# OC

Oc, OC or O.C. may refer to:

## Arts and entertainment

* The O.C., an American television show set in Orange County, California
* The O.C. (professional wrestling), a professional wrestling stable in WWE
* Original character, a type of character used in fandoms

## Brands, businesses, and organizations

* OC Transpo, a public transit company in Ottawa and Carleton in Ontario, Canada
* Organisation Consul, a former terrorist organization active in Germany from 1920 to 1922
* Oregon Crusaders Drum and Bugle Corps, a Drum Corps International group commonly abbreviated as "OC"
* Ornithological Council
* Owens Corning, NYSE ticker symbol
* Oxi Clean, a cleaning product
* Orbis Communications, a former television distribution company
* PGA Express (IATA code "OC" 2001–2015)
* Air California (IATA Code "OC" 1967–1987)

## Education

* Oaklands College, a further education in central Hertfordshire, UK
* Oakwood College, a college in northern Alabama, USA, affiliated with the Seventh-day Adventist Church
* Oberlin College, a liberal arts college in Ohio
* Oklahoma Christian University
* Old Carthusian, one who attended Charterhouse School
* Old Colchestrian, one who attended Colchester Royal Grammar School
* Old Chigwellian, one who attended Chigwell School
* Orewa College, a college in the North Island, New Zealand

## Places
### United States

* Oak Cliff, a community in Dallas, Texas
* Oakland–Alameda County Coliseum, a stadium in Oakland, California and the home of the Oakland Raiders
* Oakland County, Michigan
* Ocean City, Maryland, a prominent beach resort town in the mid-Atlantic region
* Ocean City, New Jersey, a family-oriented seaside resort town near Atlantic City
* Oceanside, California, a beachside city located within San Diego County
* Oklahoma City, Oklahoma, the capital of the U.S. state of Oklahoma
* Osceola, Indiana
* Oregon City, Oregon, the county seat of Clackamas County, Oregon

#### Counties

* Ocean County, New Jersey
* Oconee County, Georgia
* Oconee County, South Carolina
* Orange County, California, the 3rd most populous county in the U.S. state of California, housing Los Angeles metropolitan area
* Orange County, Florida, a county in the U.S. state of Florida, home to Orlando, Florida
* Orange County, Indiana
* Orange County, New York
* Orange County, North Carolina
* Orange County, Texas, county seat of Orange, Texas
* Orange County, Vermont
* Orange County, Virginia

### Elsewhere

* Ottawa—Carleton (federal electoral district), a federal electoral district in Ontario, Canada
* Old Colwyn, Wales

## Roles and titles

* Officer of the Order of Canada, post-nominal letters for a grade within the Canadian order
* Offensive coordinator, a coaching position in American and Canadian football
* Officer candidate
* Officer commanding, in military use

## Technology

* Oleoresin capsaicin or oleoresin capsicum, the active ingredient in pepper spray and OC gas
** OC spray, also known as pepper spray
* Open collector, electrical interface. Used in data communication
* openCanvas, a raster graphics software
* Optical Carrier levels in the SONET fiber-optic network specification
* Oral contraceptive, usually referring to the combined oral contraceptive pill
* Organ-on-a-chip, microfluidic device that simulates whole physiological and mechanical organ responses
* Overclocking, the process of forcing a computer component to run at a higher clock rate than it was designed for
* Overcurrent, an excessive value of electric current

## Languages

* Occitan language (ISO 639 alpha-2 oc)
* Old Chinese, the earliest attested stage of the Chinese language

## Other uses

* o.c. or op. cit., opere citato
* O.C. (rapper) (born 1971), American rapper
* Offering circular, in finance, for a bond offering
* Order of Carmelites, a Roman Catholic order
* Organized crime, in law
* On-center, in construction, indicating that the distance quoted is between the centers of neighboring wall studs, joists, or other members
* Original content, original character, or original contribution, used to assert one's authorship of a given subject matter
* Outrigger canoe
* Other Caste or Open Category, a caste designation used in governmental forms in India, usually referring to Forward Castes