Isl (or isl) is a common abbreviation for "island" or "islands".

ISL may also refer to:

Education and research

  • Illinois Security Lab, a research laboratory at the University of Illinois at Urbana-Champaign
  • Independent School League (disambiguation), independent high school athletic conferences in the United States
  • Institute of State and Law, a Russian legal think tank affiliated with the Russian Academy of Sciences
  • International School of Louisiana, a charter school system in the United States
  • International School of Lusaka, an international school in Zambia
  • International School of Luxembourg, a privately owned non-profit school in Luxembourg
  • International School of Lyon, an international school in France

Languages

  • Icelandic language, the national language of Iceland
  • Icelandic Sign Language, the sign language of Iceland
  • Indian Sign Language also known as sign language of the deaf community in India
  • International Sign Language, any of several international auxiliary languages
  • Irish Sign Language, the sign language of Ireland
  • Israeli Sign Language, the most commonly used sign language within Israel's deaf community
  • Italian Sign Language, sign language used for Italian deaf people

Sports

  • Independent School League (Illinois), a group of nine Chicago-area preparatory schools
  • Independent School League (New England), a group of 16 New England preparatory schools
  • Independent School League (Washington, D.C. area), a group of 17 Washington, D.C. preparatory schools
  • Interscholastic League of Honolulu, a group of Hawaiian private schools
  • Indian Super League, a professional football-club league based in India
  • Ice Hockey Superleague, a British-based ice hockey league that existed between 1996 and 2003
  • Indonesia Super League, the top-tier competition for football clubs in Indonesia
  • International Soccer League, a U.S. based soccer league which was formed in 1960 and collapsed in 1965
  • International Sport and Leisure, a bankrupt Swiss sports marketing company that was closely affiliated with FIFA and the IOC
  • Iranian Super League (disambiguation), the Iranian professional basketball, futsal or volleyball leagues
  • Island Soccer League, a professional six-a-side association football league based in Bermuda
  • International Swimming League, a professional swimming league with ten teams and nine rounds in different cities all over the world

Transport

  • Island line (MTR), one of the rapid transit railway lines in Hong Kong
  • Isleworth railway station (National Rail station code <code>ISL</code>), Hounslow, London, England, UK
  • Atatürk Airport (IATA airport code <code>ISL</code>), a former major international airport serving Istanbul, Turkey now serves cargo flights
  • Iowa and St. Louis Railway (I&SL), U.S.

Political organizations

  • Independent Socialist League, a defunct Trotskyist group in the United States (originally called the "Workers Party")
  • International Socialist League (South Africa), a former syndicalist group
  • International Socialist Left (Germany) (), a Trotskyist group in Germany

Other uses

  • Iceland, a Nordic European island country
  • In situ leach, a mining technique
  • Independent state legislature theory, U.S. Constitution reading
  • Integer set library (isl), a programming library for manipulating integer sets
  • Inter-Switch Link (disambiguation), a specially configured connection between network equipment
  • Cisco Inter-Switch Link, a proprietary Cisco VLAN trunking protocol
  • International Service Learning, a humanitarian NGO that offers volunteers practical experience in medical, education, and community enrichment programs
  • Irish Shipping Limited, an Irish state-owned deepsea shipping company formed during World War II
  • i. s. L., "in the sense of Lyapunov" (in mathematical contexts), a reference to Lyapunov stability<!-- see my early-2019 edit history comment! -->
  • Postal code for Senglea, Malta ()
  • Inter-satellite link, a communication link between two satellites, either via radio-frequency, or via optical link (then also called OISL).

See also

  • International Society of the Learning Sciences (ISLS)