ISF may stand for:

Science and technology

* Imaging Science Foundation * Impulse sensitivity function * Incremental sheet forming *

Information Security Forum The Information Security Forum (ISF) is an independent information security body. Activities and publications The ISF delivers a range of content, activities, and tools. It is a paid membership organisation: all its products and services are ...

, an international information security best practices organization * Ingenieurs Sans Frontieres (Engineers Without Borders) * Ink Serialized Format, a vector image file format from Microsoft *

Interstitial fluid In cell biology, extracellular fluid (ECF) denotes all body fluid outside the Cell (biology), cells of any multicellular organism. Body water, Total body water in healthy adults is about 50–60% (range 45 to 75%) of total body weight; women ...

Israel Science Foundation The Israel Science Foundation (ISF) is a nonprofit organization that provides monetary grants for scientific research in Israel. It is the Israeli analogue of scientific funding bodies in other countries such as the US National Science Foundation, ...

Education

* Idries Shah Foundation, educational charity * Independent Schools Foundation Academy, private international school in Hong Kong * Insaf Student Federation, it is the largest Center-Left Student organization in the Nation and the official student wing of the

Pakistan Tehreek-e-Insaf The Pakistan Tehreek-e-Insaf (PTI) is a political party in Pakistan established in 1996 by cricketer and politician Imran Khan, who served as the country's prime minister from 2018 to 2022. The party is led by Gohar Ali Khan since late 2023. ...

political party * International School of Florence *

International School Sport Federation The International School Sport Federation (ISF) is an international sports governing body for school sport. Founded in 1972 with 21 European signatory nations, the federation has been organising international competitions to encourage education t ...

, sports governing body for high school sport *

Internationale Schule Frankfurt Rhein-Main The ISF International School Frankfurt Rhein-Main is a private school in Sindlingen (Frankfurt am Main), Sindlingen, a borough of Frankfurt am Main, Germany. Accredited by the Council of International Schools, the school offers IGCSE, IB Diploma ...

Sport

* International Snowboard Federation *

International Softball Federation Map of member states., 400px, right The International Softball Federation (ISF) is the former international governing body for the sport of softball with its world headquarters and training centre at Plant City, Florida. The ISF is a non-profit ...

International Skyrunning Federation The International Skyrunning Federation (ISF) is the world governing body for skyrunning. The ISF today counts 41 Member nations. The Federation of Sports at Altitude (FSA) used to be the organization which governed and managed the sports of skyr ...

, world sports governing body for skyrunning *

International Socca Federation The International Socca Federation (ISF) is a governing body for socca. This organization sets up the Socca World Cup, a world championship in socca, and more 5, 6, 7 or 8-sided tournaments for professional teams. History Formation The I ...

, governing body of small-sided-football *

International Sumo Federation The International Sumo Federation (IFS) is the largest international governing body of sport Sumo with over 87 member countries. It was formed on 10 December, 1992 and is the only Sumo organization recognised by the International Olympic Committee ...

, governing body for amateur sumo

Other

* Idaho Shakespeare Festival, theater company * Importer Security Filing * Impôt de Solidarité sur la Fortune, a French wealth tax *

Indian Secular Front The Indian Secular Front (abbreviation: ISF) officially known as All India Secular Front is an Indian political party formed in West Bengal by Abbas Siddiqui, an influential cleric of the shrine of Furfura Sharif in Hooghly district. History ...

, an Indian political party * Information Support Force, a service branch of the People's Liberation Army *

Internal Security Forces The Internal Security Forces (; ; abbreviated ISF) are the national police and gendarmerie of Lebanon. Modern police were established in Lebanon in 1861, with the creation of a gendarmerie force. In April 2005, Ashraf Rifi became head of the I ...

, of Lebanon * International Seafarers' Federation, former international trade secretariat *

Iraqi security forces The Iraqi Security Forces (ISF) is a term used by the United States Department of Defense (DoD) to describe law enforcement and military forces of the federal government of the Republic of Iraq. During the Iraq War, these entities received trainin ...

* Italian Strategic Fund *

Lexus IS F The Lexus IS (XE20) is a car produced by the Japanese carmaker Toyota under its luxury division, Lexus. Classified as a compact executive car, it represented the second generation of the Lexus IS. Serving as Lexus's entry-level sedan from 2005 ...

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