OSI may refer to:

Places

Osijek Airport Osijek Airport ( hr, Zračna luka Osijek; ) is the international airport of Osijek, Croatia. It is located 20 km east southeast of Osijek and is situated near the Osijek – Vukovar regional road, southwest of the eponymous village of Klisa ...

(IATA code: OSI), an airport in Croatia * Ősi, a village in Veszprém county, Hungary * Oši, an archaeological site in

Semigallia Semigallia, also spelt Semigalia, ( lv, Zemgale; german: Semgallen; lt, Žiemgala; pl, Semigalia; liv, Zemgāl) is one of the Historical Latvian Lands located in the south of the Daugava river and the north of the Saule region of Samogitia. ...

, 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 district A district is a type of administrative division that, in some countries, is managed by t ...

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

Organizations

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

Open Source Initiative The Open Source Initiative (OSI) is the steward of the Open Source Definition, the set of rules that define open source software. It is a California public-benefit nonprofit corporation, with 501(c)(3) tax-exempt status. The organization w ...

, an organization dedicated to promoting open source software *

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

, a private charitable foundation established by George Soros to promote open societies around the world *

Open Society Institute-Baltimore Open Society Institute-Baltimore is the only US field office of Open Society Foundations. It was founded in 1998. ThstaffanAdvisory Boardare based in Baltimore and all of its activities are focused locally. OSI-Baltimore has three program areas: ...

, a locally based foundation that is part of Open Society Foundations *

Open Space Institute Open Space Institute (OSI) (not to be confused with the facilitator network of open conversation space) is a conservation organization that seeks to preserve scenic, natural and historic landscapes for public enjoyment, conserve habitats while s ...

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

Ordnance Survey Ireland Ordnance Survey Ireland (OSI; ga, Suirbhéireacht Ordanáis Éireann) is the national mapping agency of Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean ...

(''Suirbhéireacht Ordanáis Éireann'') * Otto-Suhr-Institut, the political-science institute of the Free University of Berlin

Companies

* OSI Group, 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 on 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, the restaurant and entertainment group that includes Outback Steakhouse * OSI Systems, a company that manufactures security scanners and medical equipment based in California * OSIsoft, a privately held company that develops device connectivity software * Objective Systems Integrators, a company that provides monitoring software for communication networks *

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

, 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 Ghia president Luigi Segre (1919–63) and Arrigo Olivetti (1889–1977) from the Ferga ...

, a defunct Italian coachbuilder *

Ohio Scientific Ohio Scientific Inc. (also known as Ohio Scientific Instruments) was an Ohio-based computer company that built and marketed microcomputers from 1975 to 1981. Their best-known products were the Challenger series of microcomputers and Superboard sin ...

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

'', Italian coachbuilder

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.http://www.gwu.edu/~nsarchiv/NSA ...

, former name of a department of the Central Intelligence Agency now called the Directorate of Science and Technology * Office of Strategic Influence, 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 The Department of the Air Force Office of Special Investigations (OSI) is a U.S. federal law enforcement agency that reports directly to the Secretary of the Air Force. OSI is also a U.S. Air Force field operating agency under the administrati ...

** 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 political ...

* 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; ko, 대한민국 공군; RR: ''Daehanminguk Gong-gun''), also known as the ROK Air Force or South Korean Air Force, is the aerial warfare service branch of South Korea, operating under the Ministry of N ...

Technology

Open Systems Interconnection The Open Systems Interconnection model (OSI model) is a conceptual model that 'provides a common basis for the coordination of SOstandards development for the purpose of systems interconnection'. In the OSI reference model, the communications ...

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

OSI model The Open Systems Interconnection model (OSI model) is a conceptual model that 'provides a common basis for the coordination of SOstandards development for the purpose of systems interconnection'. In the OSI reference model, the communications ...

, 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 ISO and the ITU-T. The standardization process began in 1977. While the seven-layer OSI model is often used as a reference for tea ...

Open switching interval In telecommunication, supervision is the monitoring of a telecommunication circuit for telephony to convey to an operator, user, or a switching system, information about the operational state of the circuit. The typical operational states of trunks ...

, 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 is 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 ...

, 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 beyond the Quadi, in a woody and mountainous country. But their national customs, as well as their language, were those of the Aravisci, who Tacitus called Pannonians. They were, moreover, tributary ...

, an ancient tribe in Europe *

Alans The Alans (Latin: ''Alani'') were an ancient and medieval Iranian nomadic pastoral people of the North Caucasus – generally regarded as part of the Sarmatians, and possibly related to the Massagetae. Modern historians have connected the ...

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

Osi Umenyiora Ositadimma "Osi" Umenyiora (born November 16, 1981) is a former American football defensive end. He played college football for Troy University and was drafted by the New York Giants in the second round of the 2003 NFL Draft. Umenyiora was a t ...

(born 1981), former American football player *

Osi Rhys Osmond Osi Rhys Osmond (born Donald Malcolm Osmond; 28 June 1942 – 6 March 2015) was a Welsh painter and an occasional television and radio presenter. Biography Osmond was born in Bristol to Welsh parents from Wattsville, Sirhowy, Caerphilly, where ...

(1942–2015), Welsh painter

Other uses

* 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 An option symbol is a code by which options Option or Options may refer to: Computing *Option key, a key on Apple computer keyboards *Option type, a polymorphic data type in programming languages * Command-line option, an optional parameter to ...

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

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

stations that allows continuity as part of one chargeable journey