OCI
# 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
