ISF may stand for:

Science and technology

Interstitial fluid In cell biology, extracellular fluid (ECF) denotes all body fluid outside the cells of any multicellular organism. Total body water in healthy adults is about 60% (range 45 to 75%) of total body weight; women and the obese typically have a l ...

* Imaging Science Foundation * Incremental sheet forming *

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

, an international information security best practices organization *

Ingenieurs Sans Frontieres The term Engineers Without Borders (EWB; french: Ingénieurs sans frontières, ISF) is used by a number of non-governmental organizations in various countries to describe their activity based on engineering and oriented to international development ...

(Engineers Without Borders) * Ink Serialized Format, a vector image file format from Microsoft * Israel 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; ur, , ) is a political party in Pakistan. It was founded in 1996 by Pakistani cricketer-turned-politician Imran Khan, who served as the country's prime minister from 2018 to 2022. The PTI is one of the thre ...

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

Sport

International Snowboard Federation The International Snowboarding Federation was a body organised to run snowboarding competition. Following the collapse of the National Association of Professional Snowboarders in 1990, five nations and 120 racers established the International Sno ...

International Softball Federation Map of member states., 400px, right The International Softball Federation (ISF) is the 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 corpora ...

* International Skyrunning Federation, world sports governing body for skyrunning * International Socca Federation, governing body of small-sided-football * International Sumo Federation, governing body for amateur sumo

Other

* Importer Security Filing * Impôt de Solidarité sur la Fortune, a French wealth tax * International Seafarers' Federation, former international trade secretariat * Idaho Shakespeare Festival, theater company * Île Sans Fil, a community wireless network based in Montreal, Canada *

Internal Security Forces The Internal Security Forces Directorate ( ar, المديرية العامة لقوى الأمن الداخلي, al-Mudiriyya al-'aamma li-Qiwa al-Amn al-Dakhili; french: Forces de Sécurité Intérieure; abbreviated ISF) is the national police ...

, of Lebanon *

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 ...

Lexus IS F The Lexus IS (XE20) is the second generation of the Lexus IS line of compact executive cars. Sold by Lexus since 2005, the line includes multiple V6 gasoline-powered models, in four-door sedan and two-door coupé convertible body styles. Add ...

* Italian Strategic Fund {{disambiguation