opening words to a letter
 * locus sigilli, Latin for 'place of the seal', used in notarized and legal documents; see:  Seal (contract law)

Organizations

 * Liberal Party of Croatia (Liberalna stranka or LS), a Croatian political party active from 1998–2006
 * Liberal Democratic Party (Serbia, 1989), formerly known as the Liberal Party and abbreviated as LS
 * Liberals of Serbia, a defunct political party in Serbia
 * Lincoln-Sudbury Regional High School, Massachusetts, US
 * Lok Sabha, the lower house of the Parliament of India
 * Loyola Schools, the college unit of the Ateneo de Manila University in Quezon City, Philippines

Places

 * Lesotho (ISO 3166-1 country code: LS), a country in southern Africa
 * LS postcode area, UK, covering Leeds
 * County Laois, Ireland

Astronomy

 * Light-second (ls), a unit of length in astronomy equivalent to the distance light travels in one second
 * Local Supercluster (LS) or Virgo Superclaster, our galaxy supercluster

Biology and medicine

 * Lung surfactant, a lipoprotein complex
 * Legius syndrome, also known as Neurofibromatosis 1-like syndrome, a genetic disorder
 * Lichen sclerosus, a skin disease
 * Linnean Society of London, postnominal LS
 * Live sand, in aquaria, sand populated with bacteria and organisms to aid in dissolving organic wastes

Computing and electronics

 * ls, a command specified by POSIX and by the Single UNIX Specification; used for listing files
 * .ls, the internet top-level domain for Lesotho
 * Link-state routing protocol, used in packet-switching networks
 * Location Services, a component of Microsoft's System Center Configuration Manager software
 * LS, a low-power Schottky version of a 7400 series chip

Engineering

 * Land Surveyor

Mathematics

 * Least squares, a regression analysis
 * Löwenheim–Skolem theorem, a theorem in first-order logic dealing with the cardinality of models

Physics

 * LS coupling, interaction between quantum numbers

Transportation

 * LS, a generic trim of Chevrolet vehicles
 * LS, a model prefix on sailplanes made by Rolladen-Schneider Flugzeugbau GmbH
 * LS 90, a Czech and Slovak train protection system
 * Lexus LS, the flagship, full-size sedan made by Lexus
 * Lincoln LS, a model of car made from 2000 to 2006
 * GM LS engine, a V-8 engine in General Motors cars

Other uses

 * La Salle (disambiguation), several places and educational institutions
 * Latvian lats (Ls or ℒ𝓈), former currency of Latvia
 * LaVeyan Satanism, a religious group
 * Leading Seaman, a junior non-commissioned rank in several navies
 * Logistics Specialist, a rating in the United States Navy
 * Long snapper, a special teams player in American football
 * Lost Souls (online game), a MUD, or text-based online role-playing game
 * Sudanese pound, currency of Sudan, abbreviated to LS or £Sd
 * Syrian pound, currency of Syria, abbreviated to LS or £S