Isl (or isl) is a common abbreviation for "

island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...

" 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 The Institute of State and Law (ISL) of the Russian Academy of Sciences (RAS) (''Russian'': Институт государства и права Российской академии наук (ИГП РАН)) is the largest scientific legal c ...

, a Russian legal think tank affiliated with the Russian Academy of Sciences *

International School of Louisiana The International School of Louisiana (ISL) is a system of charter schools in Greater New Orleans. Three campuses are located in New Orleans. The K-8 school offers a French immersion program and a Spanish immersion program.Dreilinger, Danielle.In ...

, a charter school system in the United States * International School of Lusaka, an international school in Zambia *

International School of Luxembourg The International School of Luxembourg (ISL) is a privately owned non-profit international school located in Hollerich, Luxembourg City, in southern Luxembourg. History The school was founded in 1963 under the name DuPont de Nemours Private Sc ...

, a privately owned non-profit school in Luxembourg *

International School of Lyon International School of Lyon (ISL) is an English-Language international school in Sainte Foy-Lès-Lyon, France, near Lyon Lyon (Franco-Provençal: ''Liyon'') is a city in France. It is located at the confluence of the rivers Rhône and S ...

, an international school in France

Languages

Icelandic language Icelandic ( ; , ) is a North Germanic languages, North Germanic language from the Indo-European languages, Indo-European language family spoken by about 314,000 people, the vast majority of whom live in Iceland, where it is the national languag ...

, the national language of Iceland *

Icelandic Sign Language Icelandic Sign Language () is the sign language of the deaf community in Iceland. It is based on Danish Sign Language; until 1910, deaf Icelandic people were sent to school in Denmark, but the languages have diverged since then. It is officially ...

, the sign language of Iceland * Indian Sign Language also known as sign language of the deaf community in India *

International Sign Language International Sign (IS) is a pidgin sign language which is used in a variety of different contexts, particularly as an international auxiliary language at meetings such as the World Federation of the Deaf (WFD) congress, in some European Union se ...

, any of several international auxiliary languages *

Irish Sign Language Irish Sign Language (ISL, ) is the sign language of Ireland, used primarily in the Republic of Ireland. It is also used in Northern Ireland, alongside British Sign Language (BSL). Irish Sign Language is more closely related to French Sign Langu ...

, the sign language of Ireland *

Israeli Sign Language Israeli Sign Language (Hebrew: שפת הסימנים הישראלית), also known as Shassi or ISL, is the most commonly used sign language by the Deaf community of Israel. Some other sign languages are also used in Israel, among them Al-Sayyi ...

, the most commonly used sign language within Israel's deaf community *

Italian Sign Language Italian Sign Language (, LIS) is the visual language used by deaf people in Italy. Deep analysis of it began in the 1980s, along the lines of William Stokoe's research on American Sign Language in the 1960s. Until the beginning of the 21st cen ...

, sign language used for Italian deaf people

Sports

Independent School League (Illinois) The Independent School League (ISL) is an athletic conference comprising 9 private secondary schools in the Chicago metro area. All but one of the schools are also full members of the Illinois High School Association, the governing body for m ...

, a group of nine Chicago-area preparatory schools *

Independent School League (New England) The Independent School League (ISL) is an athletic conference of sixteen private college-preparatory schools in Greater Boston. Its parent organization is the New England Preparatory School Athletic Council (NEPSAC). Founded in 1948, the ISL s ...

, a group of 16 New England preparatory schools *

Independent School League (Washington, D.C. area) The Independent School League or ISL is a prep school athletic conference located in the Washington, D.C. metropolitan area of the United States The United States of America (USA), also known as the United States (U.S.) or America, is a ...

, a group of 17 Washington, D.C. preparatory schools *

Interscholastic League of Honolulu The Interscholastic League of Honolulu (ILH) is an athletic activity league whose membership is primarily private secondary schools in Honolulu, Hawai'i. The ILH has 24 member schools with over 13,000 student athletes participating in 37 differ ...

, a group of Hawaiian private schools *

Indian Super League The Indian Super League (ISL) is a professional association football league in India and the highest level of the Indian football league system. Administered by the All India Football Federation (AIFF) and its commercial partner Football Sport ...

, a professional football-club league based in India *

Ice Hockey Superleague The British Ice Hockey Superleague (BISL, also known as the Sekonda Ice Hockey Superleague from 1998 to 1999 for sponsorship reasons) was a professional ice hockey league in the United Kingdom between 1996 and 2003. Devised in 1995, it replaced ...

, a British-based ice hockey league that existed between 1996 and 2003 *

Indonesia Super League Liga 1 (), officially known as BRI Liga 1 for sponsorship reasons, is the men's top professional association football, football division of the Indonesian football league system. Administered by Liga Indonesia Baru, PT Liga Indonesia Baru (), Li ...

, the top-tier competition for football clubs in Indonesia *

International Soccer League The International Soccer League was a U.S.-based soccer league which was formed in 1960 and collapsed in 1965. The League, affiliated with the American Soccer League, featured guest teams primarily from Europe and some from South America, Canada ...

, a U.S. based soccer league which was formed in 1960 and collapsed in 1965 *

International Sport and Leisure International Sport and Leisure (ISL) was a Swiss sports marketing company that was closely bound to FIFA. History ISL was established by former Adidas boss Horst Dassler, and was associated with FIFA, the International Olympic Committee and th ...

, a bankrupt Swiss sports marketing company that was closely affiliated with FIFA and the IOC *

Iranian Super League (disambiguation) Iranian Super League may refer to: * Futsal Super League * Iranian Basketball Super League * Iranian Volleyball Super League The Iranian Volleyball Super League (IVSL) is a professional volleyball league in Iran at the top of the Iranian volleyba ...

, the Iranian professional basketball, futsal or volleyball leagues *

Island Soccer League The Island Soccer League is a professional six-a-side association football (also known as 'soccer') league based in Bermuda. The league is the brainchild of Bermuda soccer legend David Bascome, who founded the program in 2006. The league star ...

, a professional six-a-side association football league based in Bermuda *

International Swimming League The International Swimming League (ISL) was an annual professional swimming league, established in 2019. It features a team-based competition format with fast-paced race sessions. In 2019, the regular season started in October and the Final Match ...

, a professional swimming league with ten teams and nine rounds in different cities all over the world

Transport

Island line (MTR) The Island line () is one of ten lines of the MTR, the mass transit system in Hong Kong. It runs from Kennedy Town in the Western district to Chai Wan in the Eastern District on Hong Kong Island, passing through the territory's majo ...

, one of the rapid transit railway lines in Hong Kong *

Isleworth railway station Isleworth railway station is located in the London Borough of Hounslow, in west London, and is in Travelcard Zone 4. It is 19 km (12 mi) west-southwest of London Waterloo. The unstaffed station and all trains serving it are operated by ...

(National Rail station code ISL), Hounslow, London, England, UK *

Atatürk Airport Atatürk Airport is an airport currently in use for private jets. It used to be the primary international airport of Istanbul and the hub of Turkish Airlines until it was closed to commercial aviation, commercial passenger flights on 6 April ...

(IATA airport code ISL), a former major international airport serving Istanbul, Turkey now serves cargo flights *

Iowa and St. Louis Railway The Iowa and St. Louis Railway (I&SL) was a subsidiary United States railroad operating in south-east Iowa and north-east Missouri from 1902 to 1947.Walker, M: SPV's Comprehensive Railroad Atlas of North America, Prairies East & Ozarks 2004 p. 39 Fo ...

(I&SL), U.S.

Political organizations

Independent Socialist League The Workers Party (WP) was a Third Camp Trotskyist group in the United States. It was founded in April 1940 by members of the Socialist Workers Party who opposed the Soviet invasion of Finland and Leon Trotsky's belief that the USSR under Jos ...

, a defunct Trotskyist group in the United States (originally called the "Workers Party") *

International Socialist League (South Africa) The International Socialist League of South Africa was the earliest major Marxist party in South Africa, and a predecessor of the South African Communist Party. The ISL was founded around the syndicalist politics of the Industrial Workers of t ...

, a former syndicalist group *

International Socialist Left (Germany) The International Socialist Left (, ''isl'') was a Trotskyist group in Germany. The ''isl'' was an organizational descendant of the International Marxist Group (GIM). It was one of two factions that form the German section of the Fourth Internati ...

(), a Trotskyist group in Germany

Other uses

Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...

, a Nordic European island country *

In situ leach In-situ leaching (ISL), also called in-situ recovery (ISR) or solution mining, is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit, '' in situ''. In-situ leach works by artificially di ...

, a mining technique *

Independent state legislature theory The independent state legislature theory or independent state legislature doctrine (ISL) is a judicially rejected legal theory that posits that the Constitution of the United States delegates authority to regulate Federal elections in the United ...

, 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 Cisco Inter-Switch Link (ISL) is a Cisco proprietary link layer protocol that maintains VLAN information in Ethernet frames as traffic flows between switches and routers, or switches and switches. ISL is Cisco's VLAN encapsulation protocol and is ...

, a proprietary Cisco VLAN trunking protocol * Intercon Security, a security firm *

International Service Learning International Service Learning, founded in 1996, is a non-governmental organization that offers medical volunteers two to three week placements in twelve countries: Belize, Colombia, Costa Rica, Cuba, Dominican Republic, Haiti, Jamaica, Mexico, N ...

, a humanitarian NGO that offers volunteers practical experience in medical, education, and community enrichment programs *

Irish Shipping Limited Irish Shipping Limited was an Republic of Ireland, Irish state-owned deep sea shipping company, formed during World War II for the purpose of supplying the country's import needs. Its ships were usually named after trees. Its contribution to Ir ...

, 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 Various types of stability may be discussed for the solutions of differential equations or difference equations describing dynamical systems. The most important type is that concerning the stability of solutions near to a point of equilibrium. ...

* Postal code for

Senglea Senglea ( ), also known by its title Città Invicta (or Civitas Invicta), is a fortified city in the Port Region of Malta. It is one of the Three Cities in the Grand Harbour area, the other two being Cospicua and Vittoriosa, and has a popu ...