OCI

OCI may refer to:

Businesses and organizations

• OCI (company), green energy and chemical company, South Korea
• Oakwood Collegiate Institute, Toronto, Canada
• Office of Criminal Investigations of the U.S. Food and Drug Administration
• Olympic Council of Ireland, former name the national olympic committee of Ireland
• Ontario Cancer Institute, Canada
• Order of the Crown of Italy, Italian order
• Open Constitution Initiative, advocacy group in China
• OCI NV, parent company of Orascom Construction
• Ottawa Collegiate Institute, now Lisgar Collegiate Institute, Canada
• Organisation Communiste Internationaliste, (Internationalist Communist Organisation), former French political party

Computing

• Open Catalog Interface, an interface standard in computing
• Open Container Initiative, a Linux standards project in computing
• Oracle Call Interface, database interface software

Other uses

• oci, ISO 639-2/3 language code for Occitan language
• Organizational conflict of interest
• Other comprehensive income
• Overseas Citizen of India, a scheme granting a status similar to, but not the same as, dual citizenship in India