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

Arts and entertainment

  • The O.C., an American television show set in Orange County, California
  • Opus clavicembalisticum, a piece for piano by Kaikhosru Shapurji Sorabji

    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
  • PGA Express (IATA code "OC" 2001–2015)
  • Air California (IATA Code "OC" 1967–1987)


  • 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


  • 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
  • Ocean City, New Jersey
  • Ocean County, New Jersey
  • Oceanside, California
  • Oconee County, Georgia
  • Oconee County, South Carolina
  • Oklahoma City, Oklahoma
  • Old Colwyn, Wales
  • Osceola, Indiana
  • Orange County, California
  • Orange County, Florida
  • Orange County, Indiana
  • Orange County, New York
  • Orange County, North Carolina
  • Orange County, Texas
  • Orange County, Vermont
  • Orange County, Virginia
  • Oregon City, Oregon
  • Ottawa—Carleton, a federal electoral district in Ontario, Canada

    Roles and titles

  • Offensive coordinator, a coaching position in American and Canadian football
  • Officer candidate
  • Officer in charge (police)
  • Officer commanding, in military use


  • 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

    Other uses

  • O.C. (rapper) (born 1971), American rapper
  • The O.C. (professional wrestling), professional wrestling stable
  • Occitan language (ISO 639 alpha-2 oc)
  • Offering circular, in finance, for a bond offering
  • Order of Canada, the highest award given in Canada
  • 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