SL may refer to:

Arts and entertainment

  • SL (rapper), a rapper from London
  • Second Life, a multi-user 3D virtual world
  • Sensei's Library, an Internet site dedicated to the game of Go
  • Subdominant leittonwechselklänge
  • Leicaflex SL, a mechanical reflex camera
  • Leica SL, a mirrorless system camera

Business and organizations

  • Sociedad Limitada, the Spanish version of a private limited company → '

Politics

  • Serbian Left (Srpska levica), a political party in Serbia
  • Stronnictwo Ludowe, a defunct Polish political party
  • Soyons Libres, a French political party

Transportation and vehicles

  • SL Corporation, a Korean auto parts company
  • Rio Sul Serviços Aéreos Regionais (IATA code SL), a Brazilian airline
  • Salt Lake City Southern Railroad (reporting mark SL)
  • Stor-Oslo Lokaltrafikk, a public transport operator in Akershus, Norway
  • Storstockholms Lokaltrafik, the public transport operator in Stockholm, Sweden
  • Thai Lion Air (IATA airline code SL)
  • Mercedes-Benz SL-Class, an automobile

Trade unions

  • Association of Social Educators, a trade union in Denmark

Geography

  • Sierra Leone, in West Africa, ISO 3166 code
  • Saarland, a state of Germany
  • SL postcode area of the United Kingdom
  • Sungai Long, in Selangor, Malaysia
  • Sri Lanka, an island country in South Asia

Language

  • Sl (digraph), a Latin-script digraph
  • Sign language, used by deaf persons
  • Slovene language (ISO 639-1 code "sl")
  • Sl, a letter in the Proto-Canaanite abjad

Science, technology, and mathematics

Biology

  • Sensu lato, a term used in taxonomy to mean "in the wider sense" of a definition
  • Standard length, a common measurement for fish
  • Abbreviation for × Sophrolaelia, an orchid genus

Computing

  • sl, a humorous command in some Unix-based systems that draws an animation of a steam locomotive, intended to be invoked as a typo of ls
  • .sl, the country code top-level domain for Sierra Leone
  • SL (complexity), a class of computational complexity
  • Scientific Linux, a Linux distribution
  • Service Loading, a variant of WAP push method

Mathematics

  • SL (complexity), a class of computational complexity
  • sl (elliptic function), sine lemniscate function
  • Special linear group in mathematics, denoted SL<sub>n</sub> or SL(n)
  • Special linear Lie algebra, denoted <math>\mathfrak{sl}_n(F)</math> or <math>\mathfrak{sl}(n, F)</math>

Other uses

  • Serjeant-at-law, a former type of barrister in England and Ireland
  • Sine loco in bibliographies means that place of publication is unknown
  • Standard Liège, a Belgian professional football club
  • Southern League (New Zealand), association football league in New Zealand
  • Sublingual administration of medicine
  • Surround Left (SL) speaker on a 5.1 surround sound setup

See also

  • LS (disambiguation)
  • SLS (disambiguation)