OSI
OSI stands for:
- United States Air Force Office of Special Investigations , a federal agency of the United States Air Force
- Office of Special Investigations , a US judicial agency used to prosecute Nazi war criminals
- Office of Strategic Influence , an American military establishment
- Officine Stampaggi Industriali , a former Italian automobile and body manufacturer
- Open Society Institute , a foundation
- Open Source Initiative , an organization promoting open source software
- Orchestra della Svizzera italiana , a Ticino symphony orchestra based in Lugano
- Ordnance Survey Ireland , National Land Surveyor of the Republic of Ireland
- Origin Systems , an American computer game manufacturer
- OSI Group , a network of companies and production sites in the food industry
- OSI (band) , a progressive rock band
- Osijek Airport has the IATA code of an airport in Croatia
- Otto Suhr Institute , Institute for Political Science at the Free University of Berlin
- OSI model , Open Systems Interconnection Model, ISO OSI 7-layer model for network protocols
- Open sports tournament for Icelandic horses
- OSI-Ford 20 M TS , a car model that was created in cooperation between Ford and Officine Stampaggi Industriali
Osi stands for:
- the Latin name of an Illyrian tribe, see Oser (tribe)
osi stands for:
- Osing (language) (ISO-639-3 code), language of the Osing (ethnic group) , dialect of the Javanese language
