OSI may refer to:

Places

Osijek Airport Osijek Airport (; ), commonly referred to as Klisa is the international airport of Osijek, Croatia. It is located 20 km east southeast of Osijek and near the D2 road (Croatia), D2 state road, southwest of the village of Klisa, Osijek-Baranj ...

(IATA code: OSI), an airport in Croatia *

Ősi Ősi is a village in Veszprém county, Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the ea ...

, a village in Veszprém county, Hungary * Oši, an archaeological site in

Semigallia Semigallia is one of the Historical Latvian Lands located to the south of the Daugava and to the north of the Saule region of Samogitia. The territory is split between Latvia and Lithuania, previously inhabited by the Semigallian Baltic tri ...

, Latvia * Osi, a village in

Ido-Osi Ido-Osi is a town located in Ekiti State, Nigeria. The local government is full of rural towns and villages and is one of the local government districts of Ekiti State. It is very close to other local districts, including Moba, Ijero, Ilejemeje a ...

, Ekiti State, Nigeria * Osi, Ekiti LGA.Kwara State, Nigeria

Organizations

Oblates of St. Joseph The Oblates of Saint Joseph (; abbreviated OSJ) is a Catholic religious institute founded on 14 March 1878 by St. Joseph Marello and dedicated to Saint Joseph. The institute has provinces or delegations in Italy, the Philippines, the United Stat ...

, a Roman Catholic Religious order that uses the postnominal initials O.S.I. *

Open Source Initiative The Open Source Initiative (OSI) is a California public benefit corporation "actively involved in Open Source community-building, education, and public advocacy to promote awareness and the importance of non-proprietary software". Governance The ...

, an organization dedicated to promoting open source software *

Open Society Institute Open Society Foundations (OSF), formerly the Open Society Institute, is an American grantmaking network founded by business magnate George Soros. Open Society Foundations financially supports civil society groups around the world, with the s ...

, a private charitable foundation established by George Soros to promote open societies around the world * Open Society Institute-Baltimore, a locally based foundation that is part of Open Society Foundations *

Open Space Institute The Open Space Institute (OSI) is a conservation organization that protects land for clean drinking water, public recreation, healthy communities, wildlife habitat, and climate protection. Established in 1974, OSI achieves its goals through land acq ...

, an organization that seeks to preserve scenic, natural and historic landscapes *

Ordnance Survey International The Ordnance Survey International or Ordnance Survey Overseas Directorate its predecessors built an archive of air photography, map and survey records for the United Kingdom from 1946 to 1999. The Ordnance Survey International Collection (formerly ...

, a former subsidiary of the UK Ordnance Survey mapping agency *

Ordnance Survey Ireland Ordnance Survey Ireland (OSI; ) was the national mapping agency of the Republic of Ireland. It was established on 4 March 2002 as a body corporate. It was the successor to the former Ordnance Survey of Ireland. It and the Ordnance Survey of ...

(''Suirbhéireacht Ordanáis Éireann'') *

Otto-Suhr-Institut The Otto Suhr Institute for Political Science (''Otto-Suhr-Institut für Politikwissenschaft'', short ''OSI'') is a prestigious research institute of the Free University of Berlin. It is the leading academic institution for political science in G ...

, the political-science institute of the Free University of Berlin

Companies

OSI Group OSI Group is an American privately owned holding company of meat processors that service the retail and food service industries with international headquarters in Aurora, Illinois. It operates over 65 facilities in 17 countries. Sheldon Lavin w ...

, an American holding company of meat processors that service the retail and food service industries *

OSI Pharmaceuticals OSI Pharmaceuticals, Inc. was an American pharmaceutical company formerly based in Long Island, New York with facilities in Colorado, New Jersey and the United Kingdom. On Sunday, May 16, 2010 OSI agreed to be acquired by Japan-based, TSE-liste ...

, an American pharmaceutical company *

OSI Restaurant Partners Bloomin' Brands, Inc. is a restaurant holding company that owns several American casual dining restaurant chains. The company was established in 1988 in Tampa, Florida, where it is headquartered. History The company was founded in August 1988 as ...

, the restaurant and entertainment group that includes Outback Steakhouse * OSI Systems, a company that manufactures security scanners and medical equipment based in California *

OSIsoft OSIsoft, LLC is a manufacturer of application software for real-time data management, called the PI System. Founded in 1980, OSIsoft was privately held and headquartered in San Leandro, California. In August 2020, it was announced that the UK-base ...

, a privately held company that develops device connectivity software * Objective Systems Integrators, a company that provides monitoring software for communication networks *

Open Systems International Automatic Systems International, Inc. (ASI), or Open Systems International (OSI) is an automation software company headquartered in Medina, Minnesota, with international offices in Canada, Colombia, Spain, India, Dubai, Australia, Singapore, and ...

, an automation software vendor for the electric, petroleum, transportation and water industries *

Officine Stampaggi Industriali OSI, acronym for ''Officine Stampaggi Industriali'' (literally "Industrial Stampings Workshops") was a coachbuilding company founded in 1960 in Turin by former Carrozzeria Ghia, Ghia president Luigi Segre (1919–63) and Arrigo Olivetti (1889–1977 ...

, a defunct Italian coachbuilder *

Ohio Scientific Ohio Scientific, Inc. (OSI, originally Ohio Scientific Instruments, Inc.), was a privately owned American computer company based in Ohio that built and marketed computer systems, expansions, and software from 1975 to 1986. Their best-known produ ...

Inc. (also known as Ohio Scientific Instruments), a US microcomputer manufacturer 1975-1981

Government

Office of Scientific Intelligence Office of Scientific Intelligence (OSI) also known as Scientific Intelligence Division was a department of the Central Intelligence Agency. In 1963, it was incorporated into the Directorate of Science & Technology. Fictional uses of the name The ...

, former name of a department of the Central Intelligence Agency now called the Directorate of Science and Technology *

Office of Strategic Influence The Office of Strategic Influence, or OSI, was a department created by the United States Department of Defense on October 30, 2001, to support the War on Terrorism through psychological operations in targeted countries, which did not include the ...

, a former American government agency, part of the Department of Defense and focused on psychological warfare * Office of Special Investigations (disambiguation), a name shared by several government agencies ** U.S. Air Force Office of Special Investigations ** Office of Special Investigations (Government Accountability Office) **

Office of Special Investigations (United States Department of Justice) The Office of Special Investigations (OSI) of the U.S. Justice Department was created in 1979 to identify and expel, from the United States, those who assisted Nazis in persecuting "any person because of race, religion, national origin, or politic ...

* Office of Scientific Integrity, now

United States Office of Research Integrity The Office of Research Integrity (ORI) is a U.S. government agency that focuses on research integrity, especially in health. It was created when the Office of Scientific Integrity (OSI) in the National Institutes of Health (NIH) and the Office of ...

* Office of Special Investigation, a secret intelligence unit of

Republic of Korea Air Force The Republic of Korea Air Force (ROKAF; ), also known as the ROK Air Force or South Korean Air Force, is the Air force, aerial and Space force, space warfare service branch of South Korea, operating under the Ministry of National Defense (South K ...

* Office of the Special Investigator Australia

Technology

Open Systems Interconnection The Open Systems Interconnection (OSI) model is a reference model developed by the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems inter ...

, (ISO 7498) a joint ISO and ITU-T standard for computer networks and communication protocols **

OSI model The Open Systems Interconnection (OSI) model is a reference model developed by the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems inter ...

, a layered description for communications and computer network protocol design **

OSI protocols The Open Systems Interconnection protocols are a family of information exchange standards developed jointly by the International Organization for Standardization, ISO and the ITU-T. The standardization process began in 1977. While the seven-la ...

* Open switching interval, a type of disconnect supervision in telecommunication * On-Site Inspection, an advanced measure technique combining several methods, especially used in order to detect nuclear tests

Arts and entertainment

OSI (band) OSI was an American progressive rock band, originally formed by Fates Warning guitarist Jim Matheos in 2002. Chroma Key keyboardist and vocalist Kevin Moore is the only other full-time member of the band. The collaboration may be considered a st ...

, an American progressive rock supergroup named after the former Office of Strategic Influence government agency ** ''Office of Strategic Influence'' (album), the 2003 debut album by the band OSI *

Origin Systems Origin Systems, Inc. was an American video game developer based in Austin, Texas. It was founded on March 3, 1983, by Richard Garriott and his brother Robert. Origin is best known for their groundbreaking work in multiple genres of video games ...

, a former United States computer game developer *

Orchestra della Svizzera Italiana The Orchestra della Svizzera Italiana (OSI; literal translation, Orchestra of Italian Switzerland) is a Swiss orchestra based in Lugano. The orchestra's primary concert venue is the ''Auditorio RSI''. The OSI also gives a concert series at the Sa ...

, an orchestra in southern Switzerland in the city of Lugano which is in the canton of Ticino

Fiction

a fictional United States government agency in several television programs and movies; * Office of Secret Intelligence, a fictional United States government secret agency in the animated series ''The Venture Bros.''

People

Osi (ancient tribe) The Osi or Osii were an ancient tribe dwelling north of the Marcomanni and Quadi, in a woody and mountainous country. Their national customs, as well as their language, were those of the Aravisci, who Tacitus called Pannonians. They were tributa ...

, an ancient tribe in Europe *

Alans The Alans () were an ancient and medieval Iranian peoples, Iranic Eurasian nomads, nomadic pastoral people who migrated to what is today North Caucasus – while some continued on to Europe and later North Africa. They are generally regarded ...

(ancient term Osi), an ancient tribe in the Caucasus *

Osi Umenyiora Ositadimma "Osi" Umenyiora (born November 16, 1981) is a British-Nigerian former professional American football player who was a defensive end in the National Football League (NFL). He played college football for the Troy Trojans and was select ...

(born 1981), former American football player * Osi Rhys Osmond (1942–2015), Welsh painter * Jean-Paul Appel, also known as Osi, leader of the UFO religion

Siderella Siderella, originally Iso-Zen, also known as Galacteus among many other names, was a French UFO religion. It was founded and led by Jean-Paul Appel, who founded the group in 1966 in Paris, France. The views of the group involved ufological and ...

Other uses

Order of the Star of Italy The Order of the Star of Italy ( ) is an Italian order of chivalry that was founded in 2011. The order was reformed from the 1947 Order of the Star of Italian Solidarity by the 11th President of Italy, Giorgio Napolitano. The emphasis of the ...

, an order of chivalry * Official sector involvement, in sovereign debt restructuring deals, as opposed to private sector involvement * Options Symbology Initiative, a plan to change the way that exchange-traded options are named in

option symbol In finance, an option symbol is a code by which options are identified on an options exchange or a futures exchange A futures exchange or futures market is a central financial exchange where people can trade standardized futures contracts define ...

* Out-of-Station Interchange, a pedestrian change between two

London Underground The London Underground (also known simply as the Underground or as the Tube) is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England. The Undergro ...

stations that allows continuity as part of one chargeable journey