IS may refer to:
Arts and media Literature Book of Isaiah, a biblical text Is (novel), by Joan Aiken i"s, a manga by Masakazu Katsura IS – Otoko Demo Onna Demo Nai Sei, a manga by Chiyo Rokuhana Infinite Stratos, a Japanese light novel series
Other media Is (Chick Corea album) Is (My Morning Jacket album) iS – internal section, a video game developed by Square is, an album by Hey Ocean!
Businesses and organisations Independent Sector, an American philanthropic coalition Intermediate school, education between primary and secondary schools areas, also known as middle school Ilta-Sanomat, a newspaper in Finland Intelligent Systems, a first-party video game developer and internal team of Nintendo International Socialists (disambiguation), several Trotskyist political organizations Investment—Saving, a curve in the IS/LM model of economics IRS Airlines (IATA code) Island Airlines (IATA code)
Language Is, the third-person singular present tense of the English language verb "to be", frequently used as a copula Icelandic language (ISO 639-1 alpha-2 code) International Sign, a pidgin sign language Is (rune) (ᛁ), a rune of the Anglo-Saxon fuþorc
Places Hīt, or Is, an Al Anbar town on the Euphrates River Iași County, Romania, (vehicle registration code) Iceland (ISO 3166-1 alpha-2 country code) Inverness TMD, a railway traction maintenance depot (depot code) Province of Isernia, Italy (vehicle registration code) Islamabad Capital Territory, capital region of Pakistan Island (Is.), any piece of land surrounded by water Israel (NATO country code) Ys or Is, a mythical city of Brittany
Science and mathematics Immune system, organic mechanisms that protect against disease Immunosuppression Importance sampling, a statistical technique for estimating properties of a particular distribution Infrasound, sound frequencies below the human range of hearing Insertion sequence, a short DNA transposable element Intersex, an organism with sex characteristics neither exclusively male nor female
Technology Computing .is, the Internet country-code top-level domain for Iceland Information science, the study of data collection, manipulation, and dissemination Information systems, organizations of data-processing persons, records, and activities InstallShield, a software tool for creating software installers for Microsoft Windows IntelliStar, a computer system used to display local forecasts on The Weather Channel The relational operator is, used in Python The type comparison operator is, used in C#
Vehicles and weaponry IS tank, a Soviet heavy tank in World War II Istrebitel Sputnikov or "Destroyer of Satellites", a Soviet anti-satellite weapons program Lexus IS, a sports car made by Lexus Locomotive IS, a Soviet passenger steam locomotive Nikitin-Shevchenko IS, a Soviet fighter aircraft
Other uses in technology Image stabilization, a family of techniques to reduce blur caused by lens shakes Canon Image Stabilizer, a lens-based image stabilization technology by Canon Intrinsic safety, a protection technique for electronic equipment in explosive atmospheres Indian Standard, developed by the Bureau of Indian Standards, for example IS 456 International Standard, a mounting standard for the calipers and rotors of disc-type bicycle brake systems
Other uses Internal security, the work of keeping domestic peace by a national force International studies, or International relations, the study of politics, economics and law on a global level Intervention specialist, the title of a special education teacher in some states of the U.S. Is, in is-ought philosophy, a fact or empirical state with finite limits in space and time Old Israeli Shekel, commonly denominated as IS Islamic State, transnational Salafi jihadist group and unrecognized quasi-state
See also I (disambiguation) Independence Square (disambiguation), several public squares around the world International System of Units (SI), the modern form of the metric system Interstate (disambiguation) Islamic state, a form of government based on Islamic law